When you run RDISK.EXE or RDISK.EXE /S, the following files are updated in the %SystemRoot%\Repair directory:

File Name Registry Hive Name
AUTOEXEC.NT
CONFIG.NT
DEFAULT._ HKEY_USERS\.Default
NTUSER.DA_ (NT V4.0 only)
SAM._ Portions of HKEY_LOCAL_MACHINE\SAM
SECURITY._ HKEY_LOCAL_MACHINE\Security
SETUP.LOG
software._ HKEY_LOCAL_MACHINE\Software
system._ HKEY_LOCAL_MACHINE\System

If the total space for these files exceeds the size of the floppy, you receive the subject message.

You can reduce the size of the SETUP.LOG file by removing file from the \[Files.WinNt\] section that do not begin with %SystemRoot%\System32 or equivalent. Make a backup first; i.e. SETUP.BAK. After the ERD is created, rename the \Repair\SETUP.BAK to \Repair\SETUP.LOG.

If you are running RDISK.EXE /S, the SAM contains 1K of data for each user account and ½K of data for each machine account. The SECURITY hive is even larger. You may have to forgo the /S option. You may even have to restore the origonal SAM and SECURITY from an older ERD. If you do, you must have at least one of the following to recover:

- Regback/Regrest from the Resource Kit
- ConfigSafe NT from http://www.jsiinc.com/catalog.htm
- A backup
- An alternate install of NT and to be safe, a copy of the %SystemRoot%\Repair directory