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• Is it possible to have Grub2's boot.img in the MBR and have it load core.img from a separate boot pa

  - by wesley

  I have a multiboot system that I would like to use Grub to manage. The version of Grub shipping with my Linux distro is Grub2, and it installs its equivalent of stage 1.5-2, core.img, into the remaining sectors on the first track after the MBR but before the first partition. Unfortunately, those sectors are needed by another program. I have a separate primary /boot partition. If I could only keep boot.img as my MBR but have it look in the /boot partition for core.img rather than the embedded one in the sectors immediately following the MBR, everything would work fine. Is this possible with grub2?

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• Install Windows 8 Apps to custom directory

  - by Timothy Ford

  I'm running Windows 8 Pro on a laptop. I initially installed the OS just to fiddle round with it and get to know something I'd inevitably end up having to fix for someone. The problem being I only gave the partition about 32gb and that ran out pretty quick. I'd like to install office and get used to that as well but unfortunately I'm a few gigabytes short. I'd like to know if I can change the install location of office 2013 and other apps so that I can run them from another partition because there is no space left to the right of this partition I can't extend it.

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• Why can I not use the full capacity of my SSD?

  - by bcmcfc

  I am using Paragon to migrate Windows 7 to an SSD. The C drive which should be migrated is a 100GB partition. During the process, Paragon formats the SSD to 80GB. Why doesn't it take the 100 GB? It later fails because it thinks there isn't enough space on the SSD. However the SSD is 11GB bigger than the partition, and only 45GB of the partition were used anyway. How do I get around this? Is there another tool to do the same job which does it better ?

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• Booting ubuntu from usb hdd: GRUB menu not shown

  - by emanemos

  Hello, could anyone help me to boot ubuntu-9.04 from usb hard disk? This disk contains /boot primary partition. During ubuntu installation I used "Advanced" button and asked to install GRUB to the /boot partition. Later I checked whether GRUB files are really present in this partition. They are. However, I get stuck while trying to boot. The boot menu ("ubuntu generic version", "ubuntu recovery mode", etc...) is not shown. Instead I am thrown to GRUB minimal bash-like version. I feel at a loss and have no idea why I am pointed to this minimal version. Can anybody prompt me what to do?

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• Completely formatting a USB flash drive

  - by efcjoe

  I have a Verbatim Store 'n' Go drive which by default comes with software in a partition which password protects the drive. I want to erase this partition, as it only works on Windows (I'm having to look at it now through a virtual machine on my Mac). I've tried using KillDisk to totally wipe the whole thing, but it doesn't seem to work, and this password-protecting partition always remains intact. Is there any program which will completely wipe a flash drive, no questions asked? Or is there a way to do it through the Verbatim software? I have the password and everything, I just can't find a way to fully format it. Cheers.

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• Reverse lookup of inode/file from offset in raw device on linux and ext3/4?

  - by lilinjn

  In linux, given an offset into a raw disk device, is it possible to map back to an partition + inode? For example, suppose I know that string "xyz" is contained at byte offset 1000000 on /dev/sda: (e.g. xxd -l 100 -s 1000000 /dev/sda shows a dump that begins with "xyz") 1) How do I figure out which partition (if any) offset 1000000 is located in?(I imagine this is easy, but am including it for completeness) 2) Assuming the offset is located in a partition, how do I go about finding which inode it belongs to (or determine that it is part of free space) ? Presumably this is filesystem specific, in which case does any one know how to do this for ext4 and ext3?

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• How to buffer stdout in memory and write it from a dedicated thread

  - by NickB

  I have a C application with many worker threads. It is essential that these do not block so where the worker threads need to write to a file on disk, I have them write to a circular buffer in memory, and then have a dedicated thread for writing that buffer to disk. The worker threads do not block any more. The dedicated thread can safely block while writing to disk without affecting the worker threads (it does not hold a lock while writing to disk). My memory buffer is tuned to be sufficiently large that the writer thread can keep up. This all works great. My question is, how do I implement something similar for stdout? I could macro printf() to write into a memory buffer, but I don't have control over all the code that might write to stdout (some of it is in third-party libraries). Thoughts? NickB

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• where is the data store when i using google-app-engine on localhost..

  - by zjm1126

  i want to find the data on my disk thanks

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• How could all of my hard drives fail at once?

  - by Taylor

  I have an Ubuntu 13.04 server. Today I found the box had crashed. I restarted it, and now every single hard drive's partition table is missing. (1 SSD for /boot, /, and 3 2TB drives for RAID). I have the SSD connected to a laptop VIA USB-SATA cable, and sure enough, the partition table is missing. This tells me that the Motherboard / SATA controller / software actually broke the drives, not that they just can't be read correctly. Something similar happened to only the SSD a few months ago, and I was forced to just re-partition it. How the heck could his have happened? Bad Motherboard or SATA controller?

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• Possible to recover older, previously deleted files with R-studio?

  - by SteveO

  The files and directories on one of my ntfs partition were wiped out last time. I used R-studio to scan the partition, and it did find many files, actually more than the capacity of the partition. This is because R-studio found files that were deleted even earlier. So I wonder if it is possible to specify those files and directories deleted last time instead of those deleted earlier for recovery? R-studio has a free demo version, for which scanning is free,but recovery isn't. It is downloadable from http://www.data-recovery-software.net/Data_Recovery_Download.shtml Its manual is here http://www.r-tt.com/downloads/Recovery_Manual.pdf. I have tried my best to search for answers in the manual, but failed to find one. Their technical support is not as good as their software, and helpless usually in my opinion. Thanks!

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• grep a rar in cygwin

  - by Tomer

  Hi, I want to do grep texts files inside a rar without extracting the rar file to disk, I tried a couple of combinations with pipes however it didnt work i tried for example unrar e myrar.rar | grep mysearchedline however it actually opened it to disk, I don't want to open it to disk, I don't have enough space for it to be opened (its real big with real big logs). Thanks.

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• Seagate 1TB 'EXPANSION' external hard drive, showing as BAD

  - by Dave Plews

  Hello! I have bough an external Seagate 1TB drive, which my XP system can see and will write files to, however when I use Partition Magic it describes the whole partition as BAD, and it is shown in yellow. All the options are greyed out. When I use Drive Image XML to try and copy drive to drive (I want a comlplete copy of my C drive including OS), I get an error message saying it can't lock the drive. The external drive is brand new and uses NTFS. Any ideas? Seagate 'support' haven't bothered getting back to me. Incidentally, I have another external drive (320GB), which uses FAT32 and Partition Magic sees that fine. I am doing a full format of the Seagate at the moment, to see if this helps. Thanks in advance!

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• Linux/OS X dualboot on a Macbook Pro with RAID

  - by GaretJax

  I'd like to install Gentoo Linux on my Macbook Pro by keeping my current OS X installation. I currently have OS X installed on a RAID 0 on two 160GB Intel SSDs and I'd like to create a new partition for Gentoo alongside OS X without losing the RAID setup but, from what I read on the net, Apple's software RAID is poorly (read "not at all") supported: BootCamp refuses to create a windows partition on a RAID volume rEFIt is not able to boot an OS from a software RAID even Apple's recovery partition for Lion can't be created on a RAID volume Is there a way to dual boot my Macbook while keeping the RAID solution?

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• RAID 5 heavy IO hard freezes Ubuntu: Why?

  - by Luke has no name

  I have a software RAID 5 partition on LVM in Ubuntu (desktop, actually, but I'm using it as a server). I have been rsyncing a ton of data to it, and the computer was hard freezing, as in I needed to press "Reset". So I thought it was rsync. But I decided I'd try a dd if=/dev/zero of=/path/to/raid5 and sure enough, the computer locked up. Did an identical dd to a JBOD partition on the same machine, and it didn't crash. Assuming a clean RAID5 partition, tri-core processor 2GB of ram, 6GB swap, what could be causing this?

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• Corrupted files, hard drive test?

  - by all-R

  Hi guys, I'm currently on a macbook with a 1TB external hard drive connected trough a USB hub wich is connected on my macbook. The problem is, my disk, wich is partitioned in 2 (one HFS+ and one NTFS) keeps getting corrupted, recently it was my HFS+ partition, I could not repair it using the Apple's Disk utility, but was able to backup my files. Is it synonym that my hard drive is failing? Is it because of my USB hub? I also keep all my iTunes library on my external HD (HFS+ partition), and did a lot of transfer lately, adding files, removing etc. the last time, my partition got corrupted after a lot of deleted items. If anybody has an idea of what to check first, what could cause the problem, I would appreciate it :) Thanks!

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• Windows + Jolicloud crash!

  - by SystmHck

  My girlfriend's Acer Aspire One netbook just crashed running Windows XP. It crashes at the boot process, displays the blue screen for a second and then reboots. I also installed Jolicloud through Jolicloud Express but I am not able to boot it either. I suspect it's a virus... When running a Ubuntu live session from a pendrive it seems like the Acer partition is corrupted. In a partition program it says to run chkdsk in Windows to fix it. I have used Ubuntu for a while but I am not an expert so I wanted to ask: How do I restore my NTFS damaged partition?

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• Compressing digitalized document images

  - by Adabada

  Hello, We are now required by law to digitalize all the financial documents in our company and submit them to evaluations every 3 months. Since this is sensitive data we decided to take matters into our own hands and build some sort of digital data archiver. The tool works perfectly, but after 7 months of usage we are begining to worry about the disk space used by these images. Here some info on the amount of documents digitalized: 15K documents scanned and archived per day, with final PNG size of +- 860KB: 15 000 * 860 kilobits = 1.53779984 gigabytes 30 days of work per month: 1.53779984 gigabytes * 30 = 46.1339952 gigabytes Expectation of disk space usage after 1 year: 46.1339952 gigabytes * 12 = 553.607942 gigabytes So far we're at 424 gigabytes of disk space used, without counting backup. We're using PNG as image format, but I would like to know if anyone have any advice on a better compression algorithm for images or alternative strategies for compressing the PNG's even more or even better ways to archive images as to save disk space. Any help would be appreciated, thanks.

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• Booting an EXT4 image file from GRUB2

  - by sjjg

  My friend needed a fast HDD so I gave her my small 64GB SDD. This SSD had my Linux install on it. I used dd to make an image of the partition (boot, root and home on one partition). This partition is now sitting on a traditional 500GB EXT4 formatted drive. Is there any way I can get GRUB to just boot using this .img file I have? I'm not getting my SSD back and I can't be bothered to go through the hassle of setting up my Linux install from scratch. I have come across loopback support in GRUB for ISO images. Does this support EXT4 also? I don't seem to be able to find anything specific and don't want to trash anything. Cheers.

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• Can I enlarge OS C: drive of my Windows 8 PC?

  - by Sorgatz

  Last year I got a new Western Digital WD Blue 500GB HDD to replace my old drive. The first thing I did was to install latest Windows 8. While installing Windows 8 I created 3 partitions, C drive for the OS and others for storage. The OS partition is 120GB (which at the time I thought would be plenty big) but I'm now realizing its too small! I wonder if it's possible to re-size HDD partition without reformatting and re-install my Windows 8. So that is my question, Can i enlarge os c drive of my windows 8 without having to re-format? I've used the Norton Partition Magic and Disk Management to make this happen but there doesn't seem to be any options to make it happen. Thanks for any help you guys can give regarding my question. I've worked hard to optimize my current install of Windows 8 and would hate to start all over again.

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• How can I create a bootable CD-ROM/USB Drive? (With NTFS + USB Drive support)

  - by RonK

  My motherboard got fried and I was forced to get a new hardware set (MB+CPU+RAM) so in most likelyhood I'll need to reinstall my Windows 7. I usually follow procedure and put the OS on the primary partition and my data on a logical partition - so I can format the primary without concern - but this time I made a mistakte and left some crucial items on the primary partition. I want to create a bootable CD-ROM/USB Drive which can read NTFS so I can access this data. If booting via a CD-ROM, I would prefer being able to connect a disk-on-key/My Passport to the computer and be able to access it to transfer the data to it. How can I do it? (free 3rd party applications are most welcome)

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• Which OS should I boot into for virtualization?

  - by acidzombie24

  This might be a silly question. I use windows 7 99% of the time. I run linux 10% of the time and XP 5% of the time. I am thinking about getting a Intel® Core™ i7-2600 Processor which has hardware support for virtualization. I dont think i want more than one partition. May have a swap partition. Which OS should I make my primary (and only) partition? I suspect windows7 if i am always using it as going through a linux layer would slow it down. Does it matter much which OS i use if i have hardware support for virtualization? At the moment I am using VMWare player. I suspect software doesnt effect performance?

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• Will readyboost speed up a secondary partion or harddrive?

  - by Sebastian

  I'm building a new computer and plan on using a few spare USB sticks with readyboost to cache disk writes. I'll be running Windows 7 Enterprise SP1 x64 I have a single 2 TB disk, and plan to make a partition for windows (100 GB) and use the rest for data. I know Readyboost will work nicely for the C drive, but am unable to find any information on whether it will accelerate a second drive or partition. Just to clarify, I'm NOT trying to use the harddrive instead of the usb sticks. I'm trying to speed up the second partition using the USB sticks So, will readyboost work for a secondary partion or harddrive?

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• Move 2TB Win7x64 to 640GB HDD

  - by reedacus25

  Basically I just got a new (refurbished) HP H8-1260t to use for Windows Media Center. The shipping drive is a 2TB Hitachi drive, but I have an older and barely used 640GB WD Caviar Blue 7200RPM drive I would like to move my Windows install to. I have about 750GB of data with over 1TB free left on the drive. Having googled my heart and fingers out, I would think that I can shrink my partition down to the size it is full at now with over 1TB free for a second partition where I can move my media files to further shrink my boot partition so that I can fit a system image smaller than 640GB on that WD drive. I want to have a separate drive for Media and TV Recordings from my boot disk. Does this sound like the easiest method for me? Or am I doing this all wrong. Help appreciated.

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• How to perform a nested mount when using chroot?

  - by user55542

  Note that this question is prompted by the circumstances detailed by me (as Xl1NntniNH7F) in http://www.linuxquestions.org/questions/linux-desktop-74/boot-failure-upon-updating-e2fsprogs-in-ubuntu-10-10-a-947328/. Thus if you could address the underlying cause of the boot failure, I would very much appreciate it. I'm trying to replicate the environment in my ubuntu installation (where the home folder is on a separate partition) in order to run make uninstall. I'm using a live cd. How to mount a dir in one partition (sda2, mounted in ubuntu as the home folder) into a directory on another mounted partition (sda3)? I did chroot /mnt/sda2 but I don't know how to mount sda3 to /home, and my various attempts didn't work. As I am unfamiliar with chroot, my approach could be wrong, so it would be great if you could suggest what I should do, given my circumstances.

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• Script or Application that will do md5 checking

  - by shanghaiguy

  Is there a program, or a script out there that can compare the md5 checksum of files I tried to create my own, but i'm having problems with any files that have a space in them, so I was wondering if it'd be easier to just use an application. md5deep is something I downloaded that returns the checksum. rm md5mastervalue for i in `ls /media/disk`; do md5deep -rb /media/disk/$i >> md5mastervalue; done for d in 1 3 ; do cp -rf /media/disk/ /media/disk-$d & done wait rm md5valuet1 rm md5valuet3 for k in `ls /media/disk` do for f in 1 3; do md5deep -rb /media/disk-$f/$k >> md5valuet$f; done done for n in 1 3; do diff md5mastervalue md5valuet$n; done echo Finished

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