If you use Services For Unix 2.2 or 3.0, you may find that you cannot use names like JSI.TXT, JSI.txt, and jsi.txt in the same folder.

Windows NT-based computers are case-preserving but NOT case-sensitive.

To support SFU, Windows XP allows you to change the default behavior for non-Win32 sub-systems.

NOTE: If you turn on case-sensitivity and subsequently remove SFU, the uninstall restores the case-insensitive behavior of non-Win32 sub-systems.

After installing one of these sub-systems, you can turn on case-sensitivity:

1. Copy / Paste the following to a SFU_Case.reg file:

REGEDIT4

\[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\kernel\]
"obcaseinsensitive"=dword:00000000

2. Merge the SFU_Case.reg file with your registry, or run regedit /s SFU_Case.reg.

3. Shutdown and restart Windows XP.