When you issue the convert driveltr: /FS:NTFS command, at the next boot, the FAT partition specified will be converted to NTFS. Windows NT knows to perform the action by checking the BootExecute key at boot time. The key's normal contents:

autocheck autochk *

is replaced by

autoconv \DosDevices\driveltr: /FS:NTFS

To stop the conversion, use this NT registry hack to set the key to its normal string value.

Hive: HKEY_LOCAL_MACHINE
Key: SYSTEM\CurrentControlSet\Control\Session Manager
Name: BootExecute
Type: REG_MULTI_SZ
Value: autocheck autochk * normal setting

NTFS Tips:

Managing Shared Resources and Resource Security
Choosing Between FAT and NTFS
Web versus NTFS Permissions
NTFS Security, Part 2: Implementing NTFS Special Permissions on Your Web Site
Getting the Most from IIS Security
NTFS Permissions
Cancel an NTFS conversion
NT equivalents of NetWare Rights
Access NTFS from DOS, Win95 or Win98 using NTFSDOS driver
NTFS Last Access TimeStamp
xcopy - keep attributes
How To Remove Files with Reserved Names such as LPT1 or PRN
NTFS Metadata files
Disable NTs 8.3 aliases for LFNs under NTFS
Streams displays which NTFS files have alternate streams content
VolumeID changes NT and FAT volume IDs
Create a NTFS partition over 4GB during installation
Windows NT NTFS Directory Compression

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