I have an external 2000 GB/ 1862 GiB HDD that I use primarily on my Mac. I can't remember exactly, but I'm sure that it had a GUID partition table. I had 2 HFS+ partitions: MiniPro (its size was something like 1460 or 1480 GB) and MiniPro Virtual Instruments (500 GB). It also had a FAT32 partition in case I should use it to take some files to a Windows machine (7 or 8 GB I think, can't remember very well now).
I had never connected the HDD to Windows, I did so a few weeks ago and it was fatal... Windows asked me to initialize the drive, I declined (obviously) but when i reconnected the drive to my Mac it was "not readable". I found testdisk when looking for a solution and it looks brilliant.
I'm running testdisk on Linux right now, I connected the HDD through a USB 3.0 port to accelerate the process (normally it is connected via FW800 on my MBP).
I have the quick search results but I don't dare to go any further (rewrite the partition table) without a little bit of expert advice. I had also the deep search results (took 24 hs to complete) but yesterday a power shortage made me loose the results and I accidentally overwrote the log file when I ran testdisk again this morning.
Now I'm running again the deep search, but I will paste here what I got so far, maybe you can tell me if I got enough information to attempt a partition recovery or I must wait till the deep search completion again.
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TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
TestDisk is free software, and
comes with ABSOLUTELY NO WARRANTY.
Select a media (use Arrow keys, then press Enter):
>Disk /dev/sda - 500 GB / 465 GiB - ST500DM002-1BD142
Disk /dev/sdb - 2000 GB / 1863 GiB - ASMT 2105
>[Proceed ] [ Quit ]
nicolas@nicolas-lenovo:~$
Note: Disk capacity must be correctly detected for a successful recovery.
If a disk listed above has incorrect size, check HD jumper settings, BIOS
detection, and install the latest OS patches and disk drivers.
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TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdb - 2000 GB / 1863 GiB - ASMT 2105
Please select the partition table type, press Enter when done.
[Intel ] Intel/PC partition
>[EFI GPT] EFI GPT partition map (Mac i386, some x86_64...)
[Humax ] Humax partition table
[Mac ] Apple partition map
[None ] Non partitioned media
[Sun ] Sun Solaris partition
[XBox ] XBox partition
[Return ] Return to disk selection
Hint: EFI GPT partition table type has been detected.
Note: Do NOT select 'None' for media with only a single partition. It's very
rare for a drive to be 'Non-partitioned'.
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TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdb - 2000 GB / 1863 GiB - ASMT 2105
CHS 1907729 64 32 - sector size=512
>[ Analyse ] Analyse current partition structure and search for lost partitions
[ Advanced ] Filesystem Utils
[ Geometry ] Change disk geometry
[ Options ] Modify options
[ Quit ] Return to disk selection
Note: Correct disk geometry is required for a successful recovery. 'Analyse'
process may give some warnings if it thinks the logical geometry is mismatched.
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TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdb - 2000 GB / 1863 GiB - CHS 1907729 64 32
Current partition structure:
Partition Start End Size in sectors
Trying alternate GPT
1 P EFI System 40 409639 409600 [EFI System Partitio
2 P Mac HFS 409640 2914710007 2914300368 [MiniPro]
3 P Mac HFS 2914972152 3891534655 976562504 [Untitled]
check_FAT: Unusual media descriptor (0xf0!=0xf8)
Warning: number of heads/cylinder mismatches 255 (FAT) != 64 (HD)
4 P MS Data 3891798016 3907028991 15230976 [Untitled] [MINIPRO
FAT]
P=Primary D=Deleted
>[Quick Search] [ Backup ]
Try to locate partition
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TestDisk 6.14, Data Recovery Utility, July 2013
Christophe GRENIER <grenier@cgsecurity.org>
http://www.cgsecurity.org
Disk /dev/sdb - 2000 GB / 1863 GiB - CHS 1907729 64 32
Partition Start End Size in sectors
>P EFI System 40 409639 409600 [EFI]
P Mac HFS 409640 2914710007 2914300368
P Mac HFS 2914972152 3891534655 976562504
P MS Data 3891798016 3907028991 15230976 [MINIPRO FAT]
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
FAT32, blocksize=512, 209 MB / 200 MiB
Thanks in advance,
Nicolas.