When you issue the convert driveltr: /FS:NTFS command, at the next
boot, the FAT partition specified will be converted to NTFS. 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, 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
Background
information: Registry Construction Steps
