Operating System -- WINNT
Version -- WKST 4.0 (sp5)
Computer Make -- Fujitsu
Computer Model -- Lifebook 635T
Memory (Mb of RAM) -- 48
CPU Type -- I586
CPU Speed (MHz) -- 133
My NTFS partition became corrupted and I have searched for applications that can restore data from an unbootable partition (no backups available).
Disk Administrator now shows that on Disk 0 (1295M) I have two partitions:
1)- File type unknown, 1038M
2)- FAT, 258M
Using Partition Magic, it shows that partition 1 is actually formatted as HPFS?! How did this happen, at no time during this entire ordeal did I refomat the orig. NTFS partition as HPFS.
Partition Magic returns the error code when I ask for information on that "HPFS" partition: Error 1041.
From the Partition Magic Tech support page, I have provided the following information:
Date Created: August 17, 1998
Date Modified: August 17, 1998
Description: The error 1041- SuperBlk.ulSectsOnVol> Bs.bsHugeSects only occurs on HPFS partitions. Basically it indicates that the number of sectors reported in the SuperBlock disagrees with the number of sectors on thepartition. In simple terms it denotes an invalid volume size.
Solution: In most cases the data on the affected partition will have to be backed up, and the partition deleted and recreated.
Additional Information: The SuperBlock is comprised of a single sector situated at Logical Sector Number 16. Most of the data stored in this sector never changes. Important information is stored here such as the location of the Root Directory FNode, location of the Directory Band and where to find the sector listing the partition's disk-usage bitmap sectors. Information that can change includes the last time chkdsk /f was run on the partition, the last time an optimization operation was performed and the number of bad sectors.
From the Microsoft KB, I found this information:
The Super Block is located in logical sector 16 and contains a pointer to the FNODE of the root directory. One of the biggest dangers of using HPFS is that if the Super Block is lost or corrupted due to a bad sector, so are the contents of the partition, even if the rest of the drive is fine. It would be possible to recover the data on the drive by copying everything to another drive with a good sector 16 and rebuilding the Super Block. However, this is a very complex task.
(from setup.txt on winnt cd)
HPFS File Systems
Windows NT version 4.0 does not support the OS/2 File System (HPFS). You cannot access disks that are formatted with HPFS from Windows NT version 4.0. If you have a previous version of Windows NT installed on a disk formatted with HPFS, Setup cannot upgrade it to Windows NT version 4.0.
You can use the Convert.exe program supplied with previous versions of
Windows NT to convert disks formatted with HPFS to the Windows NT File
System (NTFS). Windows NT version 4.0 Convert.exe does not provide this
capability. Do not convert any disks you need to access when using other operating systems such as OS/2.
Convert.exe can convert only HPFS version 1.x drives smaller than 4
gigabytes (GB). It fails on HPFS 2.x drives (those HPFS drives larger than 4 GB).
Before I go searching for a machine running NT 3.51 or OS/2 and copying all my information to that drive, what can you tell me?
If I do end up loading all my information onto another drive, can you provide me with information on how to do this, since it is a 'very complex task'? Am I better off working with NT3.51 or OS/2 if I am going to try and convert and get as much data back as possible?
So far, I've come across OnTrack's Easy Recovery program.
I have also found some utils on www.sysinternals.com
that look promising but I want to get some feedback before I attempt to use them.
Are there other programs that will also do the same thing? Do you have any recommendations as to which are the best and why?
In terms of competence level, I am an NT administrator, so a complex technical procedure wouldn't deter me as long as it was clearly documented -- I'm just looking for an application to work with.
Any information you can provide is greatly appreciated.
(if you need any information from my system, please let me know)