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BIOS doesnt see HD's but can access with boot disk. HD data missing?

by Ghost Rider / April 8, 2004 4:05 AM PDT

I have a Dell XPS1000Br P3-1000 with 512MB, Two 40GB HD's DVD player and CDRW. Running Windows XP (FAT32). This has been the configuration for a few years and had operated fin with no problems, Until now. Last night when booting up my PC I received a Invalid Disk Error. When I checked the BIOS it did not recognize my HD?s however it did see both the DVD and CDRW drive. On a whim I rebooted with the boot disk and was able to see and explore both drives that the BIOS said where not there.
Data wise things are even stranger. The directory tree for the slave is intact and all data looks good. The primary HD is all screwed up. Scan disk recognizes the full drive volume, 40GB. However when I do a DIR listing the file structure is gone and only two empty directories exist, and no files. According to DOS there is only 2.5GB available on the drive, so it looks like my data is still there however it has been Hidden or encrypted in some way.

Both HD?s are connected to a Promise UTLRA 100 PCI card, and the CD drives are connected to the
Motherboards IDE controller. When I plug the HD?s into the Motherboard BIOS sees the drives, however
The data is still gone.

Any Ideas on what is going on and how to fix it?

Why doesn?t the BIOS see the HD?s attached to the ATA card, when I can navigate the drives from a Boot disk.

What happened to my Data?


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BIOS doesnt see HD's (that are connected to ATA cards.)
by R. Proffitt Forum moderator / April 8, 2004 5:52 AM PDT

That part is very normal. If the ATA card has a BIOS (most do), then that may show the drive.

As to the data, hard disk contents are very fragile. It's just temporary storage space and we keep what we can't lose on some other backup. With all the virus, parasites, trojans, power glitches and more, where your data goes may never be found.

You may want to try NTFS next time since it's a little more damage resistant. Not damage-proof, but I've seen it take some damage and recover.


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Re:BIOS doesnt see HD's (that are connected to ATA cards.)
by Ghost Rider / April 8, 2004 7:35 AM PDT

Since it appears that the data may still be there based upon the reported space availibe 2.5GB compared to the actual drive size 40.0GB are there any tools out there that could help me get to it.

I was prepared last night to reformat the drive and Fresh install XP with NTFS but I wanted to investigate other possiblities before I did the deed.

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Re:Re:BIOS doesnt see HD's (that are connected to ATA cards.)
by David Chan / April 8, 2004 12:32 PM PDT

If you have another PC then pull the HDDs and attach them to it and see if you can access the data.

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