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  • Partimage and autocheck problem when restoring Windows XP from image

    - by Xolstice
    I'm trying to create an image of Windows XP and clone it to several partitions on the same hard drive using Partimage. I seem to be running into a problem when I restore the image onto another partition - when I boot into the OS from the partition I just restored, it brings up this message during the boot sequence: autochk program not found - skipping autocheck, and then after this, the OS reboots the PC and the whole process repeats itself in an infinite loop. After doing some Google search, it is suggested that this loop was caused by the partition being hidden or the mountmgr.sys file is missing. I checked my configuration and verified that this was not the case. I'm just wondering: Has anyone else experienced this and is there a solution for it? Is this what happens when you try to restore the image to a different partition on the same hard disk or is Partimage itself the problem? Should I be trying out a different partition cloning software?

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  • mod_cache serving the wrong content

    - by J. Pablo Fernández
    I'm trying to use mod_disk_cache to speed up a web site that is running on WordPress. Whenever I enable it with CacheEnable disk / and the rest being the stock Ubuntu configuration I start to get the wrong results. When I see the main page it's fine, but when I go to a specific post I get a RSS feed instead. Like if the cache is returning the wrong content. I've disabled my RewriteRules as it seems mod_cache doesn't work with that. I'm not even sure where to start to debug such a thing. Any ideas?

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  • Image file can't be opened by windows store app if the file is in the Ext4's external hard disk

    - by ? ?
    My question is described below: I have two disks, external hard disk and removable disk. They are formatted with EXT4. I put the same image in the disks, and use Ext2Fsd to mount the disks. I open the file in win8, and it will default open by the windows store app : photos. It will be success to open if the file is in the Ext4's removable disk. It will be failed to open if the file is in the Ext4's external hard disk. I don't know why it will be failed to open if the file is in the Ext4's external hard disk. Does anyone have similar experiences?

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  • Can my PowerMac G3 B&W really take a harddrive larger than 128GB?

    - by Josh Calvetti
    So it's a well known fact that the PowerMacs manufactured before 2002 cannot take a harddrive larger than 128GB. I have an old B&W that was running 10.4, and upon putting a 250GB drive inside, it told me that I had inserted a 128GB. That was expected. However, I recently decided to turn that machine into a Debian home file server. I shoved the 250GB drive inside, did some formatting, and now it tells me that it is a 250GB drive. Is this safe to use? Will all my data go corrupt after I've added more than 128GB of stuff? In case the specs are helpful to have, it's a 400MHz B&W, 1GB RAM, Rev. B.

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  • How many disks to use for eight channel RAID controller

    - by Tvrtko
    I have a 3ware 8 channel SAS controller and a back plane extender (also 8 channel) which can take 16 drives. I will be creating a single RAID 10 volume. I know that adding more drives has positive effect on performance, but I'm not sure if adding more than 8 drives on an 8 channel controller will have any positive impact at all. Am I wrong? Should I put 16 drives for best performance? Would 8 drives give me the same performance?

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  • Verify server performance

    - by George Kesler
    I'm looking for a quick and SIMPLE way to verify that new servers are performing as expected. The most important metric is disk performance, second is network performance. I’m trying to prevent problems caused by misconfiguration of RAID arrays, NIC teaming etc. The solution should work with both physical and virtual servers. I don’t need sophisticated analysis with different workloads, just one set of benchmarks which I would run against a reference server and later compare to new ones. One problem is that most benchmarks are not giving accurate results when running on a VM.

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  • Apache2 BufferedLogs On - anybody using it ?

    - by Qiqi
    Greetings, I am wondering, whether anybody is using BufferedLogs On with Apache2 and found any issues ? Feature is marked as experimental, but for many years now, so I guess it's rather pretty stable. I am running some servers with constrained disk IO capacity at the moment, so I turned it on hoping that even a small benefit could help in the long run ;-) I do have several to several hundreds requests per seconds so by my thoughts there is really no need to write to log after each request, cause honestly I don't think that my filesystem is the best handler for many unnecessary writes. (OCFS2 shared among several DomUs in the Xen)

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  • How to increase virtual hard drive space

    - by Chris
    I have a Microsoft Virutal PC hard drive (.vhd format) that's maxed out it's 16 gig hard drive space. What would be the best way to increase this diskspace? Booting into the machine (windows xp professional) and using the disk management snap in, I can see that the virtual drive has approximately 40 more unused gigs of space. Trying to use diskpart, I find out that Windows XP can't extend the boot partition. So I'm at an empass, any suggestions on how to increase the partion or to increase the actual virtual hard drive would be great. Note: The virtual hard drive is running on Windows 7 using XP mode.

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  • How can I connect a SAS drive to USB? [closed]

    - by dave
    I have a Dell T710 with Seagate Cheetah 15k.7 SAS disks. If the T710 motherboard dies, I'll need to resort to one of my nightly off-site backups and salvage the journal/logfile from the SAS disk to bring the backup bang up-to-date. I need a way of reading the healthy-but-inaccessible SAS disc that does not depend on the only SAS-capable machine I have to hand. So I bought: SAS to SATA Adapter and: USB 2.0 to SATA Adapter with Power ...so that I could read the SAS drive via USB. I can plug it all together just fine. The chain looks like: USB - SATA - SAS. But the drive does not spin up and the computer doesn't even acknowledge anything being attached by USB. Is there a cheap external enclosure I can buy for SAS drives? I can't believe these USB to SATA adapters are everywhere but the USB to SAS adapters are almost non-existent...

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  • Scan dis problem on xp

    - by Sarfraz Ahmed
    hi, I have four drives on my computer. The problem is that each time i start a computer the scan disk check runs for a drive even if i shut down my computer properly. I ran the thorough scandisk check but still for that drive, the scandisk check is always performed no matter what. I wonder what is wrong although everything is fine and accessible along with drive data. Could you guys please help me out of this? I am using Windows XP SP2. Thanks

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  • Data drive disappearing.

    - by Mike Keller
    We have a Windows 2003 R2 server with SP 2 here that randomly loses a partition. There are two partitions the C: and the D: (the one that disappears). When I go into Disk Management the space shows available on the drive but that it isn't formated. There are two drives that are set up in a RAID 1 array. There isn't anything sticking out in the event log as to something triggering this problem and thank god we do daily backups of the data, but it gets kind of annoying to have to go back in there and reformat the partition and restore the data. Any places I can poke around to find the cause of this or even better solutions to the problem would be appreciated.

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  • copy boot-able partition

    - by Dima
    I have an disk image with 3 partitions: first partition (hd0,0) is boot-able with GRUB1 with the following configuration GRUB file: default=0 timeout=5 title Bank A root (hd0,1) chainloader +1 title Bank B root (hd0,2) chainloader +1 The partitions (hd0,1) and (hd0,2) are also boot-able. I'm trying to clone partition (hd0,1) to (hd0,2) by creating device map using kpartx and copying whole partition using dd command. The problem is: after partition cloning, the cloned partition did not boot (but all files are OK). What the wrong? I need both partitions to bee identical (I'm using them for fail-over purposes into embedded device)

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  • Free, Linux-based rescue CD for Windows machines

    - by Adam Matan
    Hi, Too often, I'm being called to help a friend who screwed a Windows machine by some creative methods. Th usual remedy is backing up the hard drive contents and reinstalling. Right now, this is done by removing the defected hard drive to my machine. I figured out that using a rescue disk running some version of Linux might ease the process. I'm looking for: NTFS access Partition tools Large variety of drivers (Network, Hard drives, etc.) GUI and some rescue wizards a great plus. Any ideas? Adam

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  • dd clone hard drive: Input/Output Error though "chkdsk" says OK

    - by unknown (google)
    Hi, I've used dd to clone hard drives before using 'dd' and a live cd, but have run into a problem. The issue: dd fails with an "Input/Output Error" on /dev/sda3 , even though windows "check disk" (chkdsk) says it's ok. Context: Trying to replace my laptop hard drive w/ a faster one of the same size Laptop has NTFS on a 320gb hard drive Booting into knoppix Knoppix recognizes 'original' drive (/dev/sda) I am using a usb connection for ‘new' drive (irrelevant, but just an fyi) Knoppix recognizes the usb drive as /dev/sdb Using dd, as follows: dd if=/dev/sda of=/dev/sdb "dd" gives the I/O error above at 82Gb (out of 320Gb) I then tried checking each partition as follows and found it failed on /dev/sda3: dd if=/dev/sda1 of=/dev/null dd if=/dev/sda2 of=/dev/null dd if=/dev/sda3 of=/dev/null I have ran windows xp chkdsk on the offending drive in both "find only" and "find and fix" mode and it reports no errors Question How can I find and fix the error on my original hard drive partition (i.e. /dev/sda3) so that dd reads it successfully?

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  • iSCSI RAID1 on two servers, fail scenario

    - by Franz Kafka
    Hallo, a simple question: Image I have two servers, each server has two disks in RAID1. Now I merge the two arrays with iSCSI to one RAID1 disk. Two questions: Can I do the merging of the 4 disks in one go? I can't image how. First I will have to install the os, and then the raid controller is already set up to RAID1. If a whole server fails the other server would continue working without any problems? Does iSCSI notice that the other server is missing and treet this as if the two disks were broken? When the server comes back online the data is resynced, as if I installed new disks into a array? Can I image that this way? Thanks alot.

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  • perfmon reporting higher IOPs than possible?

    - by BlueToast
    We created a monitoring report for IOPs on performance counters using Disk reads/sec and Disk writes/sec on four servers (physical boxes, no virtualization) that have 4x 15k 146GB SAS drives in RAID10 per server, set to check and record data every 1 second, and logged for 24 hours before stopping reports. These are the results we got: Server1 Maximum disk reads/sec: 4249.437 Maximum disk writes/sec: 4178.946 Server2 Maximum disk reads/sec: 2550.140 Maximum disk writes/sec: 5177.821 Server3 Maximum disk reads/sec: 1903.300 Maximum disk writes/sec: 5299.036 Server4 Maximum disk reads/sec: 8453.572 Maximum disk writes/sec: 11584.653 The average disk reads and writes per second were generally low. I.e. for one particular server it was like average 33 writes/sec, but when monitoring in real-time it would often spike up to several hundreds and also sometimes into the thousands. Could someone explain to me why these numbers are significantly higher than theoretical calculations assuming each drive can do 180 IOPs? Additional details (RAID card): HP Smart Array P410i, Total cache size of 1GB, Write cache is disabled, Array accelerator cache ratio is 25% read and 75% write

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  • How to Mirror or Clone a Spanned Volume in Windows 2008

    - by Matt
    I have a spanned volume (3x6+ TB disks spanned to one 20+ TB volume) that I need to mirror or clone to a new 20+ TB (unspanned) volume. Once mirrored or cloned I'm going to destroy the original volume and reuse the storage elsewhere. Windows 2008 will not allow me to mirror it because the original is a spanned volume. I cannot simply copy the data, because there are sparse files on the volume. So the OS thinks there is 150+ TB used on the disk when there really is only around 18TB used physically. When I try to use the copy command it won't run because it thinks the destination volume needs to be 150+ TB to hold it all. A conundrum, but I figure someone here has the answer. Thanks, Matt

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  • Encryption of external HDD -- accessible from windows without installation

    - by Rainer
    I would like to use encryption on my external HDD but I would like to be able to access the encrypted data from Windows as well. As suggested in other questions, TrueCrypt is one option here, or I am using momentarily encfs, which is not available for Windows. But my question goes further: I would like to be able to access the encrypted partition from Windows without installation as I will be using it from different Windows machines for which I have no administrator access. My main OS is Linux and I have full root access to that computer. Is there a full disk or file based encryption which I can use cross platform and which does not require installation under Windows? ADDITION: It seems that TrueCrypt provides a portable mode which fulfills my requirements partly: http://www.truecrypt.org/docs/?s=truecrypt-portable, but still the TrueCrypt driver needs to be installed by an administrator... pitty Thanks

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  • Enlarging everything on 16" 1920x1080 notebook display in Windows 7

    - by Rob
    Does Windows 7 have an option to enlarge everything on the screen, e.g. via a spi setting? How well does this work? i.e. do the objects look clear when enlarged? I ask this because sometimes software that enlarges non-photographic bitmap images e.g. icons and symbols can leave them artifacted with harsh jaggier slopes and blurred lines. I've tried the dpi setting in Windows XP but it doesn't enlarge everything, and some things are not so clear as described above. I'm looking at a notebook/laptop with this spec. I've already enjoyed using a 15.4" 1920x1200 display for 5 years. I've tried the dpi setting in Windows XP but it doesn't enlarge everything, and some things are not so clear as described above. I am buying a laptop for my father who will probably prefer larger objects on the screen, although I want to provide some future proofing by allowing more on the screen if needed. I'm not interested in answers that debate the effectiveness or otherwise merits of 1920x1080 on a 16" display, please. The alternative option of 1366x768 seems too little.

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  • How to interpret IOZone results?

    - by homer5439
    Here are the resuts of running IOZone on an ext3 filesystem on an LVM volume residing on a SAN LUN (it was ran with 5 parallel processes). "Throughput report Y-axis is type of test X-axis is number of processes" "Record size = 4 Kbytes " "Output is in Kbytes/sec" " Initial write " 81628.55 " Rewrite " 83354.72 " Read " 115595.02 " Re-read " 119306.09 " Reverse Read " 47684.20 " Stride read " 10011.09 " Random read " 16751.27 " Mixed workload " 5659.77 " Random write " 1661.85 " Pwrite " 36030.83 Now this is all nice and dandy, but my question is: how do I know whether the values are as good as they could be or there is something to tweak (and if so, what?) The actual usage I will have for that Logical Volume is to act as virtual disk for a VM.

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  • Why am I seeing excessive disk activity when installing applications?

    - by Kev
    I'm running Windows 7 Ultimate 64 bit on a Dell Vostro 1720 with 8GB of RAM, 7200RPM Disk, 2.53 GHz Core2Duo (Windows 7 64 bit is a supported option and the laptop came with the OS pre-installed). I'm noticing some fairly excessive disk activity when running installers. For example the Visual Studio 2010 RC installer constantly accessed the disk for ~10 minutes. It was so excessive that I was unable to use the machine until this ceased. Today I installed Trillian Astra 4.1 for Windows (latest build from the website). Again when I ran the installer I was pretty much locked out of the machine until the disk activity calmed down. In both cases when I eventually managed to launch task manager I could see that the CPU was sitting at around 5% to 7% utilisation whilst this was going on. All other disk related activity is fine, the machine is snappy and applications launch without delay. It's just when I run an installer I see this odd behaviour. Why would this be?

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  • Is Software Raid1 Using mdadm with a Local Hard Disk and GNDB Possible?

    - by Travis
    I have multiple webservers which use many small files to created dynamic web pages. Caching the web pages isn't an option. The webserver also performs writes so I need a synchronous filesystem. I'm looking to maximise performance as it's my understanding that small files is the weakness (to varying degreess) of a cluster filesystem over ethernet. Currently I'm using Centos 5.5, 64 bit. Since it's only about 300MB of data, I'm looking at mdadm using RAID-1 with the GNBD and a local hard disk using the "--write-mostly" option so the reads are done using the local hard disk. Is this possible? If so, is there any advantage to making it a tmpfs disk instead of a local hard disk? Or will the files on the local hard disk just get cached in RAM anyway so I won't see a performance gain by using tmpfs, assuming there's enough RAM available?

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  • Average mail quota usage: tricks to implement unlimited email quota.

    - by Marco Demaio
    I suppose that hosters who provides unlimited mail quota are only claiming it unlimited, and hope that they won't run out of disk space. Correct me if I'm wrong. In order to do such trick they will have probably to calculate the average real quota used by the average user. Let's say on a 100 GB space hosting I offer to 20 x 1GB emails, obviously if all user fill their mail my server would stop working cause they would require 200 GB, but I think I can expect this trick to work cause it will never happen (or it's extermly unprobable) that all user fills up all their mails. But the QUESTTIONS are: What's the average email usage? Can we say that a user normally fills up 1/2 or 1/3 of the quota you provide him? Thanks to any answers/suggetions you might provide.

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