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Linux hard disk repair tools?

  • 20-12-2005 2:18pm
    #1
    SolarNexus
    Closed Accounts Posts: 703 ✭✭✭


    Recently, I (rather stupidly) installed two harddrives as raid, one of which I've now had to take out and use in another computer. Now, the data on the drives are completely innaccessible (and for some random reason, fedora chose not to boot so I could backup the data).

    its too late now, but does anyone know of any tools for hard disk repair that can, amongst others do the following:

    resize partitions (NTFS, FAT32, EX3, etc.)
    completely wipe a hard disk, from top to toe (my laptop still has some program installed in the master boot record, which doesnt go when I reinstall... its annoying as hell)
    data repair (reads a disk, looking for files and can restore them -- like if you deleted them; I usually use getdataback, but thats for windows filesystems)

    I tried using partition magic to resize the partitions, but it just didnt want to resize linux partitions.


Comments

  • #2
    Capt'n Midnight
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 92,550 Mod ✭✭✭✭Capt'n Midnight


    If RAID 1 (mirror) then should be able to recover.
    If RAID 0 (stripe) then it's probably every other 64K on each disk so data recovery would be limited to maybe 50% of files less than 64K in size depending on the file system (and that's looking at the raw sectors , the index is most likely toast)

    dban.sourceforge.net/ - boot and Nuke cleans disks of all data forever.

    qtparted will delete partitions and resize partitions.
    gpart can be useful - man gpart to see how more info on partition table
    NB. if you want to make a new partition use the lowest OS you would use with it. all will read/write FAT16 (2GB) most Fat32 ( not Dos or NT ) only windows nt/2k.xp will read/write to NTFS out of the box and if you go for dynamic/basic/encrypted then you are more or less painting your self into a corner

    suggested order
    Dos 5 / Win9x / Nt / 2K / XP / Linux


  • #3
    SolarNexus
    Closed Accounts Posts: 703 ✭✭✭SolarNexus


    great stuff, thanks -- I'll check that out tomorrow (maths test to revise tonight :( )


  • #4
    flamegrill
    Registered Users, Registered Users 2 Posts: 1,862 ✭✭✭flamegrill


    Gparted or gpart

    Former is like partition magic and the later is a recovery tool. I recently arsed up a test where i was putting a boot image on to /dev/sdb4 (usb key) and i put in /dev/sda stupidly.

    /dev/sda was 160GB drive with all my data. Needless to say I wasn't a bit happy. Basically used Gparted to create 1 big ext3 fs over the entire disk and then ran gpart to get back my data. Both operations were successfull. Also found some pr0n i deleted a few weeks previous :)

    Paul


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