#: 3856 S10/Tandy CoCo
    27-May-90  08:06:28
Sb: #3845-ROGUE HELP HELP HELP HLP
Fm: James Jones 76257,562
To: Dotti Rhodes 76334,3212

Could you give more details--the obvious first thing to check is whether you've
write-protected the disk.  (No offense intended--just trying to be thorough.) 
Tell us what sequence of events you go through, particularly inserting or
removing disks and chd or chx commands.