Are you planning on upgrading your NT 4 system to Windows 2000? Well, here's something to keep in mind:
If you upgrade a computer running Windows NT 4.0 with the Windows 2000 CD-ROM and you choose to convert the drive to NTFS, the drive may not be converted. This problem only occurs on systems that have been created using the System Preparation Tool for Windows NT 4.0 (Sysprep).
There is no true "fix" for this, more like a manual override. To get all of the information, check out the article at the following link:
Have you been affected by this or any of the other bugs that Swynk has listed? Have you been affected by bugs that we have not discussed?