Tandy 1000 MS-DOS Reference Manual page 316

Chapter 14 / Problems and Error Messages
type refers to one of the following types of errors:
Bad call format
Bad command
Bad unit
Data
Disk
FCB unavailable
General failure
Invalid disk change
Lock violation
No paper
Non-DOS disk
Not ready
Read fault
Sector not found
Seek
Sharing violation
Write fault
Write protect
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R
action is either reading or writing.
device
is the equipment that is experiencing the difficulty, such
as drive (disk drive) or PRN (printer).
name
is the letter of the drive (if
device
is a drive) in which the
error occurred.
For example, if MS-DOS finds data on the diskette in Drive B
that it is unable
~o
read, it displays:
Data error readlng drive B
Abort, Retry, Ignore?
After displaying the error message, MS-DOS waits for you to
enter one of the following responses:
A
Abort. Terminate the program that was in process
and return to the MS-DOS system prompt.
Ignore. Ignore the error and continue the program or
command. If continuing requires further reads to the
same disk area, the error message is likely to recur.
Retry. Repeat the disk read. Give this response if you
have been able to correct the error.
To recover, press R to try again. If that fails, press A to cancel
the operation. Then, you can take steps to discover the cause of
the error.
.
Following are descriptions of the device error types MS-DOS can
display.
Bad call format
The device driver was passed an incorrect length request header.
Contact the dealer from whom you purchased the device driver.
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