Posted by: devnullius
« on: 17. March 2013., 23:04:13 »
(misleading title, I know:)
Mostly for my own convenience, posted here.
When I have to check disk for errors OR if I have to wipe a disk with data, there is one tool I use.
I mostly attach the drive in question with a SATA/PATA to usb adapter to my old PC which I boot with a live Ubuntu server disk OR even to my regular Windows PC with the adatper connected to a VMWare installation of Ubuntu Server x64.
Then, with mount and ls /dev/sd* I figure out which disk is which (to prevent accidents! :>).
Then, it's time to do some read/write testing.
Badblocks supports two modes: destructive read-write testing and non-destructive read/write testing.
non destructive read write command?
sudo badblocks -svn -c 250000 /dev/sdX
destructive, secure 4 pass pattern writing command?
sudo badblocks -svw -c 250000 /dev/sdX
For example:
badblocks -svn -c 250000 /dev/sdb
You might adjust the -c value. It tells you how many blocks (whatever:) can be scanned every pass. You need RAM to accommodate this feature :)
Karma,
Devvie
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Cuisvis hominis est errare, nullius nisi insipientis in errore persevare
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