Lost Partition

Piyono

Storage is cool
Joined
Jan 25, 2002
Messages
599
Location
Toronto
The saga continues:

Some of you will remember MLII from my previous episodes. For those uninitiated, MLII is a Maxtor MaxLine II hard drive with a capacity of 250GB.

MLII is a backup drive, and was formatted with an extended partition containing two 119GB (after formatting overhead) FAT32 partitions (drive H: and drive I:) in the hopes that my older USB2 drive enclosure would be able to address the higher sectors if they appeared as two separate drives (it could not).

Yesterday I purchased a new enclosure (Bytecc ME-320U2F) which claims to support hard drives up to 300GB. It offers both USB2.0 and 1394a connectivity. I installed the drive and plugged and fired up the enclosure using the USB interface. All seemed well. Both partitions showed up and all my data was accessible. I then unmounted the drive and tried it with the Firewire connection, just for kicks (my Gigabyte GA-7N400 Pro2 v.2 has Firewire onboard). XP detected it and mounted the volumes. I took this opportunity to run EasyRecovery Pro on the H: and see if I could recover some files I deleted by accident. When ERP presented me with a selection of drives, MLII's first partition was not on the list. I thought that rather odd, as I: was listed. I checked My Computer and lo and behold! H: was listed with no details. When I tried to access the drive I was greeted with "The disk in drive H is not formatted. Do you want to format it now?"

I removed the drive from the enclosure and popped it back into my box to confirm that the problem was not due to contoller malfunction. It is not. Since then I've used every free and demo software recovery and partition repair application I could find but nothing seems to be able to fix the partition.
A few insights:
• Active@ Partition Recovery v 3.0 (a DOS-based app) can see the damaged partition and lets me navigate the folders but it cannot access the data. I "fixed" the partition using APR but Windows still could not access H:, so I went back and unded the changes.
• Active Undelete is not able to find the partitions (which is strange considering it comes from the same minds that wrote Active Partition Recovery).
• Easy Recovery Pro was unable to see any files or folders on the drive, except in Raw Recovery mode, which is effectively useless for me in this case. Unusual because it's often the most capable recovery software around.
• Partition Magic 8 sees two partitions but lists drive H: as unformatted.
• I'm going to try the demo version of Active Uneraser and see if it can do anything.

For all this work I still don't know where the problem lies. Is it the drive's MBR? The partition table for drive H:?

I'm open to your suggestions.


Piyono
 

Mercutio

Fatwah on Western Digital
Joined
Jan 17, 2002
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Get Data Back NTFS has been pretty helpful to me as well. In this case though, you should be aware that every tool I've ever tried has a note buried in the README somewhere indicating that the drive you're working on should be an internal unit if at all possible.
 

Piyono

Storage is cool
Joined
Jan 25, 2002
Messages
599
Location
Toronto
Merc, I'm trying GetDataBack FAT. It's running now. I'll let you know how it fared.

I ran Active Partition Recovery again and took note of the startup message. I think it's rather telling:

"
LOGICAL DRIVE E
Detected file systems:
from Partition Table: FAT32
from boot sector: UNKNOWN
Get file system from boot sector? [Y/N]
"

If I select "Y" then APR is unable to see the file system. If I select "N" then APR sees it just fine. Could this mean that the boot sector of the drive is the culprit and not the partition table? And if so, is it possible to repair the boot sector without losing my existing partition structure?

Piyono
 

Mercutio

Fatwah on Western Digital
Joined
Jan 17, 2002
Messages
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I am omnipresent
As far as I'm aware a drive with nothing written to its boot sector should be readable regardless. Nope. You are missing one or more copies of your partition table.
 
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