Ivan Femia Hard Disk disaster data recovery
Some months ago I published a guide to recover lost data on an unaccessible partition Easy HD data recovery with TestDisk. This week end I got an other issue on an other PC, home partition (ext3) was no longer readable (on boot I got ata1.00 DRDY ERR UNC what it’s this? 
).
I tried testdisk but nothing seemed to be recoverable, home partition was really unreadable also for teskdisk… Oh my God what I have to do… Do I lose my data? Noooooo I cannot!
Search on the net I found an other procedure, a little bit laborious, but really powerful.
From a live Linux distro, I used Debian Lenny Live CD, install dd_rescue (from source management add all possible sources, thick first three checkboxes)
#aptitude install ddrescue
From http://www.kalysto.org/utilities/dd_rhelp/index.en.html dowload dd_rhelp and decompress. Now we are ready to start…
What do you need?
- A large disk to store recovered data
- A lot of time and patience
Check disk integrity first:
#fsck /dev/sda1
or for ext2/ext3
#e2fsck -f -y -v /dev/sda1
If you encounter some problem try to change the file journal from ext3 to ext2
#tune2fs -O ^has_journal /dev/sda1
Now let’s create a disk image using dd_rhelp, this procedure could take a lot of time depending on partition size.
#dd_rhelp /dev/sda1 /destination/diskbackup.img
#fsck -y /destination/diskbackup.img
Here we are… Last step… Mount the image as a virtual disk
#mkdir /media/backup
#mount -o loop /destination/diskbackup.img /media/backup
#mount -o loop -t ext3 /destination/diskbackup.img /media/backup
Copy all data to a safe place and you did it
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Great Walk-through!
hi,
thanks thanks thanks ,you solve my major problem,
GREAT WORK ON DATA RECOVERY,