Can Format FAT, but not NTFS with 3.51

Hello. I've got an interesting problem.  I have two IDE drives and each were formatted with 4 500 meg NTFS partitions when installed with NT 3.51.  Everything worked great for several months.

Then, out of the blue, I was unable to access the partitions on the second disk at all.  I finally re-partitioned them using Disk Manager and tried to reformat.  When I do this it says "0K available" and marks the disk as "RAW".

But get this--I can format using FAT and it works fine.  Any ideas?  Thanks.
jon@inetnc.comAsked:
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isakCommented:
Each disk has only one partition, right?
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jon@inetnc.comAuthor Commented:
No, each disk has 4 500 meg partitions.
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bcookCommented:
It may be that the partition table is a little screwey.

If you can get hold of a Linux boot and root disk, boot these, and have a look at the partiotion table with it's FDISK.   NT sometimes makes weird overlapped partitions that defy most DOS/NT partitioning and formatting tools.

Linux boot/root disks are available on sunsite.unc.edu
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