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  • Proper use of disk to disk to tape backup using de-duplication and LTO5

    - by Michael
    I currently have ~12TB of data for a full disk to tape (LTO3) backup. Needless to say, it's now requiring over 16 tapes so I'm looking at other solutions. Here is what I've come up with. I'd like to hear the community's thoughts. Server for Disk-to-Disk BackupExec 2010 Using De-duplication Technology 20+TB worth of SATA drives LTO5 robotic library connected via SAS 1Gbps NIC connected to network What I envision is doing a full backup of my entire network which will initially take a long time over the 1Gbps NIC but once the de-duplication kicks in backups should be quick. I will then use the LTO5 to make disk to tape backups and archive those accordingly. What does everyone think? Any faster way of doing the initial full backup over the 1Gbps NIC? What will be my pain points? Is there a better way of doing what I'm trying to achieve?

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  • Dual boot - disk partition issues basic vs dynamic disk

    - by dboyd68
    I have a lenovo X1 that I am looking to dual boot windows and ubuntu on. I am having an issue. The disk came with 4 partitions SYSTEM_DRV, Windows C:, Lenovov Recovery, Hibernate Partition I have a SSD (250 gb) I have shrunk Windows C: so that I have 100gb of unallocated space. My plan was to install ubuntu on that. But when I try to create a new partition to install ubuntu on. Windows is saying I have to convert to a dynamic disk. I don't really understand the difference between Dyanimc and Basic disk but a quick search I am assuming I dont want to do this as I boot from this disk? Any suggestions on what I can do to dual boot? Thanks

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  • Connect a 2.5" (laptop hard disk) SATA hard disk to Desktop PC

    - by Lawliet
    Can I connect a laptop SATA hard disk to Desktop PC? Do I have to use some adapters or I can just plug in SATA power connector and SATA data cable like my Desktop hard disk is connected? I noticed that both laptop and desktop SATA disks use same connectors, but I'm afraid that I might fry my laptop hard disk because the SATA connector has both 12V and 5V voltage (given the fact that laptop hard disks has input voltage of 5V) I bought a all-in-one Modex-to-SATA power adapter and SATA cable and I still don't know what to do. I have read various forums and a lot of people are stating that it's perfectly ok, but some are scaring me that by connecting it so, it fried their hard disk. And some also mentioned cutting the yellow 12V wire if I'm planning to use Modex-to-SATA power. Thanks in advance

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  • Connect a 2.5" (laptop hard disk) SATA hard disk to Desktop PC

    - by Lawliet
    Can I connect a laptop SATA hard disk to Desktop PC? Do I have to use some adapters or I can just plug in SATA power connector and SATA data cable like my Desktop hard disk is connected? I noticed that both laptop and desktop SATA disks use same connectors, but I'm afraid that I might fry my laptop hard disk because the SATA connector has both 12V and 5V voltage (given the fact that laptop hard disks has input voltage of 5V) I bought a all-in-one Modex-to-SATA power adapter and SATA cable and I still don't know what to do. I have read various forums and a lot of people are stating that it's perfectly ok, but some are scaring me that by connecting it so, it fried their hard disk. And some also mentioned cutting the yellow 12V wire if I'm planning to use Modex-to-SATA power. Thanks in advance

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  • Virtualbox - differencing disk based on different differencing disk

    - by Klinki
    I'm trying to create differencing image based on differencing image in VirtualBox 4.2.18. Official documentation says it should be possible: http://www.virtualbox.org/manual/ch05.html#diffimages Basically I want to achieve this drive hierarchy: + immutable image with Debian and all software installed +---- differencing image with specific configuration, autoreset=off, readonly +-------- differencing image with autoreset=on +---- another differencing image for different virtual machine +-------- differencing image with autoreset=on I successfully created differencing image based on differencing image, but I'm not able to connect it to virtual machine :( It always shows error: Failed to open the hard disk .... cannot register hard disk ... because hard disk with UUID ... already exists Here is screenshot of Virtual Media Manager and error dialog Virtual Media Manager Window screenshot Very strange is that the new differencing image (tempdrive.vdi) doesn't have Actual Size 0. I wasn't able to connect it, but still, it has 36KB of data on it... This is very similar to this older question: How to create a chained differencing disk of another differencing disk in Virtual Box? but suggested solution is not working anymore in VirtualBox 4.2.18, so I posted it as a new question. (Limit for posting links and screenshots is quite annoying..)

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  • External Hard Disk's secter could not be read ?

    - by mgpyone
    I've an 500 GB Seagate External Hard Disk (NTFS) . Currently, I can't open it at Windows. Thus, I've tired with chkdsk command .. but still it stopped and can't continue checking disk.. Also I've tired with fsck on Mac . Then, it shows me the Error .. /Volumes/<HD Name>/ is not a character device CONTINUE? yes /Volumes/<HD Name>/ (NO WRITE) CANNOT READ: BLK 16 CONTINUE? yes THE FOLLOWING DISK SECTORS COULD NOT BE READ: 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, ioctl (GCINFO): Inappropriate ioctl for device fsck: /Volumes/<HD Name>/: can't read disk label The volume I've used is around 300 GB , Thus, it's hard to back up and format again . Thus, any helpful suggestions and solutions will be appreciated pretty well.

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  • Update fails to Install

    - by FirmTech
    I get the below error when I try to install updates using Software Updater: Not enough free disk space The upgrade needs a total of 81.3 M free space on disk '/boot'. Please free at least an additional 15.9 M of disk space on '/boot'. Empty your trash and remove temporary packages of former installations using 'sudo apt-get clean'. What should I do? firmtechnologies@FirmTechnologies:~$ (ls -l /boot) total 155801 -rw-r--r-- 1 root root 1158016 May 3 01:30 abi-3.13.0-24-generic -rw-r--r-- 1 root root 1161713 May 8 01:31 abi-3.13.0-26-generic -rw-r--r-- 1 root root 1161713 May 15 20:07 abi-3.13.0-27-generic -rw-r--r-- 1 root root 1161764 Jun 4 22:57 abi-3.13.0-29-generic -rw-r--r-- 1 root root 165510 May 3 01:30 config-3.13.0-24-generic -rw-r--r-- 1 root root 165538 May 8 01:31 config-3.13.0-26-generic -rw-r--r-- 1 root root 165521 May 15 20:07 config-3.13.0-27-generic -rw-r--r-- 1 root root 165544 Jun 4 22:57 config-3.13.0-29-generic drwxr-xr-x 5 root root 1024 Jun 6 14:31 grub -rw-r--r-- 1 root root 29091568 May 7 21:31 initrd.img-3.13.0-24-generic -rw-r--r-- 1 root root 29094684 May 12 12:24 initrd.img-3.13.0-26-generic -rw-r--r-- 1 root root 29095678 May 18 10:57 initrd.img-3.13.0-27-generic -rw-r--r-- 1 root root 29093700 Jun 6 14:32 initrd.img-3.13.0-29-generic drwx------ 2 root root 12288 Apr 30 17:11 lost+found -rw-r--r-- 1 root root 176500 Mar 12 13:31 memtest86+.bin -rw-r--r-- 1 root root 178176 Mar 12 13:31 memtest86+.elf -rw-r--r-- 1 root root 178680 Mar 12 13:31 memtest86+_multiboot.bin -rw------- 1 root root 3372643 May 3 01:30 System.map-3.13.0-24-generic -rw------- 1 root root 3377429 May 8 01:31 System.map-3.13.0-26-generic -rw------- 1 root root 3377429 May 15 20:07 System.map-3.13.0-27-generic -rw------- 1 root root 3378267 Jun 4 22:57 System.map-3.13.0-29-generic -rw------- 1 root root 5776416 May 3 01:30 vmlinuz-3.13.0-24-generic -rw------- 1 root root 5790912 May 8 01:30 vmlinuz-3.13.0-26-generic -rw------- 1 root root 5790912 May 15 20:07 vmlinuz-3.13.0-27-generic -rw------- 1 root root 5792544 Jun 4 22:57 vmlinuz-3.13.0-29-generic

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  • Recover data from Dynamic Disk (MBR) bigger than 2TB

    - by Helder
    Here is the situation: Promise Array FastTrak TX4310 with 3 disks (750 GB each) in RAID5. This comes to around 1500 GB of data. Last week I had the idea of expanding the RAID with an additional 750 GB disk. This would bring the volume to around 2250 GB. I plugged the disk and used the Webpam software to do the RAID expansion. However, I didn't count with the MBR 2TB limit, as I didn't remembered that the disk was using MBR instead of GPT and I didn't check it prior to the expansion. After a couple of days of expansion, today when I got home, the disk in Windows disk manager showed the message "Invalid disk" and when I try to activate it, it says "The operation is not allowed on the Invalid pack". From what I figured, the logical volume on the RAID expanded, and passed that info to the Windows layer and I ended up with an "larger than 2TB" MBR disk. I'm hopping that somehow I can still recover some data from this, and I was wondering if I can "rewrite" the MBR structure back to the 1500 GB partition size, so I can access the partition in Windows. Right now I'm doing an "Analyse" with TestDisk, as I hope the program will pickup the old 1500 structure and allow me to somehow revert back to it. I think that even though the Logical Drive in the RAID is bigger than the 2TB, I can somehow correct the MBR to show the 1500 GB partition again. I had a similar problem once, and I was able to recover the data using a similar method. What do you guys think? Is it a dead end? Am I totally screwed because there is the extra RAID layer that I'm not counting? Or is there other way to move with this? Thanks all!

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  • The 35 Best Tips and Tricks for Maintaining Your Windows PC

    - by Lori Kaufman
    When working (or playing) on your computer, you probably don’t think much about how you are going to clean up your files, backup your data, keep your system virus free, etc. However, these are tasks that need attention. We’ve published useful article about different aspects of maintaining your computer. Below is a list our most useful articles about maintaining your computer, operating system, software, and data. HTG Explains: Learn How Websites Are Tracking You Online Here’s How to Download Windows 8 Release Preview Right Now HTG Explains: Why Linux Doesn’t Need Defragmenting

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  • Out of disk space - /boot at 100%

    - by uvasal
    My /boot is at 100%. When I run aptitude search ~ilinux-image I'm getting loads of unused images. When I try to delete one of them (after checking which one is currently in use by doing uname -r), e.g apt-get autoremove linux-image-3.2.0-44-generic I get: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these: The following packages have unmet dependencies: linux-generic : Depends: linux-headers-generic (= 3.2.0.51.61) but 3.2.0.54.64 is to be installed linux-server : Depends: linux-headers-server (= 3.2.0.51.61) but 3.2.0.54.64 is to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution). And running apt-get -f install throws No space left on device. I've also tried doing apt-get purge but I am getting the same thing. Output of df -h and dpkg -l linux-*.: root@hb2088:/srv/www# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 9.4G 3.0G 6.0G 34% / udev 301M 4.0K 301M 1% /dev tmpfs 124M 228K 124M 1% /run none 5.0M 0 5.0M 0% /run/lock none 309M 0 309M 0% /run/shm /dev/sda1 92M 91M 0 100% /boot root@hb2088:/srv/www# dpkg -l linux-* Desired=Unknown/Install/Remove/Purge/Hold | Status=Not/Inst/Conf-files/Unpacked/halF-conf/Half-inst/trig-aWait/Trig-pend |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad) ||/ Name Version Description +++-====================================================-====================================================-======================================================================================================================== un linux-doc-3.2.0 <none> (no description available) ii linux-firmware 1.79.6 Firmware for Linux kernel drivers iU linux-generic 3.2.0.51.61 Complete Generic Linux kernel un linux-headers <none> (no description available) un linux-headers-3 <none> (no description available) un linux-headers-3.0 <none> (no description available) ii linux-headers-3.2.0-44 3.2.0-44.69 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-44-generic 3.2.0-44.69 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-45 3.2.0-45.70 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-45-generic 3.2.0-45.70 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-48 3.2.0-48.74 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-48-generic 3.2.0-48.74 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-51 3.2.0-51.77 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-51-generic 3.2.0-51.77 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP ii linux-headers-3.2.0-52 3.2.0-52.78 Header files related to Linux kernel version 3.2.0 ii linux-headers-3.2.0-52-generic 3.2.0-52.78 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP iU linux-headers-3.2.0-54 3.2.0-54.82 Header files related to Linux kernel version 3.2.0 iU linux-headers-3.2.0-54-generic 3.2.0-54.82 Linux kernel headers for version 3.2.0 on 64 bit x86 SMP iU linux-headers-generic 3.2.0.54.64 Generic Linux kernel headers iU linux-headers-server 3.2.0.54.64 Linux kernel headers on Server Equipment. un linux-image <none> (no description available) un linux-image-3.0 <none> (no description available) ii linux-image-3.2.0-44-generic 3.2.0-44.69 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-45-generic 3.2.0-45.70 Linux kernel image for version 3.2.0 on 64 bit x86 SMP ii linux-image-3.2.0-48-generic 3.2.0-48.74 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-51-generic 3.2.0-51.77 Linux kernel image for version 3.2.0 on 64 bit x86 SMP iF linux-image-3.2.0-52-generic 3.2.0-52.78 Linux kernel image for version 3.2.0 on 64 bit x86 SMP in linux-image-3.2.0-54-generic <none> (no description available) iU linux-image-generic 3.2.0.51.61 Generic Linux kernel image iU linux-image-server 3.2.0.51.61 Linux kernel image on Server Equipment. un linux-initramfs-tool <none> (no description available) un linux-kernel-headers <none> (no description available) un linux-kernel-log-daemon <none> (no description available) ii linux-libc-dev 3.2.0-52.78 Linux Kernel Headers for development un linux-restricted-common <none> (no description available) iU linux-server 3.2.0.51.61 Complete Linux kernel on Server Equipment. un linux-source-3.2.0 <none> (no description available) un linux-tools <none> (no description available) Output of du -sh /boot/*: root@hb2088:~# du -sh /boot/* 781K /boot/abi-3.2.0-44-generic 781K /boot/abi-3.2.0-45-generic 781K /boot/abi-3.2.0-48-generic 781K /boot/abi-3.2.0-51-generic 781K /boot/abi-3.2.0-52-generic 139K /boot/config-3.2.0-44-generic 139K /boot/config-3.2.0-45-generic 139K /boot/config-3.2.0-48-generic 139K /boot/config-3.2.0-51-generic 139K /boot/config-3.2.0-52-generic 1.6M /boot/grub 14M /boot/initrd.img-3.2.0-44-generic 14M /boot/initrd.img-3.2.0-45-generic 14M /boot/initrd.img-3.2.0-48-generic 12K /boot/lost+found 174K /boot/memtest86+.bin 176K /boot/memtest86+_multiboot.bin 2.8M /boot/System.map-3.2.0-44-generic 2.8M /boot/System.map-3.2.0-45-generic 2.8M /boot/System.map-3.2.0-48-generic 2.8M /boot/System.map-3.2.0-51-generic 2.8M /boot/System.map-3.2.0-52-generic 4.8M /boot/vmlinuz-3.2.0-44-generic 4.8M /boot/vmlinuz-3.2.0-45-generic 4.8M /boot/vmlinuz-3.2.0-48-generic 4.8M /boot/vmlinuz-3.2.0-51-generic 4.8M /boot/vmlinuz-3.2.0-52-generic

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  • Disk errors on tty and syslog/dmesg

    - by Shoaibi
    Recently I have started to get a lot of these errors: Jun 18 08:57:42 abacus kernel: [ 401.554292] ata5: SError: { HostInt 10B8B } Jun 18 08:57:42 abacus kernel: [ 401.559346] sr 4:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Jun 18 08:57:42 abacus kernel: [ 401.560191] ata5.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Jun 18 08:57:42 abacus kernel: [ 401.560231] res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) Jun 18 08:57:42 abacus kernel: [ 401.575310] ata5.00: status: { DRDY ERR } Jun 18 08:57:42 abacus kernel: [ 401.579801] ata5: hard resetting link Jun 18 08:57:42 abacus kernel: [ 401.929320] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 18 08:57:42 abacus kernel: [ 401.941936] ata5.00: configured for UDMA/100 Jun 18 08:57:42 abacus kernel: [ 401.969426] ata5: EH complete Jun 18 08:57:54 abacus kernel: [ 413.527699] ata5.00: exception Emask 0x40 SAct 0x0 SErr 0x80800 action 0x6 Jun 18 08:57:54 abacus kernel: [ 413.527779] ata5.00: irq_stat 0x40000001 Jun 18 08:57:54 abacus kernel: [ 413.527822] ata5: SError: { HostInt 10B8B } Jun 18 08:57:54 abacus kernel: [ 413.527901] sr 4:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Jun 18 08:57:54 abacus kernel: [ 413.528103] ata5.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Jun 18 08:57:54 abacus kernel: [ 413.528142] res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) Jun 18 08:57:54 abacus kernel: [ 413.528184] ata5.00: status: { DRDY ERR } Jun 18 08:57:54 abacus kernel: [ 413.528303] ata5: hard resetting link Jun 18 08:57:54 abacus kernel: [ 413.875894] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 18 08:57:54 abacus kernel: [ 413.888267] ata5.00: configured for UDMA/100 Jun 18 08:57:54 abacus kernel: [ 413.916365] ata5: EH complete Jun 18 08:57:56 abacus kernel: [ 415.537834] ata5.00: exception Emask 0x40 SAct 0x0 SErr 0x80800 action 0x6 Jun 18 08:57:56 abacus kernel: [ 415.545253] ata5.00: irq_stat 0x40000001 Jun 18 08:57:56 abacus kernel: [ 415.549788] ata5: SError: { HostInt 10B8B } Jun 18 08:57:56 abacus kernel: [ 415.554840] sr 4:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Jun 18 08:57:56 abacus kernel: [ 415.555201] ata5.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Jun 18 08:57:56 abacus kernel: [ 415.555242] res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) Jun 18 08:57:56 abacus kernel: [ 415.570483] ata5.00: status: { DRDY ERR } Jun 18 08:57:56 abacus kernel: [ 415.574695] ata5: hard resetting link Jun 18 08:57:56 abacus kernel: [ 415.924954] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 18 08:57:56 abacus kernel: [ 415.936831] ata5.00: configured for UDMA/100 Jun 18 08:57:56 abacus kernel: [ 415.965001] ata5: EH complete Jun 18 08:58:02 abacus kernel: [ 421.529784] ata5.00: exception Emask 0x40 SAct 0x0 SErr 0x80800 action 0x6 Jun 18 08:58:02 abacus kernel: [ 421.529904] ata5.00: irq_stat 0x40000001 Jun 18 08:58:02 abacus kernel: [ 421.530023] ata5: SError: { HostInt 10B8B } Jun 18 08:58:02 abacus kernel: [ 421.530104] sr 4:0:0:0: CDB: Test Unit Ready: 00 00 00 00 00 00 Jun 18 08:58:02 abacus kernel: [ 421.530425] ata5.00: cmd a0/00:00:00:00:00/00:00:00:00:00/a0 tag 0 Jun 18 08:58:02 abacus kernel: [ 421.530466] res 51/20:03:00:00:00/00:00:00:00:00/a0 Emask 0x40 (internal error) Jun 18 08:58:02 abacus kernel: [ 421.530583] ata5.00: status: { DRDY ERR } Jun 18 08:58:02 abacus kernel: [ 421.530705] ata5: hard resetting link Jun 18 08:58:02 abacus kernel: [ 421.873218] ata5: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jun 18 08:58:02 abacus kernel: [ 421.885040] ata5.00: configured for UDMA/100 Jun 18 08:58:02 abacus kernel: [ 421.913404] ata5: EH complete Are these critical error messages? What would be the cause and remedy?

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  • unable to mount internal disk mount exited with exit code 13

    - by Masri
    My Ubuntu get into error when I try to mount one of my internal disks and it gives this error message: Error mounting: mount exited with exit code 13: $MFTMirr does not match $MFT (record 3). Failed to mount '/dev/sda7': Input/output error NTFS is either inconsistent, or there is a hardware fault, or it's a SoftRAID/FakeRAID hardware. In the first case run chkdsk /f on Windows then reboot into Windows twice. The usage of the /f parameter is very important! If the device is a SoftRAID/FakeRAID then first activate it and mount a different device under the /dev/mapper/ directory, (e.g. /dev/mapper/nvidia_eahaabcc1). Please see the 'dmraid' documentation for more details. pls advise how to solve above error ,Many thanks to you in advance.

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  • disk not accessible

    - by user107044
    i formatted my hard drive yesterday and it was working well even after the formatting. But when I restarted my system again , is is showing that the space is alloted to my files but they are inaccessible. I have even tried to unhide the files and folders, if they got hidden somehow. But nothing works. the hard drive is being shown empty but the properties are saying that it still conatins the data : http://imgur.com/ObjTE in the image, it is showing that the directory has only 1 file of size:4.8 kbps but the space being used by the drive is 11.6 GB. do suggest some solution.

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  • Disk drive won't let go of password prompt at bootup?

    - by user54003
    I had a hacker intrude into my system, at the time it was obvious, so I reinstalled. However, I am left with what appears to be a fatal problem as far as one of my disk drives goes. When I install that drive in my system, a prompt comes up for the disk password, and what it is asking for is a root password. The disk works otherwise normally but despite all my efforts, I have not been able to fix this disk. I have gotten the operating system parted magic and done the most extreme clean up available, the internal one which sends a signal to the disk electronics which runs a built in clean up program. Darik's boot and nuke, I've tried them all but I can't seem to remove this with anything in the Linux line. Does anyone have any suggestions? I've run gparted, created a Sun, an Apple and various other schemes to partition the disk, all to no avail. Can anyone help?

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  • Win 8: Adding a boot volume to an MBR dynamic disk [NOT about changing to basic disks]

    - by Stilez
    (This is NOT aiming to convert to basic disk. In this question, the disk stays dynamic but becomes bootable) There doesn't seem to be a clear, well stated answer I can find, for the question "What are the criteria for Windows 8 to successfully boot from an MBR dynamic disk", or "how do I fix a dynamic MBR partition that's failing boot"? I've tried to educate myself but can't find crucial information to clear it all up. My existing HDD/SSD setup: DISK 0 ~ 60GB SSD/MBR/basic: (350MB recovery)(60GB windows 8 bootable) DISK 1 ~ 512GB SSD/MBR/dynamic: (350MB recovery)(60GB unallocated)(410GB mirrored data) DISK 2 ~ 512GB SSD/MBR/dynamic: (350MB recovery)(60GB unallocated)(410GB mirrored data) DISKS 3, 4, 5: (ignored for simplicity: 2xHDD RAID1 + caching SSD) I'm heavy duty on data crunching and virtualisation, just maxxed out 32GB RAM @ 2133 and moved to 4960X + 64GB. Disk 0 is a pure system disk of little value, and virtualisations runs off mirrored SSDs (Samsung 840 Pro 512 x 2) for double speed reading and so they snapshot in reasonable time. I'm using 4 SATA3 ports and the board only has two decent Intel ports (onboard Marvell are poorer quality). I'm wary of choosing between LSI, HighPoint and other 3rd party controllers as I'm unfamiliar with the maze of decent RAID cards (that's a whole other issue!). I want to cut down my SSD needs by moving the boot volume and caching volume to the 840 pros, giving a setup with 2 fewer SSDs: DISK 0 ~ 512GB SSD/MBR/dynamic: (350MB recovery)(60GB boot)(410GB mirrored data) DISK 1 ~ 512GB SSD/MBR/dynamic: (350MB recovery)(30GB cache for the ICH10R mirror)(30GB temp)(410GB mirrored data) DISKS 2, 3: (2xHDD RAID1) Intel's RST allows this, Win 8 allows booting off a MBR/dynamic disk, and the two 60GB SSDs are hardly the fastest SSDs anyway, they'll get repurposed. Moving the caching volume is easy. Moving the boot volume has me stumped. The difficulty is, I'm hitting a wall of knowledge here. I have a UEFI Asus motherboard with an previous traditional MBR/basic boot disk, and I want it to boot from a disk and volume that's MBR/dynamic. The disk copy is physically ok (Partition Wizard Server will copy to dynamic volumes) but then hits a light blue 0xc000000e boot error. No real surprise, I expected to have some boot fixing, but had expected Windows to boot-fix it (all drivers exist), or the usual manual fixes to work. Specifically, I don't know enough, to know what's got to be manually checked and perhaps corrected for the disk to boot (legacy/uefi/bios, odd partitions, boot tables, disk IDs, hidden boot files, oh my!), or if I need to change any of this secure boot/UEFI/legacy stuff in the bios, convert a 512 SSD to basic and then back to dynamic when working, or if the issue is pure OS config using "diskpart", "bootsect" and "bootrec" from the Win8 DVD. The old system disk still boots but I don't know enough to figure what to fix, to make the system boot as I want. The answers probably aren't hard but the real issue is my confusion and missing information. Thanks for helping!

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  • Nautilus statusbar visibilty - Quickly check free space

    - by Jeremy
    In prior versions, I would open Nautilus and check the statusbar, which would tell me how much free space there is. Now, the statusbar isn't shown by default. I know you can enable it from the View menu, but 99% of users won't do that (and I'd rather not do that, if possible). So, is there some new recommended way to keep tabs on hard drive usage? Or is there maybe some other method that I should have been using in the past but never noticed?

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  • Cloning single disk drive to multiple drives simultaneously

    - by mr.b
    Hi, I am looking for a way to clone single disk drive to more than one disk drive at the same time. I have prepared system images on 1TB disks, and it takes almost 2 hours to clone one disk to another, and then it goes up exponentially, in order to have say 30 disks cloned. If it was possible to clone one disk to more than single target, it would simplify whole procedure a lot. Also, is there something that prevents this kind of operation? I mean, is there some special reason why every disk cloning software that I know about supports only single target drive? Thanks! P.S. This question is cross-post from superuser, I hope nobody minds.

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  • zeroing a disk with dd vs Disk Utility

    - by jdizzle
    I'm attempting to zero a disk on my Mac OS X machine. I'm going for complete zeros and unformatted, so I think of dd. Unfortunately the maximum throughput I've managed to get out of dd is 7MB/s. Just for grins I tried disk utility and it has a throughput of 19MB/s. What gives? I've tried changing the bs option on dd to all sorts of values, but it still hovers around 7MB/s. Why is disk utility so much faster?

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  • How to limit disk performance?

    - by DrakeES
    I am load-testing a web application and studying the impact of some config tweaks (related to disk i/o) on the overall app performance, i.e. the amount of users that can be handled simultaneously. But the problem is that I hit 100% CPU before I can see any effect of the disk-related config settings. I am therefore wondering if there is a way I could deliberately limit the disk performance so that it becomes the bottleneck and the tweaks I am trying to play with actually start impacting performance. Should I just make the hard disk busy with something else? What would serve the best for this purpose? More details (probably irrelevant, but anyway): PHP/Magento/Apache, studying the impact of apc.stat. Setting it to 0 makes APC not checking PHP scripts for modification which should increase performance where disk is the bottleneck. Using JMeter for benchmarking.

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  • Beginners advice on Small business network disk(s)

    - by Rob
    We are having 10 PCs used by various user and presently use one network disk (a LaCie NAS) for all our data. Everything is Windows Vista and our collective IT hardware knowledge is minimal. This worked well generally. However, recently the disk freqently loses connection from the network (2-3 times per week) and the only way back seems to be the "turn it off and back on" trick. This obviously cant be any good for the disk. I understand that there are various more sophisticated ways of storing data and was wondering what people would recommend. One of the worries is obviously disk failure (either in part or as a whole) and the lack of continued availability due to network issues. I would guess that a disk which replicates data wouldnt work as a sole solution due to the network connection, but dont know what hardware (and/or software) would/could work in our case. In terms of size, we are looking at very small amounts, ie. less than 500 GB in total.

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  • virtualbox 2 vmware disk

    - by anol
    I have a virtualbox disk I'd like to convert to a vmware disk. The disk is dynamic which makes it a lot more trickier. If I follow the instructions at http://xpapad.wordpress.com/2010/02/21/migrating-from-virtualbox-to-vmware-in-linux, the vdi-to-raw conversion will result in a 2 TB file. I don't even have that much disk space! The first step therefore seems to be a dynamic to static conversion of the virtualbox disk, right? How do I do that or is there perhaps a better way to convert to vmware? Help!

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  • centos 100% disk full - How to remove log files, history, etc?

    - by kopeklan
    mysqld won't start because disk space is full: 101221 14:06:50 [ERROR] /usr/libexec/mysqld: Error writing file '/var/run/mysqld/mysqld.pid' (Errcode: 28) 101221 14:06:50 [ERROR] Can't start server: can't create PID file: No space left on device running df -h: Filesystem Size Used Avail Use% Mounted on /dev/sda2 16G 3.2G 12G 23% / /dev/sda5 4.8G 4.6G 0 100% /var /dev/sda3 430G 855M 407G 1% /home /dev/sda1 76M 24M 49M 33% /boot tmpfs 956M 0 956M 0% /dev/shm du -sh * in /var: 12K account 56M cache 24K db 32K empty 8.0K games 1.5G lib 8.0K local 32K lock 221M log 16K lost+found 0 mail 24K named 8.0K nis 8.0K opt 8.0K preserve 8.0K racoon 292K run 70M spool 8.0K tmp 76K webmin 2.6G www 20K yp in /dev/sda5, there is website files in /var/www. because this is first time, I have no idea which files to remove other than moving /var/www to other partition And one more, what is the right way to remove log files, history, etc in /dev/sda5?

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  • Possible disk IO issue

    - by Tim Meers
    I've been trying to really figure out what my IOPS are on my DB server array and see if it's just too much. The array is four 72.6gb 15k rpm drives in RAID 5. To calculate IOPS for RAID 5 the following formula is used: (reads + (4 * Writes)) / Number of disks = total IOPS. The formula is from MSDN. I also want to calculate the Avg Queue Length but I'm not sure where they are getting the formula from, but i think it reads on that page as avg que length/number of disks = actual queue. To populate that formula I used the perfmon to gather the needed information. I came up with this, under normal production load: (873.982 + (4 * 28.999)) / 4 = 247.495. Also the disk queue lengh of 14.454/4 = 3.614. So to the question, am I wrong in thinking this array has a very high disk IO? Edit I got the chance to review it again this morning under normal/high load. This time with even bigger numbers and IOPS in excess of 600 for about 5 minutes then it died down again. But I also took a look at the Avg sec/Transfer, %Disk Time, and %Idle Time. These number were taken when the reads/writes per sec were only 332.997/17.999 respectively. %Disk Time: 219.436 %Idle Time: 0.300 Avg Disk Queue Length: 2.194 Avg Disk sec/Transfer: 0.006 Pages/sec: 2927.802 % Processor Time: 21.877 Edit (again) Looks like I have that issue solved. Thanks for the help. Also for a pretty slick parser I found this: http://pal.codeplex.com/ It works pretty well for breaking down the data into something usable.

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  • Disk (EXT4) suddenly empty without any sign of why

    - by Ohnomydisk
    I have a Ubuntu 10.04 server with several disks in it. The disks are setup with a union filesystem, which presents them all as one logical /home. A few days ago, one of the disks appears to have suddenly 'become empty', for lack of better explanation. The amount of data on the /home mount almost halved within minutes - the disk appears to have had just over 400 GB of data prior to 'becoming empty'. I have absolutely no idea what happened. I was not using the server at the other time, but there are half a dozen other users who may have been (without root access and without the ability to hose a whole disk). I've ran SMART tests on the disk and it comes back clean. The filesystem checks fine (it has 12 GB used now, as some user software continued downloading after the incident). All I know is that around around midnight on October 19, the disk usage changed dramatically: The data points are every 15 minutes, and the full loss occured between captures: 2012-10-18 23:58:03.399647 - has 953.97/2059.07 GB [46.33 percent] 2012-10-19 00:13:15.909010 - has 515.18/2059.07 GB [25.02 percent] Other than that, I have not much to go off :-( I know that: There's nothing interesting in log files at that time Nobody appeared to be logged in via SSH at the time it occured (most users do not even use SSH) The server was online through whatever occured (3 months uptime) None of the other disks were affected and everything else on the server looks completely normal I have tried using "extundelete" on the disk and it didn't really find anything (some temporary files, but they looked new anyway) I am completely at a loss to what could have caused this. I was initially thinking maybe root escalation exploit, but even if someone did maliciously "rm" the disk contents, it would take more than 15 minutes for 400 GB?

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  • MegaCli newly created disk doesn't appear under /dev/sdX

    - by Henry-Nicolas Tourneur
    After having successfully added 2 new disks in a new RAID virtual drive (background initialization done), I would have exepected it to appear under /dev/sdh but it's not there (so, unusable). The system is running a CentOS 5.2 64 bits, HAL and udev daemons are running, not records of any sdh apparition under the messsage log file or in dmesg, only MegaCli do see that virtual drive. Any idea ? Some data: [root@server ~]# ./MegaCli -LDInfo -LALL -a0 Adapter 0 -- Virtual Drive Information: Virtual Disk: 0 (target id: 0) Name: RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0 Size:139392MB State: Optimal Stripe Size: 64kB Number Of Drives:2 Span Depth:1 Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default Virtual Disk: 1 (target id: 1) Name: RAID Level: Primary-1, Secondary-0, RAID Level Qualifier-0 Size:285568MB State: Optimal Stripe Size: 64kB Number Of Drives:2 Span Depth:1 Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU Access Policy: Read/Write Disk Cache Policy: Disk's Default [root@server ~]# ls -l /dev/disk/by-id/scsi-360* lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36001ec90f82fe100108ca0a704098d09 -> ../../sda lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36001ec90f82fe100108ca0a704098d09-part1 -> ../../sda1 lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36001ec90f82fe100108ca0a704098d09-part2 -> ../../sda2 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fe07e78f94940c0000a0ee -> ../../sdf lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fe07e78f94940c0000a0ee-part1 -> ../../sdf1 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fe972a3f91240a0000005f -> ../../sdb lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fe972a3f91240a0000005f-part1 -> ../../sdb1 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fea7e18f94640c000020ec -> ../../sde lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fea7e18f94640c000020ec-part1 -> ../../sde1 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0feb7da8f94340c0000203d -> ../../sdd lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0feb7da8f94340c0000203d-part1 -> ../../sdd1 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fed7d78f94040c000080b7 -> ../../sdc lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a028e0fed7d78f94040c000080b7-part1 -> ../../sdc1 lrwxrwxrwx 1 root root 9 Nov 17 2010 /dev/disk/by-id/scsi-36090a05830145e58e0b9c479000010a1 -> ../../sdg lrwxrwxrwx 1 root root 10 Nov 17 2010 /dev/disk/by-id/scsi-36090a05830145e58e0b9c479000010a1-part1 -> ../../sdg1

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