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  • dd on entire disk, but do not want empty portion

    - by Jonathan Henson
    I have a disk, say /dev/sda. Here is fdisk -l: Disk /dev/sda: 64.0 GB, 64023257088 bytes 255 heads, 63 sectors/track, 7783 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x0000e4b5 Device Boot Start End Blocks Id System /dev/sda1 * 1 27 209920 83 Linux Partition 1 does not end on cylinder boundary. /dev/sda2 27 525 4000768 5 Extended Partition 2 does not end on cylinder boundary. /dev/sda5 27 353 2621440 83 Linux /dev/sda6 353 405 416768 83 Linux /dev/sda7 405 490 675840 83 Linux /dev/sda8 490 525 282624 83 Linux I need to make an image to store on our file server for use in flashing other devices we are manufacturing so I only want the used space (only about 4gb). I want to keep the mbr etc... as this device should be boot ready as soon as the copy is finished. Any ideas? I previously had been using dd if=/dev/sda of=[//fileserver/file], but at that time, my master copy was on a 4gb flash ide.

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  • Can not mount my USB disk-- Ubuntu nor windows[dmesg including]

    - by EthanZ6174
    first, here is my dmesn|tail result right after i plugged the disk: $ dmesg | tail [ 2578.697224] scsi 6:0:0:0: Direct-Access HP v100w PMAP PQ: 0 ANSI: 0 CCS [ 2578.698322] sd 6:0:0:0: Attached scsi generic sg2 type 0 [ 2578.916464] sd 6:0:0:0: [sdb] 3921920 512-byte logical blocks: (2.00 GB/1.87 GiB) [ 2578.916950] sd 6:0:0:0: [sdb] Write Protect is off [ 2578.916956] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00 [ 2578.916961] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 2578.922460] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 2578.922470] sdb: [ 2578.969570] sd 6:0:0:0: [sdb] Assuming drive cache: write through [ 2578.969578] sd 6:0:0:0: [sdb] Attached SCSI removable disk there is nothing after 'sdb:' ... at the meantime, the lsusb shows: $ lsusb Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 002 Device 004: ID 03f0:3207 Hewlett-Packard Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 006 Device 002: ID 045e:0737 Microsoft Corp. Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub so... can anyone help me? what's wrong with my USB disk? THX

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  • Ubuntu+Win7--disk error press any key to restart

    - by Siddharth
    Apparently,none of the solutions in any other posts and forums worked for me For some reasons I decided to remove ubuntu from my hard disk drive. My partition table(presently): (/dev/sda1) (fat32) 900 MiB ---(MBR,I suppose) (/dev/sda2) (ntfs) 70 GiB -----(Windows 7) (/dev/sda3) (ntfs) 314.88 GiB --(Personal File storage) (/dev/sda4) (ext4) 80 GiB -----(Ubuntu 13.04) (unallocated) -----1.31 MiB So,after moving(cut-paste) everything(for backup) from the fat32 partition using win7..I booted into Ubuntu and copied the remaining 3 files(hidden in Win7 file explorer) --bootmgr,bootsect.bak,and one more which I do not remember.TERRIBLE MISTAKE After this I again booted into Windows and deleted ext4 partition..formatted it to ntfs..and shut down the pc.Then,I put in a Win7 bootable USB..using command prompt I entered bootrec /fixmbr,and bootrec /fixboot.. Restarting showed me the GRUB..choosing windows 7 showed me "Disk Error. Press any key to restart." I also installed a fresh Win7 installation on the 80 GiB partition expecting a Windows Legacy Bootloader with two win7 options..but did not work. Then..I used a Ubuntu LiveUSB to put it back to the present configuration(above) since all methods to restore the MBR failed.. I copied back the fat32 partitions backup files but couldn't copy those 3 files.Somehow ,they had been recreated and were non-replaceable. I do not want to format the win7 partition for a fresh one. I have used boot-repair..Restore MBR option brings back to "Disk error...." without even going through grub..so I reinstalled grub and I'm able to boot into Ubuntu. grub menu shows the win7 option as "Windows 7 (loader) (on /dev/sda1)". paste.ubuntu.com/5753710 paste.ubuntu.com/5775999

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  • Windows disk change monitoring for malware analysis

    - by SuperDuck
    Not sure if this question belongs to here, because it has some relations with 'serverfault' (system backups) and 'stackoverflow' (software analysis). I'm looking for a solution to monitor disk changes on a Windows system and selectively revert them. It should be able to handle live files like registry parts, so may need to be an offline backup software. It shouldn't silently pass over files which the current admin user doesn't have permissions on (files with no permission entries or owned by the 'system' user) Registry change tracking would be a bonus but is not a requirement I use virtual machines for malware analysis, there is even no solution to list file changes in disk snapshot files (delta VMDK). I currently use Ashampoo for monitoring changes. Though it's the best one between similars, it's not a good software and hasn't really evolved in many 'platinum', 'deluxe' versions released in the last 10 years (it even used non-resizable windows until the latest version). The real problem is it misses some disk / registry changes. Perhaps it only compares modification dates and doesn't catch a change if the dates are preserved. So, I think the solution should compare files using hashes, or file sizes at least. There are numerous backup software out there and I'm sure one can handle this, offline or online.

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  • Windows 7 PC freezes frequently with hard disk light constantly on

    - by Senthil
    I recently replaced a defective hard disk with a new one - Windows 7 - "A disk read error occured. Press Ctrl + Alt + Del to restart" I have been using the new hard disk with a Windows 7 installation for about 4 days. Now it has started freezing frequently. Sometimes every 2 minutes and sometimes every 10 seconds. There is lots of software installed - I am a developer and my PC is full of IDEs, database servers, web servers, developer tools, testing tools, all browsers etc.. My windows is up to date as of now. I have installed ALL updates including optional drivers etc. All my installed software is up to date. I scanned my computer using Microsoft Security Essentials and found nothing malicious. I did a chkdsk /r and found no problems. I did a memory diagnostic and found no problems. When I go into safe mode, it doesn't freeze and I am able to use it normally for longer periods of time. What other steps can I take to locate the problem?

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  • Computer will not boot - disk read error - cannot boot from HD or DVD

    - by Grant Palin
    This is a 3 year-old system: HP a1640n. There have been no issues with it in the past. I added a video card 2 years ago, and more memory 1 year ago, both without issues. There haven't been any recent hardware changes. I did install Win7 in Oct., but there were no issues with that either. I used the computer fine two nights ago, and turned it off. Yesterday, I tried to turn it on, and got the error: "A Disk Read Error Occurred. Press CTRL ALT DEL to restart" So I restart, see the initial start screen (HP) and enter the BIOS. The hard drive and dvd drive appear to be listed, but the names are gibberish text. I tried putting a Windows disk in the dvd drive, and continued with the boot, but the disk did not get recognized. Even though the BIOS was set to check for optical media before the hard drive. Back to the error screen. If the computer would boot from a cd or dvd, I would just figure the hard drive needed replacing. But both being problematic worries me. Is this a matter of replacing both the hard drive and dvd drive, or might it be an indication of a bigger problem? Thanks for any advice.

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  • Windows 7 explorer crashing trying to read external hard disk

    - by Mario De Schaepmeester
    I have a 1TB Western Digital hard drive which is almost full and last time I tried to plug it into my laptop, I got a Windows dialog saying "this hard drive needs to be formatted". I did not panic because I have experienced things like this before and I know it's often solved by simply re-inserting the drive. Now however, whenever I plug it in and try to browse it in explorer by going to "computer", the explorer process crashes after a while. I simply close explorer since it takes ages trying to read the disk and nothing happens. After searching on the internet, the best thing to do would be a chkdsk. I tried it via properties in explorer (which also took a good 5 minutes to open up), locks up as well, after waiting a couple of minutes it says there's no access to the disk so a chkdsk is not possible... I want to make clear that I always use safe removal before pulling out the USB cable. Last time however, safe removal just would not work and when trying to shut down Windows, the logoff screen just would not disappear (I've waited at least 10 minutes or so) and I powered off the PC by force. This may be the cause of the problems but the disk was still recognised immediately after that. I really don't want to format this thing because it contains C: clones of 3 computers and a lot of other stuff that I don't want to re-copy. What would be the best course of action? Update I got chkdsk working via the command line. I used the /F and /R options. I already got a bunch of lines saying "file record segment X is unreadable" or whatever it is in English, my OS is Dutch. It looks bad... Will chdsk repair these errors?

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  • Advice on cloning disk

    - by hks
    I'm going to buy a second disk for backup, the same size as my laptops. I want to mount it in a casing via usb and backup an entire hdd every soemtime. That's because I want the posibility to just switch drives in case of something goes wrong. I'm using Linux and obviously the right tool seems to be dd. The thing is that my laptop drive has a speed of around 50-70 MB/s and usb 2.0 is 57 MB/s. So to copy my 250GB disk should take me more than 1 hour if I'm lucky. I can't wait this much. I want some differential backup. I read one of JWZ articles. In it he gives more details for using rsync on Mac. He writes that there is possibility of making rsync'ed disk bootable. So my question is: how to make rsync'ed hdd bootable under Linux or are there other 'quick backup' tools for Linux that would allow me to just swap drives? Or should I just stick to dd :( ?

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  • where is my disk space?

    - by user166241
    I recently had a problem with .xsession-errors file - it became very big ( 90GB) and took all disk space: How I can check what takes disk space in /tmp?. I cleaned it with command > .xsession-errors but after an hour it became large again. So I deleted it (rm .xsession-errors) - it helped because it wasn't recreated but again after hour disk space disappeared - now there is no .xsession-errors anymore but I don't know where is the memory: df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 106640456 101223392 4 100% / udev 8166744 8 8166736 1% /dev tmpfs 3270224 972 3269252 1% /run none 5120 0 5120 0% /run/lock none 8175552 152 8175400 1% /run/shm du -sc * .[^.]* | sort -n 0 initrd.img 0 initrd.img.old 0 proc 0 sys 0 vmlinuz 0 vmlinuz.old 4 cdrom 4 lib64 4 media 4 mnt 4 selinux 8 dev 12 srv 16 lost+found 68 tmp 1124 run 3396 lib32 5164 .rpmdb 5540 root 8888 sbin 9120 bin 17132 etc 106080 opt 116956 boot 861908 lib 3530584 usr 3821836 var 13371260 home 21859112 total So there is around 100GB used but executing du -sc * .[^.]* | sort -n in root directory finds only ~21 GB - so what takes 80GB?? How to check it? I suspect that when I deleted the `.xsession-errors' file the errors were redirected somwhere else - but where?

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  • Ubuntu 14.04 has a bunch of old kernel directories

    - by NoBugs
    I saw in Disk Usage Analyzer I have 3.13.0-xx for 8 minor versions of the kernel in /lib/modules. Each is around 200MB. I remember having to go through in Synaptic and remove those old Linux versions before, but hasn't this bug been fixed? Is it just paranoid default setting, that perhaps all of the last half dozen kernels might become unbootable, so it keeps each old one around? Or do I have some developer setting enabled by accident that causes this?

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  • Error mounting an external HDD

    - by Slash
    I want to mount an external HDD.I have tried many things but still no success.When i try to mount it from Disk Utility i get this error: Error mounting: mount exited with exit code 1: helper failed with: Unprivileged user can not mount NTFS block devices using the external FUSE library. Either mount the volume as root, or rebuild NTFS-3G with integrated FUSE support and make it setuid root. Please see more information at tuxera.com/community/ntfs-3g-faq/#unprivileged

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  • How to wipe RAM on shutdown (prevent Cold Boot Attacks)?

    - by proper
    My system is encrypted using Full Disk Encryption, i.e. everything except /boot is encrypted using dmcrypt/luks. I am concerned about Cold Boot Attacks. Prior work: https://tails.boum.org/contribute/design/memory_erasure/ http://tails.boum.org/forum/Ram_Wipe_Script/ http://dee.su/liberte-security http://forum.dee.su/topic/stand-alone-implementation-of-your-ram-wipe-scripts Can you please provide instructions on how to wipe the RAM once Ubuntu is shutdown/restarted? Thanks for your efforts!

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  • NTFS volume recognised as "Unallocated Space" but works with Windows

    - by msaspence
    Moving to Ubuntu, I have a drive with windows on a drive with Ubuntu on and 4 other ntfs drives 3 of which appear fine in both systems 1 however works fine on windows (single ntfs volume) but in ubuntu the drive appears in the disk utility with a 134 MB "Microsoft Reserved Partition" and 2TB of Unallocated Space Is there any way I can get this volume to be mounted in Ubuntu with out moving all my data to another driver formatting and then moving back again

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  • Allocating drive space?

    - by Nadim A. Hachem
    I'm trying to install ubuntu but i already have windows 7 on the same computer and i can't afford losing it. everything went perfectly well until allocating drivespace. i dont have the option to "install it besides another operating system " like in the instructions. i only get this menu when my external hard disk is plugged in, but i dont want that. any help assigning partitions? because i have no clue about what to do there this is what the partition menu gives

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  • What partition PlayOnLinux and Wine software has to be installed to?

    - by user211076
    please tell I'm using Ubuntu 12.04 and if I have already created ext4 ./ (partition) and on the same volume I have ./home so if I create a separate partition ./home will the software that I install for example from Ubuntu Download Center will automatically go to ./home (partition) or still ./ (root) because I'm using PlayOnLinux and Wine and all its software only installs to ./home (file system disk) where emulated copy of Windows Xp installed also and it's a lack of space.

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  • Symantec Antivirus Corporate -- two problems

    - by Alex C.
    We have a Windows network with a domain and about 50 clients. A few months ago, we installed Symantec Antivirus, Corporate Edition ver. 10.1.8.8000. There are two problems. The larger problem is that the software isn't very good at stopping viruses. In the last month, four different machines have become infected with those viruses that masquerade as antivirus software. Two machines I was able to clean with MalWareBytes. The other two were hopeless, and I had to reinstall Windows. Is there something I can do to make the Symantec product more effective? As far as I can tell, it successfully updates definitions nightly and pushes the definitions to the clients. The smaller problem is that the Symantec client applications sometimes initiate scans at random (and inappropriate) times. One of my co-workers complained to me yesterday that her computer was running very slow. I looked at the scan history and found that Symantec had scanned the computer three times during the past two days, and each time during the workday. No threats were found. Not sure why it's doing this, but I'd like it to stop. Any help would be appreciated. Thanks.

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  • RightFax 9.3 Available Disk Space?

    - by dkirk
    We are currently running RightFax 9.3 as our fax server. I was just in the RightFax Enterprise Fax Manager resolving another problem and noticed 2 little red exclamation marks in the lower left hand pane. I have one beside "Available disk space for fax images" and one beside "Available disk space for fax database". Both are labeled with 5%? What is this? How can this be resolved? I have plenty of physical storage left on the server drives so I am curious as to which space it is referring to??

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  • OpenIndiana installation hangs at 2% - Preparing disk for OpenIndiana installation

    - by Chris S
    I've been trying to install OpenIndiana on an HP DL320 G6 for a while now. I've got a 16GB HP SDHC card in the onboard slot and a SATA CD-Rom with oi-dev-151a-text-x86.iso burnt to a disc. Installation seems to progress fine until I get to the actual installation portion. The SD card is picked up as a USB Disk. All the other configuration options are very 'normal' (there really aren't many options to begin with). Automatic NIC configuration. The installer starts "Installing OpenIndiana", does a few steps, then gets to "Preparing disk for OpenIndiana installation" at 2%; and just sits there. I've let it sit for half an hour now ans still no progress. How can I get past this issue? PS I'm not terribly familiar with OpenSolaris, but am with FreeBSD and *nix CLIs in general.

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  • Windows 7 Backup Disk Full

    - by George
    What happens when a Windows 7 backup disk is full? I've been trying to find documentation on the issue without success. Does Windows 7 automatically delete the oldest backup files to free up space or does it force you manually pick and choose which files to delete? Time Machine automatically deletes the oldest copy of files, but as far as I can tell Windows 7 makes you manually choose. I keep getting a running out of disk space for backup notice on Windows 7 without any option to not warn me and just delete the oldest files automatically...

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  • Mysql out of disk space

    - by Paddy
    I have just finished developing a rails app which has a mysql db as a backend. The app is meant for high traffic and will store lots of information. I am planning to set up my own web server and host the site from it. If in future my disk space runs out i would want to expand by adding more space. But say if my mysql database is housed in my /disk0s1 and by adding a new drive i have more partitions (and hence more disk space), how then would i extend my database to store information on those partitions too, and at the same time prevent any information from being written on the original partition. Should i go for multiple databases? if so how? If i went for a hosting solution i wouldn't be bothering about this as i would just have to worry about making payments for the extra space :) I always wondered how space is added on-the-go by these webhosts. Is there any specific mysql configuration that i have to make?

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  • Growing the size of a VM's disk in VMware

    - by soandos
    I have a VM that I originally gave 10 GB to (using VMware workstation, and Ubuntu 11.10 is the guest OS). I now wish to add to that. I have seen the option to expand the disk size, but all that does is create a new "partition" that Ubuntu can see. Is there a way to expand the size of the primary partition that the guest OS is using? NOTE: I have seen something regarding doing this for a regular Ubunbu OS that requires a boot disk. Is there a way that I can apply that to this VM case? Using Windows 7 64-bit as the host OS EDIT: To be clear, I am trying to resize the boot partition. Edit 2: GParted's resize option is greyed out.

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  • Prevent full table scan for query with multiple where clauses

    - by Dave Jarvis
    A while ago I posted a message about optimizing a query in MySQL. I have since ported the data and query to PostgreSQL, but now PostgreSQL has the same problem. The solution in MySQL was to force the optimizer to not optimize using STRAIGHT_JOIN. PostgreSQL offers no such option. Here is the explain: Here is the query: SELECT avg(d.amount) AS amount, y.year FROM station s, station_district sd, year_ref y, month_ref m, daily d LEFT JOIN city c ON c.id = 10663 WHERE -- Find all the stations within a specific unit radius ... -- 6371.009 * SQRT( POW(RADIANS(c.latitude_decimal - s.latitude_decimal), 2) + (COS(RADIANS(c.latitude_decimal + s.latitude_decimal) / 2) * POW(RADIANS(c.longitude_decimal - s.longitude_decimal), 2)) ) <= 50 AND -- Ignore stations outside the given elevations -- s.elevation BETWEEN 0 AND 2000 AND sd.id = s.station_district_id AND -- Gather all known years for that station ... -- y.station_district_id = sd.id AND -- The data before 1900 is shaky; insufficient after 2009. -- y.year BETWEEN 1980 AND 2000 AND -- Filtered by all known months ... -- m.year_ref_id = y.id AND m.month = 12 AND -- Whittled down by category ... -- m.category_id = '001' AND -- Into the valid daily climate data. -- m.id = d.month_ref_id AND d.daily_flag_id <> 'M' GROUP BY y.year It appears as though PostgreSQL is looking at the DAILY table first, which is simply not the right way to go about this query as there are nearly 300 million rows. How do I force PostgreSQL to start at the CITY table? Thank you!

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  • Windows 7 Disk Management Spanned Volume vs Striped Volume

    - by Kairan
    Im looking for a reason why a person would use a Spanned volume rather than a Striped volume? If my understanding is correct Striped: Faster read/write speed than spanned, but I "assume" more wear+tear Spanned: No speed benefit like striped, but data is written sequentially and fills up Drive1 before filling up Drive2, so it saves on wear+tear Beyond that Im not sure if there is any other deciding factor on which to use. Definition found below: A striped volume uses the free space on more than one physical hard disk to create a bigger volume. Unlike a spanned volume, a striped volume writes across all volumes in the stripe in small blocks, distributing the load across the disks in the volume. The portions of disk used to create the volume need to be the same size; the size of the smallest free space included in the striped volume will determine.

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  • Formatted a Bootcamped drive as a dynamic disk, now can't boot to either Mac or Windows

    - by Steven H
    I was trying to create an extra partition to get a file from the Windows side of my Macbook Air to the Mac side, and I accidentally made the disk dynamic without realizing it. I am now unable to boot to the Mac side (holding Alt to go into the system manager at startup doesn't even list the Mac partition), and the Windows side blue screens during boot (goes so quickly that it doesn't even get to the error code before restarting). What can I do to fix the issue? I don't know how to make a bootable flash drive that a Mac will recognize, and Disk Utility (via Internet Recovery) couldn't do anything. (cross-posted from apple.stackexchange)

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