#: 7470 S10/OS9/6809 (CoCo)
    17-Oct-90  18:41:28
Sb: #7468-Hard Disk Defrag
Fm: Pete Lyall 76703,4230
To: J SILLIMAN 72355,1207

J -

Best bet is simple, but laborious:

1. backup the disk (use HDKIT, or equivalent)

2. format the drive again (logical is okay, but why not take the opportunity
   to freshly write track and sector headers).

3. restore the drive (again, HDKIT or equivalent).

Pete