Radio Shack TRS-80 Model II Reference Manual page 117

r--. .
Utility Programs
Primary and Alternate Directories
The primary directories of the source and destination diskettes must be on the same
track.
The alternate directories may be on different tracks; in fact, the alternate directory
need not be present on either diskette. If the destination diskette does have an
alternate directory, it will be used as such, even if the source diskette has no
alternate directory. If the destination has no alternate directory, none will be
created, even if the source diskette has an alternate directory.
During the
BACKUP
process, the source diskette's primary directory will be used
unless it is found to be flawed. In this case, the alternate, if available, will be used.
Ifthe destination diskette contains an alternate directory on a track which is used for
data on the source diskette, the backup will be cancelled.
Other Messages and Error Conditions
This is not a comprehensive listing; self-explanatory messages are not included.
Source diskette ERROR
Only GOOD files can be copied
Continue anyway? (V/O)
TRSDOS
cannot copy the current file, due to a flaw in the diskette or some other
error. Type Y (ENTER) to continue with the next file; Q (ENTER) to cancel the backup.
If any of the following errors occurs, you should:
I. Recreate the steps which caused the problem and duplicate the error.
2. Call Radio Shack Customer Service for a system error report.
DUAL ALLOCATION
Two files contain overlapping space allocations.
ALLOCATED ON FLAWED TRACK
A file has space allocated on a flawed track.
ALLOCATION ERROR
There is a conflict between space allocations and the free space map.
153