Symptom
The computer's startup volume is named "/" instead of "Mac OS X" when Mac OS X is installed on a UFS volume. The volume's name may be changed, but that change is lost after a restart.
Solution
This is the expected behavior when installing onto a UFS volume. This does not affect the operation of Mac OS X. When referring to a file by a pathname, substitute "/" in place of the leading "/Mac OS X/."
To avoid this behavior, install Mac OS X on to a Mac OS Extended (HFS Plus) volume.
A future update to Mac OS X may allow for a customizable UFS volume name.