This article was previously published under Q179144
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If you start Windows NT in a dual-boot environment with Windows 95,or Windows 98, use the Fdisk tool to delete a logical drive using theFile Allocation Table (FAT) file system, and then restart Windows NT, youmay no longer see logical drives that use the NT file system (NTFS) inDisk Administrator.
For example, this behavior could occur if you configure your computer todual-boot between Windows NT and Windows 95 with a primary FAT file systempartition as drive C. In Windows NT, you configure two logical drives:drive D using NTFS, and drive E using the FAT file system. When you runFdisk, you can view only the logical drive using the FAT file system(which is labeled drive D by Fdisk but is drive E in Windows NT). Whenyou attempt to delete drive D, you delete the NTFS drive instead.
Fdisk cannot recognize NTFS logical drives in an extended partition, andtherefore deletes the NTFS logical drive if it occurs before the logicaldrive using the FAT file system.
Use Disk Administrator to make changes to logical drives when you havelogical drives using both NTFS and the FAT file system. Fdisk is notsupported for use in this configuration.
Note that if you run Fdisk a second time, you can successfully delete thelogical drive using the FAT file system.
If a primary partition is set to NTFS, Fdisk recognizes the partition as anon-DOS partition in Windows 95, and recognizes the partition as NTFS inWindows 95 OEM Service Release 2 (OSR2) and in Windows 98.