Windows NT build 438 unknown partition

[WindowsNT369852147]

I'm having an error installing Windows NT 3.1 build 438.
I did this:
1. Boot from Windows 98 boot disk
2. lock
3. winnt /c
4. Boot from Windows NT setup disk
5. Reach this screen:

I really need help!
I can't delete the unknown partition and I used FAT16
What can I do?

[mrpijey]

Perhaps you should check the partition you're trying to install NT onto? And make sure it's not FAT32 formatted...

[Overdoze]

Yeah, if you formatted the disk with Windows 98 boot disk then it's FAT32, which NT 3.1 doesn't support (obviously).

[TheCollector1988]

Well, just format it with a MS-DOS (that is previous to win95's release) boot disk, like from 5.x or 6.x.

[windows_dn]

I'm having an error installing Windows NT 3.1 build 438.
I did this:
1. Boot from Windows 98 boot disk
2. lock
3. winnt /c
4. Boot from Windows NT setup disk
5. Reach this screen:

I really need help!
I can't delete the unknown partition and I used FAT16
What can I do?

Don't use any boot disk newer than Windows 95.
Also. don't use any colors on post except to highlight something.