DOS error Codes
Of the following error codes, only error codes 1-12 are returned in AX upon exit from interrupt 21 or 24; The rest are obtained by issuing the “get extended error” function call; see Int 0x21,0x59
Extended DOS Error Code
00 | No Error |
01 | Invalid function number |
02 | File not found |
03 | Path not found |
04 | Too many open files (no handles left) |
05 | Access denied |
06 | Invalid handle |
07 | Memory control blocks destroyed |
08 | Insufficient memory |
09 | Invalid memory block address |
0A | Invalid environment |
0B | Invalid format |
0C | Invalid access mode (open mode is invalid) |
0D | Invalid data |
0E | Reserved |
0F | Invalid drive specified |
10 | Attempt to remove current directory |
11 | Not same device |
12 | No more files |
13 | Attempt to write on a write-protected diskette |
14 | Unknown unit |
15 | Drive not ready |
16 | Unknown command |
17 | CRC error |
18 | Bad request structure length |
19 | Seek error |
1A | Unknown media type |
1B | Sector not found |
1C | Printer out of paper |
1D | Write fault |
1E | Read fault |
1F | General failure |
20 | Sharing violation |
21 | Lock violation |
22 | Invalid disk change |
23 | FCB unavailable |
24 | Sharing buffer overflow |
25 | Reserved |
26 | Unable to complete file operation (DOS 4.x) |
27-3 | 1 Reserved |
32 | Network request not supported |
33 | Remote computer not listening |
34 | Duplicate name on network |
35 | Network name not found |
36 | Network busy |
37 | Network device no longer exists |
38 | NetBIOS command limit exceeded |
39 | Network adapter error |
3A | Incorrect network response |
3B | Unexpected network error |
3C | Incompatible remote adapter |
3D | Print queue full |
3E | No space for print file |
3F | Print file deleted |
40 | Network name deleted |
41 | Access denied |
42 | Network device type incorrect |
43 | Network name not found |
44 | Network name limit exceeded |
45 | NetBIOS session limit exceeded |
46 | Temporarily paused |
47 | Network request not accepted |
48 | Print or disk redirection is paused |
49-4 | F Reserved |
50 | File already exists |
51 | Reserved |
52 | Cannot make directory entry |
53 | Fail on INT 24 |
54 | Too many redirections |
55 | Duplicate redirection |
56 | Invalid password |
57 | Invalid parameter |
58 | Network device fault |
59 | Function not supported by network (DOS 4.x) |
5A | Required system component not installed (DOS 4.x) |
DOS Error Code/Classes
Error | Classes |
01 | Out of resource, out of space, channel, etc |
02 | Temporary situation, not an error, ex: file lock |
03 | Authorization, permission denied |
04 | Internal, system detected internal error |
05 | Hardware failure, serious problem related to hardware |
06 | System failure, ex: invalid configuration |
07 | Application error, inconsistent request |
08 | Not found, file/item not found |
09 | Bad format, file/item in invalid format |
0A | Locked, file/item interlocked |
0B | Media failure, ECC/CRC error, wrong or bad disk |
0C | Already exists, collision with existing item |
0D | Unknown, classification doesn't exist or is inappropriate |
DOS Error Code/Action Codes
Error | Action Codes (in BL) |
01 | retry, attempt a few more times and re-prompt |
02 | delay retry, retry a few more times after a pause |
03 | re-enter input, prompt user to re-enter input |
04 | abort with cleanup, orderly abort and shutdown |
05 | immediate abort, exit immediately without cleanup |
06 | ignore error |
07 | user intervention, retry after user fixes the problem |
Locus
Error | Locus (in CH) |
01 | unknown |
02 | block device |
03 | network |
04 | serial device |
05 | memory |