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  • Blue Screen error BAD_POOL_CALLER 0x000000C2

    - by Adam
    My computer was working fine for months but now when it starts up the Windows XP screen comes up to show the computer is starting up but then a blue screen appears with the error below: BAD_POOL_CALLER STOP: 0x000000C2 (0x00000043, 0xDB3C6000, 0x00000000, 0x00000000) I have tried booting off the Windows XP CD and trying to do a re-installation but when the setup try's to query the disk the setup crashes and exists. I've run diags and that says everything is fine. Any ideas?

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  • Extract 100G of Music from Ipod to Harddisk

    - by user10826
    Hi, I have an ipod 5th gen with 110G of Music and a macbook with itunes. I would like to rip all music files from my ipod to my hard disk and then select only some of the files and add them to the itunes library, which will sync with the ipod. I tried Expod and similar softwares but they hang with more than 50G. Do you know any other approach? Thanks

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  • Office for Mac 2011 does not start, how do I repair the database?

    - by RomanT
    After a TimeMachine restore; Office 2011 is having kittens over permissions it would seem. Having attempted a 'repair' out of Disk Utility, am still seeing: there is a problem with the Office database upon startup, after which Word/Excel work without issues. Outlook on the other hand won't even start. Given the obvious message here "You do not have write access to the Outlook application folder" – where is the DB located to check?

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  • Using Ubuntu switch a failing windows 7 harddrive?

    - by firefusion
    My laptop harddrive has developed some serious read errors in the windows partition. Windows 7 still boots but every single action takes an aeon, and it is definitely due to a harddisk error not due to any spyware. I'm using the Ubuntu partition now. I've ordered a new harddrive but my laptop didn't come with a Windows 7 install disk (I think I was meant to make one with the windows 7 tools). So how can I install Windows 7 on my new harddrive?

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  • Why isn't the backup file created when running sqlcmd from remote machine?

    - by Ed Gl
    I tried running the sqlcmd from a remote host to do a simple backup of a sql 2008 database. The command goes something like this: sqlcmd -s xxx.xxx.xxx.xx -U username -P some_password -Q "Backup database [db] to \ disk = 'c:\test_backup.bak' with format" I get a succesfull message but the file isn't created. When I run this on the sql manager on the same machine, it works. I thought it was permission problems, but I'm using the same username in both cases. Any thoughts?

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  • Erase personal date from corporate laptop

    - by microspino
    Hello I need to delete my data from the company laptop. Nothing special just 2 or 3 folders (I hava a Dropbox on this pc) and I'd like to be sure they are gone. I read about free tools and bootable cd to erase the entire disk, I don't need those but just a free tool to put some zeros wehere my data were before.

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  • Make logwatch reports more interesting?

    - by Alexander Shcheblikin
    Is it possible to improve the quality of reports from logwatch? Like make it not just report disk usage which doesn't even change much in daily operation, but report significant changes in usage or approaching critical capacity levels? If I cannot do that with logwatch and instead have to write custom scripts to produce such reports, logwatch appears to be pretty useless, or even dangerous, as many users reportedly grow to ignore emails from it knowing they are so boring.

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  • Windows install missing NTLDR

    - by Jack
    Hi all. I'm having trouble install WinXP Pro on my pc because NTLDR is missing or can't find during installation process. I highly doubt it's my DVD drive because this machine work fine before the install process. The DVD rom work. Is there a work around for this problem? edit: this is the problem that i'm having. I'm trying to reformat the hard disk with killdisk.

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  • BOOTMGR is compressed Windows Server 2008

    - by AbdulAziz
    This is my first question to "superuser", hope you guys help me. I have Windows server 2008 R2 Enterprise installed in my system, by mistake I clicked the "Compress disk" of my C drive. Now when I am restarting, I met a message at start up that "BootMGR is compressed, Press Ctrl + Alt + Del to restart" Its been 2 days I am searching every where to solve the problem, but all I found only for Vista and windows 7 only. Can any one help?

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  • Can I use BitLocker on a Windows 8 Tablet? How?

    - by Coderer
    I hear that Windows 8 Pro can use full disk encryption. I also understand that Win8 is targeting the "slate" / "tablet" form factor specifically. But all my previous experience with BitLocker requires you to put in some kind of PIN or password at boot time -- how can I do this without a (hardware) keyboard? This preview of an upcoming Win8 tablet mentions BitLocker but doesn't address the PIN issue. Am I missing something?

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  • RHEL6 kick start fails with kernel panic - not syncing error

    - by mrchampe
    On a brand new (just unboxed) Dell Precision 7500 computer, I began a kickstart using a red hat boot disk and a kickstart file hosted at an http address. There is a picture of the full error below with trace information I believe this is different than the other questions relating to kernel panic errors. What I would like to know is What causes the kernel panic How does one fix this such that the kickstart finishes Additional information can be provided as necessary.

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  • How to tune system settings for mongoDB on Linux?

    - by jsh
    Trying to squeeze a lot out of one question here -- please bear with me. Although the MongoDB man pages make several useful recommendations about system settings like ulimit (http://docs.mongodb.org/manual/reference/ulimit/), and other production factors (http://docs.mongodb.org/manual/administration/production-notes/) they seem mysteriously silent on things like virtual memory and swap settings. The closest we get to a hint is that "...the operating system’s virtual memory subsystem manages MongoDB’s memory..." (http://docs.mongodb.org/manual/faq/fundamentals/#does-mongodb-require-a-lot-of-ram). Running the same job - high writes and high reads on about 10,000,000 records in a single collection -- on my 4-processor, 4GB RAM macbook and an 8-core ubuntu box with 64GB RAM I saw dramatically WORSE read performance on the linux box with factory settings, and could hear the disk constantly spinning, indicating high I/O and presumably swapping. Yes, other things were happening on the box, but there was plenty of free RAM, disk space, etc.; furthermore, I did not see evidence that Mongo was expanding to take advantage of all that free RAM as it is touted to do. Linux box default settings were as follows: vm.swappiness =60 vm.dirty_background_ratio = 10 vm.dirty_ratio = 20 vm.dirty_expire_centisecs =3000 vm.dirty_writeback_centisecs=500 I hazarded some guesses looking at docs and blogs for other types of databases (Oracle, MYSQL, etc.), experimented, and adjusted as below. vm.swappiness=10 vm.dirty_background_ratio=5 vm.dirty_ratio=5 vm.dirty_writeback_centisecs=250 vm.dirty_expire_centisecs=500 I saw some immediate apparent improvements in read time. However, when I ran my test jobs again, read performance continued to be painfully sluggish during heavy writes. Then, I REBUILT the collection from an available data source - and suddenly I can read at 1ms or less per record WHILE doing the write job! So the question is really two-fold: 1) What are appropriate VM settings for MongoDB on Linux? 2) (bonus) Does Mongo do some checking or optimization with the OS while data is being built? In other words, if I have built a large data set with suboptimal VM or I/O settings, does Mongo make assumptions during the memory-mapping process that will fail to take advantage of optimizations down the road? Obviously I don't fully grok memory mapping under the hood (I was hoping I wouldn't have to). Any help appreciated...thanks! -j

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  • Linux software Raid 10 no superblock

    - by Shoshomiga
    I have a software raid 10 with 6 x 2tb hard drives (raid 1 for /boot), ubuntu 10.04 is the os. I had a raid controller failure that put 2 drives out of sync, crashed the system and initially the os didnt boot up and went into initramfs instead, saying that drives were busy but I eventually managed to bring the raid up by stopping and assembling the drives. The os booted up and said that there were filesystem errors, I chose to ignore because it would remount the fs in read-only mode if there was a problem. Everything seemed to be working fine and the 2 drives started to rebuild, I was sure that it was a sata controller failure because I had dma errors in my log files. The os crashed soon after that with ext errors. Now its not bringing up the raid, it says that there is no superblock on /dev/sda2. I tried to reassemble manually with all the device names but it still would not bring up the raid 10 complaining about the missing superblock on sda2, and sda1 was also dropped from the raid 1. When I did examine on the raid10 it says that 1 of the initially failed drives is a spare, the other is spare rebuilding and sda2 is removed. It seems that sda decided to fail right when the system was vulnerable to it because when I boot up a live cd it spews out sda unrecoverable read failures. I have been trying to fix this all week but I'm not sure where to go with this now, I ordered more hard drives because I didn't have a complete backup, but its too late for that now and the only thing I could do is mirror all the hard drives onto the new ones (I'm not sure whether sda was mirrored without errors). On the internet I read that you can recover from this by recreating the array with the same options as when it was made, however because sda is failing I cant use it and I don't want to risk using its mirror instead, so I'm waiting to get another hard drive. I'm also not sure whether to include the out of sync drives or if I can actually use those instead to recover the array. Sorry if this is a mess to read but I've been trying to fix this all day and its late at night now, any thoughts on this would be greatly appreciated. I also did a memtest and changed the motherboard in addition to everything else. EDIT: This is my partition layout Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes 255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disk identifier: 0x0009c34a Device Boot Start End Blocks Id System /dev/sdb1 * 2048 511999 254976 83 Linux /dev/sdb2 512000 3904980991 1952234496 83 Linux /dev/sdb3 3904980992 3907028991 1024000 82 Linux swap / Solaris

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  • Does SDHC have any write error recovery ?

    - by marc
    What happen if SDHC card get write error (damaged cell / bad sector) ? Whole card is unusable (to trash, all data written to that sector now and in future will be lost) ? or rewrite sector (flash memory get corrupted when writing so maybe have any function to check if sector was written successfully) to another and mark as fault as unusable what will be seen as reduction of capacity but no data lost. I have to do some research about SD card-s on disk less machines. regards

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  • How to monitor streaming servers

    - by pcdinh
    Hi all, I have had a bunch of Linux based streaming servers that employed lighttpd web server to provide video streaming via port 80. Recently, our service is very slow. Therefore, I would like to ask if there is a good software package that helps us monitor and record our bandwidth usage, lighttpd established connections, TCP sync connections, disk I/O ... over time. Any suggestions? Regards, Dinh

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  • How to disable or tune filesystem cache sharing for OpenVZ?

    - by gertvdijk
    For OpenVZ, an example of container-based virtualization, it seems that host and all guests are sharing the filesystem cache. This sounds paradoxical when talking about virtualization, but this is actually a feature of OpenVZ. It makes sense too. Because only one kernel is running, it's possible to benefit from sharing the same pages of filesystem cache in memory. And while it sounds beneficial, I think a set up here actually suffers in performance from it. Here's why I think why: my machines aren't actually sharing any files on disk so I can't benefit from this feature in OpenVZ. Several OpenVZ machines are running MySQL with MyISAM tables. MyISAM relies on the system's filesystem cache for caching of data files, unlike InnoDB's buffer pool. Also some virtual machines are known to do heavy and large I/O operations on the same filesystem in the host. For example, when running cat *.MYD > /dev/null on some large database in one machine, I saw the filesystem cache lowering in another, monitored by htop. This essentially flushes all the useful filesystem cache in guests (FIFO) and so it flushes the MySQL caches in the guests. Now users are complaining that MySQL is very slow. And it is. Some simple SELECT queries take several seconds on times disk I/O is heavily used by other machines. So, simply put: Is there a way to avoid filesystem cache being wiped out by other virtual machines in container-based virtualization? Some thoughts: Choosing algorithm for flushing filesystem cache in the kernel. (possible? how?) Reserving a certain amount of pages for a single VM. (seems no option for filesystem cache type of pages that reading man vzctl) Will running MySQL on another filesystem get me anywhere? If not, I think my alternatives are: Use KVM for MySQL-MyISAM running VMs. KVM actually assigns memory to the VM and does not allow swapping out caches unless using a balloon driver. Move to InnoDB and tune the buffer pools, dirty pages, etc. This is now considered to be 'nice to have' on the long-term as not everyone responsible for administration of the system understands InnoDB. more suggestions welcome. System software: Proxmox (now 1.9, could be upgraded to 2.x). One big LV assigned for the VMs.

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  • Does SDHC have any write (ECC) error recovery ?

    - by marc
    What happen if SDHC card get write error (damaged cell / bad sector) ? Whole card is unusable (to trash, all data written to that sector now and in future will be lost) ? or rewrite sector (flash memory get corrupted when writing so maybe have any function to check if sector was written successfully) to another and mark as fault as unusable what will be seen as reduction of capacity but no data lost. I have to do some research about SD card-s on disk less machines. regards

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  • Bacula optimization/profiling tools

    - by pufferfish
    I'm trying to get an idea of where the bottlenecks are in our backup system. Are there tools available for profiling this? If not, any pointers to a home grown method would also help. I guess most of the info would be in the bacula logs, but I'd also like to see things like what gets saturated during despooling: disk, CPU or network? This feels like a problem most bacula admins would have encountered.

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  • Recover strategy single bad sector in moricon

    - by Damon
    This week, my harddisk made me an early christmas present in the form of a single defect sector. To make up for the puny size of the present, it chose a sector inside moricons.dll for that. This means that now the system takes about 5 minutes to boot before Windows gives up and moves on, and there's 2 dozen scary "critical failure" entries in the system log after every boot, which is annoying. OK, admittedly, I shouldn't complain, it could be worse, the bad sector could be in ntldr... SMART info more or less indicates (for what SMART can indicate anyway) that the drive is mostly OK. Soft Read Error Rate has a score of 96, and Current Pending Sector Count has a raw value of 8, which translates to a score of 100. Acronis DriveMonitor makes this an issue (lowering the overall rating to 75%), HDD Health calls it "excellent", giving an overall rating of 95% (which is what this harddisk from day one). No single score is below 95 (power on hours and spin up count), and most are 100 anyway. Well, whatever, I've seen drives with perfect SMART values fail from one second to the other, and drives with moderate values work for years. So, I'm inclined not to put too much weight into that overall. TL;DR Now... to the problem: I don't feel like trashing the disk just yet (that's planned with a new OS install upgrading to Win7 early next year, independently of this issue), but in the mean time, I would still like to have a smoothly running system again. Therefore, I feel tempted to tamper with it, but before I render my system entirely unusable (since I've never done this before), I'd like to verify that my planned procedere is likely to suceed in having a working system again: Copy moricons.dl_ from the Windows install disk, rename it to moricons.zip, and unzip it. This gives an intact 5.1.2600.2180 version (the broken one is 5.1.2600.5512 - but I guess this makes not much of a difference, since it's an icon-only DLL, and an outdated copy should work better than one that can't be read) Run chkdsk /r /f` which will "repair" the file (i.e. delete the file without asking, tell the drive to remap the sector, and toss some unreadable junk into a file with a hexadecimal number) Hopefully Windows still boots after this (is that a reasonable expectation, or do I need to have something like BartPE ready? -- but then again, what's that good for in case chkdsk has nuked the entire file system...) Delete the junk file generated by chkdsk, copy the new DLL to %windir%\system32 Reboot. Pray. Maybe I just shouldn't touch anything, since it still kind of works... if annoying, but it works. Unsure... But, is there anything fundamentally wrong with the planned approach? Is this a sensible approach at all?

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