Tools for hard drive diagnostics, repair, and data recovery
October 25th, 2012, 4:24
Hi!
I'm in the process of recovering data from a Nas with 2 hdd in raid 1.
Both disks are defective (nas has fallen on the floor while powered on ...). I successfully dumped one of the disks to a new one, but with a lot of bad sectors.
I was wondering, if I copy the second disk to the same target again, will it leave the target untouched when it encounters bad sectors on the source ? Or will it empty them on the target ?
The idea is trying to get most of the datas from both drives.
For short, if I do a copy of the second failed drive on the target, will it allow me to recover data when there was a bad sector in a particular place on disk 1 and there is none on disk 2 ? Or will it erase the target when bad sectors are encountered ?
Thanks
October 25th, 2012, 5:36
You need to clone both drives to 2 good working drives & then create a virtual mirror in R-Studio. Add the cloned drives (not the originals) & then try to recover data using the software.
http://www.data-recovery-software.net/Loki
October 25th, 2012, 5:46
loki wrote:You need to clone both drives to 2 good working drives & then create a virtual mirror in R-Studio. Add the cloned drives (not the originals) & then try to recover data using the software.
http://www.data-recovery-software.net/Loki
+1
October 25th, 2012, 5:48
Well, this is a LaCie NAS, so datas are on XFS partition.
As I have recorded the LBAs of the bad sectors, I'll try to sort it out by myself using linux's dd and a custom script.
For now I don't have a 2nd new drive to clone the 2nd drive (I'm out of 2 TB HDDs ..)
Thanks for the hint anyway
October 25th, 2012, 8:09
Or maybe I'll give
ddrescue a chance to work by itself
October 25th, 2012, 10:13
Corpo wrote:Well, this is a LaCie NAS, so datas are on XFS partition.
As I have recorded the LBAs of the bad sectors, I'll try to sort it out by myself using linux's dd and a custom script.
For now I don't have a 2nd new drive to clone the 2nd drive (I'm out of 2 TB HDDs ..)
Thanks for the hint anyway
Mdadm works well with these LaCie NAS's.... If you're already using Linux, then give it a try - but get a good clone of both drives first and work with those.
October 25th, 2012, 16:23
Thanks for hints, I'll keep you updated with my progresses
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