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• Win 7 accessing large files uses 100% RAM

  - by user181276

  Running Win 7 64-bit SP1 with 8 GB RAM. I first noticed this problem when using the GUI to copy some large (5+ GB) files from one disk to another. What happens is the physical memory in use rises quite quickly to 100% and the system comes to a crawl. If I just start to access the file in a media player (it is a movie) the memory usage climbs up slowly but eventually reaches 100%. When copying the same files via XCOPY I do not have this problem. Using RAMMAP I see most of the memory usage is under "Mapped File" and is allocated under the "Active" column. If I select "Empty System Working Set" the RAM usage drops back down but then starts to climb back up. Any ideas on what I can check/test to eliminate this issue?

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• Is it possible to fake a Windows install for grub to add to boot menu?

  - by Mussnoon

  When doing a fresh install of a Linux distro (Ubuntu, for instance) on a fresh hard drive, if I want to install Linux first, and Windows later, is it possible to make grub think there's a Windows install on the first partition so that it'll be added to the boot menu after the installation is complete? To illustrate, I have a new hard drive and have created two primary partitions (both still raw) and two logical (Ext4 and Swap). I want to install Ubuntu on the Ext4 partition first, and some version of Windows on the first primary partition only after that (because I currently don't have a Windows install disk, but do have one for Ubuntu). Is it possible to make Ubuntu add an entry for Windows right now and avoid having to repair grub after I've installed Windows?

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• What is the best way to clone Win7 machines?

  - by John Hoge

  I'm looking to buy 5 new Win7 boxes and would like to ease deployment by cloning the OS. What I would like to do is install a fresh OS (Dell doesn't seem to sell machines without preinstalled crapware anymore) and then install a few apps on the first one. Once it is just right, I want to clone the OS and install the image on the other four machines and just change the machine name. Is this possible to do without any extra third party software? What I am thinking of doing is backing up the disk image of the first machine to a network share, and then booting the others to the windows install DVD and restoring the same image on each machine. Has anyone had any luck with this technique?

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• Can I trust that ZFS is consistent between Linux and FreeBSD?

  - by iconoclast

  I'm planning to build a FreeNAS box sometime soon, but if ZFS on Linux eventually proves to be reliable, I might want to switch, just to have a more familiar OS. So I'm wondering if I can trust that the different implementations of ZFS are compatible. In other words, if I just swap out the boot disk from FreeNAS to Linux or OpenIndiana, can I trust that nothing bad will happen to my data? This may seem like a stupid question--obviously it ought to be compatible--but I'm guessing that ZFS isn't commonly used in cases where drives are moved between computers, so I'm hoping someone can provide a better answer than just "it ought to be".

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• ESXi 4 failed to find boot device

  - by phil

  I had exsi 3.5 running just fine, the upgrade to 4 failed ( i thought it would so everything is backed up ). but it did boot just could not import the data store So i did a fresh install of ESXi 4. Now it says failed to find boot device. Not sure why. i have wiped the disk, the controller is a adaptec 3405, it worked fine in 3.5 and when i upgrade to 4 it did boot. Now it just hangs at loading vfat. then the failed to find boot device. Any ideas?

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• Why my pendrive is showing used space when it is actually empty?

  - by Deb

  I recently got some virus in my pendrive. I removed them using Microsoft security Essential and cleared all data. But it is showing that 47.1MB of space is being used. Is it due to the virus affect? There is no hidden files on the pendrive and I have also set Show hidden files in the Folder and search option. Permission is also granted to everyone. I also use disk management to check any issue but nothing found. I think formatting will solve the the problem but in that case I will not be able to see the data. Is there any command to see the files in cmd or any other way?

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• Good Linux Distro for Disconnected Netbook

  - by MrWizard54

  I'm deployed to Afghanistan with the Army and I have a friend who's netbook had his hard drive take a dump on him. He ordered a new hard drive and I was able to download and burn a copy of Ubuntu to disk from work. However the default install doesn't support most of the media that he wants to watch (AVI files, probably some DIVX video) without installing extra packages. We don't have internet in the tent and really don't have a vaiable option for downloading additional packages through the package manager anywhere here. The computer is a small HP netbook. All my friend wants is to watch ripped movies. Does anyone know of a good way to do either of the following: Download packages seperately and install them via CD A distro that is going to come preloaded with all of the packages and needed to watch just about any type of video file you can think of? Thanks in advance, Andy

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• Securely wiping a file on a tmpfs

  - by Nanzikambe

  I have a script that decrypts some data to a tmpfs, the directory is secure (permissions), the machine's swap is encrypted (random key on boot) and when the script is done it does a 35 pass wipe (Peter Gutmann) of the cleartext on the tmpfs . I do this because I'm aware wiping files on a journaling file system is insecure, data may be recovered. For discussion, here're the relevant bits extracted: # make the tmpfs mkdir /mnt/tmpfs chmod 0700 /mnt/tmpfs mount -t tmpfs -o size=1M tmpfs /mnt/tmpfs cd /mnt/tmpfs # decrypt the data gpg -o - <crypted_input_file> | \ tar -xjpf - # do processing stuff # wipe contents find . -type f -exec bcwipe -I {} ';' # nuke the tmpfs cd .. umount -f /mnt/tmpfs rm -fR /mnt/tmpfs So, my question, assuming for the moment that nobody is able to read the cleartext in the tmpfs while it exists (I use umask to set cleartext to 0600), is there any way any trace of the cleartext could remain either in memory or on disk after the snippet above completes?

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• What is the best software to capture full-screen 3h programming session in Windows?

  - by Hugo S Ferreira

  Hi, I'm planning a laboratorial experiment to assess behavior of groups when programming using some tools under study. For that, I'll need to capture their entire screen to disk. Mostly, what will be displayed is code, so I'm not to worried with image quality. However, it's paramount that the team is not able to stop the recording by accident, and the tool should be rebust enough to hold at least 3h of video. If possible, it would be nice for researchers in other rooms to "watch" the video as it is recording. Actually, this last requirement reminded me that I could use a VNC recording software, and install a VNC client in each laboratory computer. Anyway, what is your experience with this? Which software do you recommend? Thanks.

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• Satellite TV on my PC?

  - by jasondavis

  What would be a good solution for hooking up the satellite TV box (Dish network) in my room to be able to watch it on my PC and possibly record video from it? Please share with me the best cards, cables, software, anything else needed to do this in the most efficient way? I am looking at the WinTV-HVR from Hauppauge. I am not sure, for performance, what would be the best to go with, PCI, PCI express, USB2.0? Also on the Hauppauge website I saw this note: "WinTV-PVR products will not work in PC systems with 4GB or more of memory." The new PC I am building will be 12-24gb of DDR3 RAM, does that mean their products will not work at all with my memory? So confused now!

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• XFS and loss of data when power goes down

  - by culebrón

  Each time electricity goes down, my desktop (without UPS) loses some temporary information. Opera can lose settings, history, cache, or mail accounts (Thanks heavens I was wise to use IMAP). Partially or all together. a whole file (complete and save) in Geany appeared empty (and I didn't commit it to Git) rhythmbox lost all podcasts subscription data I'm afraid there are other losses I just didn't see. What's the reason? A memory files cache, a mem-disk? Or non-atomic file writes in xfs? I have Ubuntu 9.10 and XFS on both / and /home partitions. Is ext4 safer in such circumstances? I've seen ext3 is faster. Is it as safe as *4? Given that the apartment I rent is connected to a common bus and 1 safety switch for several apartments, and the neighbors - alone or together - overload it at least once every week, the lights go down often enough for this to be an issue.

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• Missing graphics accelerator for Toshiba C855D-s5232

  - by user2387429

  I formatted the drive and re-installed Windows 7 64-bit on a Toshiba Satellite C855D-S5232. Now I am missing the graphics accelerator. I have been to Toshiba's website but cannot find the right one. Same is so for AMD. It has AMD E1-1200 APU with Radeon HD Graphics. The machine is recognizing a standard VGA. I ordered a recovery disk on eBay and it was supposed to be here yesterday. Can anyone help with other options?

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• Why won't the floppy mount?

  - by dboarman-FissureStudios

  The 1.44Meg floppy won't mount in my Nautilus file browser. When I try to mount it, it says there is no media in the drive. Yet, I can write to the floppy through the terminal using the 'cp' command. I can enter the command: mount -t ext2 /floppy and it mounts. I have also run a check and the disk itself is 100% clean. So, why can't I get the nautilus browser to open up the floppy? Is there a way to see the actual floppy from the terminal?

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• PLesk Error: pmm-ras error (Error code = -6): during restore.. /tmp folder to increase?

  - by eric

  I had to re-install plesk on a centos 6 system after a crash. The full backup file is 11 gb. but at the beginning of the backup reinstall I get the error Error: pmm-ras error (Error code = -6): argh ! my disk organization is like this Filesystem Size Used Avail Use% Mounted on /dev/xvda1 3.7G 801M 2.9G 22% / /dev/mapper/vg00-usr 14G 1.5G 12G 12% /usr /dev/mapper/vg00-var 155G 14G 134G 10% /var /dev/mapper/vg00-home 3.9G 136M 3.6G 4% /home none 1000M 7.5M 993M 1% /tmp I suppose I have to increase my /tmp folder to accept the backup size,but I don't know how-to. I'm on 1&1 cloud server Thanks for your help. You can imagine the emergency of this situation...

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• Plugging GlusterFS and Openfiler together

  - by lpfavreau

  Has anyone had experience plugging GlusterFS and Openfiler together or something similar? Here is the motivation: Disk space on multiple server regrouped using GlusterFS Centralized access using LDAP/AD and quota management using Openfiler as the GlusterFS client SMB/CIFS server for easy sharing to multiple users on Mac and Windows I know I can have Gluster installed on Openfiler (rPath Linux) successfully but Openfiler seems to be very picky on what it can use as a shared drive. Mounting the Gluster volume inside an existing share does not seem to allow quotas with the mounted folder free space. If this is not possible, is there any alternative to give the same capabilities?

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• OS X Snow Leopard fails to boot after upgrade to 10.6.1

  - by pixeline

  I'm a fairly recent mac user. Been using windows for decades and happily switched. But i upgraded from 10.6 to 10.6.1 last night and the upgrade looks like it failed. I restarted the machine when it asked to then went to bed. In the morning the computer was still trying to shut itself off. So i forced the shutdown, restarted, but now i'm stuck with the loading spinner. What can i do? UPDATE: Verbose didn't show anything interesting. i also did the hardware test. Nothing comes up wrong. Disk utility did not find any error on the HD. But, it did show a fatal error when checking permissions.

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• Software RAID 10 on Linux

  - by vpetersson

  For a long time, I've been thinking about switching to RAID 10 on a few servers. Now that Ubuntu 10.04 LTS is live, it's time for an upgrade. The servers I'm using are HP Proliant ML115 (very good value). It has four internal 3.5" slots. I'm currently using one drive for the system and a RAID5 array (software) for the remaining three disks. The problem is that this creates a single-point-of-failure on the boot drive. Hence I'd like to switch to a RAID10 array, as it would give me both better I/O performance and more reliability. The problem is only that good controller cards that supports RAID10 (such as 3Ware) cost almost as much as the server itself. Moreover software-RAID10 does not seem to work very well with Grub. What is your advice? Should I just keep running RAID5? Have anyone been able to successfully install a software RAID10 without boot issues?

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• Install both 64-bit and 32-bit JDK on a 64-bit windows?

  - by Toperi

  I need to use a java library that uses native code requiring a 32-bit jvm. I have 64-bit windows with 64-bit eclipse installed with 64-bit JDK7. In order to develop with it, do I need to have 32-bit JDK? Or would the JRE suffice? If it is possible to install both, what is the naming convention you use for the installation directory for the 32-bit jre or jdk? I have heard rumors there is a performance hit on virtual memory if both are installed, is this true?

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• Round-Robin DNS in mobile networks

  - by k7k0

  After reading load distribution alternatives and giving my limited skills on the area I'm biased toward round-robin DNS strategy. From what I understood, one key aspect of DNS Round-Robin is setting a low TTL value, avoiding caching. My main concern is that all my traffic comes from mobile networks, almost 30% of that comes from t-mobile 3G. Some questions: 1) Is there a chance that almost all clients on the same mobile network will be redirected to the same IP in the TTL frame? That would kill the distribution technique. 2) If I choose a really low TTL (zero or one). That impacts directly over client performance? It does a DNS miss every time or it's a setting that only impacts on DNS servers? Any help would be much appreciated. Thanks

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• Windows 2008R2 two node failover cluster creation fails

  - by Francois Wolmarans

  We have just installed two Windows 2008R2 Enterprise machines with identical hardware. When running the cluster validation everything is ok. When creating the cluster it fails with the following error: An error occurred while creating the cluster. An error occurred creating cluster 'CLUSTER04'. The parameter is incorrect The logfile on the first node where we are running our config from, does not show any errors. On the second node we get: The Cluster service is shutting down because quorum was lost. This could be due to the loss of network connectivity between some or all nodes in the cluster, or a failover of the witness disk. I've double checked and all communication between the servers are fine. Even when creating a one node cluster it gives the error. There are other failover clusters we have setup without any issues.

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• Linux - Debian - Original groups that a user is in

  - by Auxiliary

  This is embarrassing; I used the usermod command to add myself to the disk group. However I forgot to use the append option! so I'm not a member of any of the groups that I was originally, now terminal says that I'm not even a sudoer (How rude!). So the question is: What are the original groups that a normal Administrator type of user is in? BTW, I am using Linux Mint Debian Edition (LMDE). Any help is appreciated.

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• Won`'t read Unicode characters over NFS mount ?

  - by Julz

  Hello, I'm getting this strange issue when trying to play mp3's containing unicode characters ( accents ) over an NFS on OSX, it's all good over AFP, but I'm setup with NFS because it's a linux server on the other end . This is my disk utility setup : nfs://192.168.1.112/Music advanced mount parameters : -P , nolocks nosuid The strange thing is that I can see those files in the finder ( with the accents .. ) but I cant play them !! So Im wondering if it's an unicode issue, since I can see the files properly or a permission issue since I can't play them, but them it wouldn`t make sense that I can't play ONLY the files containing accents .. help ?? Thanks

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• Create bootable partition from image

  - by Carson Darling

  I have a Macbook Pro with a dead CD drive. I don't have easy access to a replacement drive. I'm trying to install Ubuntu, and I can't get the MBP to recognize a USB stick as a bootable media (I believe MBP's have issues with booting from USB in some cases). Is it possible to take a disk image and write it to a partition on the HDD so that I can then boot from that partition and then install the OS onto a third partition? Partition layout: 150GB OS X 50GB Ubuntu destination 5GB Ubuntu install image

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• few questions on making a flash drive to a hard drive

  - by user23950

  I've found a tutorial here on how to trick the operating system to see a flash drive as a hard drive. http://www.getusb.info/usb-hack-turn-a-usb-stick-into-a-hard-drive-or-local-disk/ But I have a few questions: This trick will only work on the os wherein you updated the flash drive driver. Is there a trick that will work like this one, but if you plug in the flash drive to another computer it will still be treated as hard drive? How do I convert it back to a flash drive?

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• White Screen of Death

  - by cust0s

  The other night I updated my iTunes to the latest version (through Software Update) when I came to turn on my computer I was greeted with the dreaded white screen of death. I use an early 2008 iMac 24". I've tried the basic things, unplugging/turning off accessories, trying to boot from the install disk, reseting pram, etc, etc. Still no luck and no change what-so-ever. All I've been able to ascertain that my keyboard still works (by ejecting). I should point out that I did recently replace my Hard drive with a Western Digital Black 500GB (though the computer is well out of warrenty) and I'm a little concerned that the problem could be the screen.

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