160 Drive Number Error: The user specified the wrong
drive number.
161 Too Many OPEN Files: No sector buffer is
available.
162 Disk Full: No free sectors are available.
163 Unrecoverable System I/O Error: The DOS version
on disk may be damaged.
164 File Number Mismatch: The disk file may be
damaged.
165 File Name Error: The file specification has illegal
characters in it.
166 POINT Data Length Error: The second parameter
of the POINT statement is too large.
167 File Locked: The user tried to access a locked file
for purposes other than to read it.
168 Invalid Command: The command in a special
operation code is invalid.
169 Directory Full: The user has used all the open
space (64 file names) allotted for the directory.
170 File Not Found: The user tried to access a file that
doesn't exist in the diskette directory.
171 Invalid POINT: The user tried to POINT to a byte in
a file not opened for update.
172 Illegal Append: The user tried to use DOS II to
open a DOS I file for append. DOS II cannot append
to DOS I files. Using DOS II, copy the DOS I file to
a DOS II diskette.
173 Bad Sectors at Format Time: The disk drive found
bad sectors while it was formatting a diskette. Use
another diskette because a diskette with bad
sectors cannot be formatted. If this error occurs
with more than one diskette, the disk drive may
need repair.
1
IOCB refers to Input/Output Control Block. The device number is the same as the IOCB
number.
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