On 17/06/18 21:55, Piero wrote:
so correct me if I am wrong:
1) I will start with a live distro (ages ago I have used rescatux to
rescue a veeeery old Mandriva disk, but maybe a Debian will work the same)
2) apt-get install ddrescue (if not present)
3) ddrescue -v /dev/OLD_HARD_DISK /dev/NEW_HARD_DISK
/somewhere/ddrescue.log
4) fsck.FILESYSTEM_TYPE /dev/NEW_HARD_DISK
NO CAN DO.
You need two disks from your raid-5 or you can't assemble it. If you
can't assemble it you have no filesytem, sorry :-(
Oh - and even if you succeed in assembling your array, do NOT do a "fsck
--fix" or whatever the syntax is. You do NOT want to write to the
filesystem until you are confident it is all safely back - a check-only
fsck should complete with no errors to speak of.
5) installing the new disk on the NAS and say a prayer
Cheers,
Wol
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