I blew up three disks at once.

How to use TestDisk to recover lost partition
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ust4KIA
Posts: 1
Joined: 17 May 2014, 14:01

I blew up three disks at once.

#1 Post by ust4KIA » 17 May 2014, 14:26

So, I'm another guy who once said "it'll never happen to me..."

I have a homebrew machine that (used to) dual boot linux Mint and W7 on separate SSDs, with data disks at 2G and 3G used by both OS.

My undoing occurred when I decided to add another linux flavor to that SSD without disconnecting the W7 and data disks. As I'm proceeding with the Fuduntu install, it asked me to differentiate between the disk that will hold the OS and data disks without telling me that it will also rewrite the data disks. I blithely ran the install and now I have Linux LVM partitions written over the W7, 2G data and 3G data disks.

Due to the size of the data disks and the time it takes to run deeper searches in Testdisk, today I'm only working on the 128G W7 SSD.

Here's screenshots of "analyze" and deeper search.
http://imgur.com/a/DsG9Z

I've browsed around and don't see a similar pattern in the forums or step by step guides and wonder if this disk is recovererable; if so, what the right steps to follow are. Any help greatly appreciated. Log file follows:

Sat May 17 08:19:22 2014
Command line: TestDisk

TestDisk 6.13, Data Recovery Utility, November 2011
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
OS: Linux, kernel 3.5.0-17-generic (#28-Ubuntu SMP Tue Oct 9 19:31:23 UTC 2012) x86_64
Compiler: GCC 4.7
Compilation date: 2012-10-01T13:00:04
ext2fs lib: 1.42.5, ntfs lib: libntfs-3g, reiserfs lib: none, ewf lib: none
/dev/sda: LBA, HPA, LBA48 support
/dev/sda: size 175836528 sectors
/dev/sda: user_max 175836528 sectors
/dev/sda: native_max 175836528 sectors
/dev/sdb: LBA, HPA, LBA48, DCO support
/dev/sdb: size 3907029168 sectors
/dev/sdb: user_max 3907029168 sectors
/dev/sdb: native_max 3907029168 sectors
/dev/sdc: LBA, HPA, LBA48, DCO support
/dev/sdc: size 250069680 sectors
/dev/sdc: user_max 250069680 sectors
/dev/sdc: native_max 250069680 sectors
/dev/sdd: LBA, HPA, LBA48, DCO support
/dev/sdd: size 5860533168 sectors
/dev/sdd: user_max 5860533168 sectors
/dev/sdd: native_max 5860533168 sectors
Warning: can't get size for Disk /dev/mapper/control - 0 B - CHS 1 1 1, sector size=512
Hard disk list
Disk /dev/sda - 90 GB / 83 GiB - CHS 10945 255 63, sector size=512 - Corsair Force GT, S/N:12307965000015010050, FW:5.02
Disk /dev/sdb - 2000 GB / 1863 GiB - CHS 243201 255 63, sector size=512 - TOSHIBA DT01ACA200, S/N:235HPVAGS, FW:MX4OABB0
Disk /dev/sdc - 128 GB / 119 GiB - CHS 15566 255 63, sector size=512 - M4-CT128M4SSD2, S/N:000000001227090F0E12, FW:000F
Disk /dev/sdd - 3000 GB / 2794 GiB - CHS 364801 255 63, sector size=512 - WDC WD30EURS-73TLHY0, S/N:WD-WMC4N1260436, FW:80.00A80

Partition table type (auto): Intel
Disk /dev/sdc - 128 GB / 119 GiB - M4-CT128M4SSD2
Partition table type: Intel

Analyse Disk /dev/sdc - 128 GB / 119 GiB - CHS 15566 255 63
Geometry from i386 MBR: head=255 sector=63

LVM2 magic value at 0/32/33
Current partition structure:
1 P Linux LVM 0 32 33 15566 19 5 250066944
No partition is bootable
Computes LBA from CHS for Disk /dev/sdc - 128 GB / 119 GiB - CHS 15567 255 63
Allow partial last cylinder : Yes
search_vista_part: 1

search_part()
Disk /dev/sdc - 128 GB / 119 GiB - CHS 15567 255 63

LVM2 magic value at 0/32/33
part_size 250066944
Linux LVM 0 32 33 15566 19 5 250066944
LVM2, 128 GB / 119 GiB

Results
P Linux LVM 0 32 33 15566 19 5 250066944
LVM2, 128 GB / 119 GiB

interface_write()
1 P Linux LVM 0 32 33 15566 19 5 250066944

search_part()
Disk /dev/sdc - 128 GB / 119 GiB - CHS 15567 255 63

LVM2 magic value at 0/32/33
part_size 250066944
Linux LVM 0 32 33 15566 19 5 250066944
LVM2, 128 GB / 119 GiB
NTFS at 15565/241/36
filesystem size 249860096
sectors_per_cluster 8
mft_lcn 786432
mftmirr_lcn 2
clusters_per_mft_record -10
clusters_per_index_record 1
HPFS - NTFS 12 223 20 15565 241 36 249860096
NTFS found using backup sector!, 127 GB / 119 GiB

Results
Linux LVM 0 32 33 15566 19 5 250066944
LVM2, 128 GB / 119 GiB
HPFS - NTFS 12 223 20 15565 241 36 249860096
NTFS found using backup sector!, 127 GB / 119 GiB

interface_write()

No partition found or selected for recovery
simulate write!

write_mbr_i386: starting...
write_all_log_i386: starting...
No extended partition

TestDisk exited normally.

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