Help partition fixing a RAID 5 recovery

How to use TestDisk to recover lost partition
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ingovals
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Joined: 19 Feb 2016, 18:52

Help partition fixing a RAID 5 recovery

#1 Post by ingovals » 19 Feb 2016, 19:25

I would I like to ask for help or some pointers on partition fixing a copy of a RAID 5 array.

I'll try to make the full story short so someone will bother to read it.

Seagate Blackarmor 400 with 3 disks, 2tb each in a RAID 5 setup.

It goes bad and I can't recover (This NAS is a piece of junk IMO), so I connect the disks to PC and find out disc 2 can't read.

I use ReclaiMe Free RAID Recovery on the 2 remaining disc and from what I understand everyhting looks pretty good.

I use the option to write array to disc. now I have a 4tb LaCie external HD and it warns me it will override everything and also a size warning (the size is exactly the same) but I try it anyway.

Now after that is done I do not see the drive anymore, and I find a mention that the partition table might be in the wrong place or something like that.

So I feel a bit out of my depth as I'm not very knowledgeable about partitions. Could anyone give me a nudge in the right direction?

This is what I see using TestDisk:

Select a media, excluding other disks, a C: drive and the 3 raid discs

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Select a media

Disk /dev/sde - 4000 GB / 3726 GiB
Disk \\.PhysicalDrive4 - 4000 GB / 3726 GiB
It seems the LaCie is mentioned twice, so is the C:

I proceed on Disk /dev/sde - 4000 GB / 3726 GiB and it gives me EFI GPT as default option. I run Analysis on that.

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Bad GPT patition, invalid signature.
Trying alternate GPT
Bad GPT patition, invalid signature.
I have no idea what this is. I can only choice Quick Search

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TestDisk 7.0, Data Recovery Utility, April 2015
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org

Disk /dev/sde - 4000 GB / 3726 GiB - CHS 60800 255 63
     Partition               Start        End    Size in sectors
>P MS Data                       63  968785530  968785468 [LaCie]
 P MS Data                968785531  976754645    7969115 [LACIE SHARE]

Structure: Ok.  Use Up/Down Arrow keys to select partition.
Use Left/Right Arrow keys to CHANGE partition characteristics:
                P=Primary  D=Deleted
Keys A: add partition, L: load backup, T: change type, P: list files,
     Enter: to continue
Hmm this looks suspiciously like something that was present after LaCie initializing software ran originally (it was a new drive and the init created two drives/shares, one FAT 32 gb in size and a NTFS one.

So what is going on here, am I out of luck , what is my next step?

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cgrenier
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Re: Help partition fixing a RAID 5 recovery

#2 Post by cgrenier » 20 Feb 2016, 08:32

Use 'p' on each partition to list the files. This way you will know if your data are here or not.
If there are here, on next screen, choose Write, confirm, Quit

ingovals
Posts: 2
Joined: 19 Feb 2016, 18:52

Re: Help partition fixing a RAID 5 recovery

#3 Post by ingovals » 20 Feb 2016, 14:32

cgrenier wrote:Use 'p' on each partition to list the files. This way you will know if your data are here or not.
If there are here, on next screen, choose Write, confirm, Quit
Well these partitions look like the ones (and are named as ) that were there before I wrote the array to the disk, I assumed the they had been overwritten by the ReclaimMe software, is that wrong?

I'll certainly try this method.

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