I would try to get a manual for Trackcess or Super Utility Plus. Both of those should have indexes that document the TRS-DOS directory format. There were several articles in 80-Micro as well, that had to do with undeleting files using Super-Zap. Al From: Eric Smith <eric at brouhaha.com> So my question is, are there any published works documenting the TRS-DOS? file system on-disk format, especially the use of the HIT table, other? than "TRS-80 Disk and Other Mysteries" by H. C. Pennington?