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Impalatore-polacco
Apprentice
Joined: 15 Apr 2007
Posts: 203
Location: Campogalliano - bell'ITALIA
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 Posted: Tue Nov 27, 2007 9:38 am Post subject: HD recovery and softwares [SOLVED] |
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Hy, I have an HD full of badblock and I'm asking if you know wich software is the best for data recovery.
I know dd, ddrescue,dd_rescue and dd_rhelp...but witch one of this is most usefull for my case? It doesn't matter if the recovery take me long time, the important is the accuracy of the software and all the data readable from the HD it must be recovered.
PS: I've tryed dd_rhelp, but it goes in timeout because the accessibility to the resource it takes some minutes
THX
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Ci stanno osservando, ci sono i pipistrelli....ne hai presa troppa bello, ne hai presa troppa
Last edited by Impalatore-polacco on Thu Nov 29, 2007 8:42 pm; edited 1 time in total |
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selig
Guru
Joined: 31 Jul 2005
Posts: 425
Location: Prague, Czech Republic
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| Posted: Tue Nov 27, 2007 1:19 pm Post subject: |
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Well when I had this problem, I first tried to run e2fsck (providing you have got an ext2 or ext3 file system) with the -c option
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e2fsck -f -c -c [device]
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(You can specify the -c option once or twice - if twice, it will perform write testing too and thus it will take twice as long to complete, but can possibly uncover more errors.)
It will try to mark all bad blocks as bad and should provide you with a working file system afterwards. You can then mount it and copy the contents somewhere else, and finally unmount the disk and bid it farewell 
I remember using dd_rescue for rescuing floppy disks. The downside of using any dd-like program is that you need enough space to hold the complete partition image, including free space on the device and then, as a second step, copy the files out of the image.
If e2fsck with the -c option(s) is successful in allowing you to read the complete contents of the file system, it is better and faster to use it. So I would say, first try this and if it for some reason does not work well, you can always try dd_rescue later.
Good luck! (with the bad blocks, you will need it  ) |
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Impalatore-polacco
Apprentice
Joined: 15 Apr 2007
Posts: 203
Location: Campogalliano - bell'ITALIA
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| Posted: Tue Nov 27, 2007 1:52 pm Post subject: |
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Thx for the interest, but I have a M$ partition type, and when I plug the hd under windows it freeze...so I have to do this under GNU/Linux.
The hd is very very damaged but something is readable I think, and I can't mount the hd because if I mount it he takes more damages and I need to work with the device in Read only mode. My plan is to copy the disk to image.bin and after mount it on Loop and perfomr a testdisk and then dd the image to a safe disk, finally do a chkdsk [disk:] /F /V /R from windows.....very very long operation, but I think it could work.
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Ci stanno osservando, ci sono i pipistrelli....ne hai presa troppa bello, ne hai presa troppa |
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Impalatore-polacco
Apprentice
Joined: 15 Apr 2007
Posts: 203
Location: Campogalliano - bell'ITALIA
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| Posted: Thu Nov 29, 2007 8:42 pm Post subject: |
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I used this sw:
-ddrescue
-testdisk
-foremost
-and under M$ chkdsk [drive:] /F /V /R
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Kernel & Hardware
