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 1-255               DOS error
------------------------------------------------------------------------------
   Dec   Hex     Description
--------------------------------------------------------------------------------
   0     00h     No error
   1     01h     Invalid DOS function number
   2     02h     File not found
   3     03h     Path not found
   4     04h     Too many open files (no handles available)
   5     05h     Access denied
   6     06h     Invalid handle
   7     07h     Memory control block destroyed
   8     08h     Insufficient memory
   9     09h     Memory block address invalid
  10     0Ah     Invalid environment (usually >32K in length)
  11     0Bh     Invalid format
  12     0Ch     Invalid access code
  13     0Dh     Invalid data
  14     0Eh     Reserved
  15     0Fh     Invalid drive
  16     10h     Attempt to remove current directory
  17     11h     Not same device
  18     12h     No more files
  19     13h     Disk write protected
  20     14h     Unknown unit
  21     15h     Drive not ready
  22     16h     Unknown command
  23     17h     Data error (CRC)
  24     18h     Bad request structure length
  25     19h     Seek error
  26     1Ah     Unknown media type (non-DOS disk)
  27     1Bh     Sector not found
  28     1Ch     Printer out of paper
  29     1Dh     Write fault
  30     1Eh     Read fault
  31     1Fh     General failure
  32     20h     Sharing violation
  33     21h     Lock violation
  34     22h     Disk change invalid
  35     23h     FCB unavailable
  36     24h     Sharing buffer overflow
  37     25h     Code page mismatch                            (DOS 4+)
  38     26h     Cannot complete file operation (out of input) (DOS 4+)
  39     27h     Insufficient disk space                       (DOS 4+)
  40     28h     Reserved
  41     29h     Reserved
  42     2Ah     Reserved
  43     2Bh     Reserved
  44     2Ch     Reserved
  45     2Dh     Reserved
  46     2Eh     Reserved
  47     2Fh     Reserved
  48     30h     Reserved
  49     31h     Reserved
  50     32h     Network request not supported
  51     33h     Remote computer not listening
  52     34h     Duplicate name on network
  53     35h     Network name not found
  54     36h     Network busy
  55     37h     Network device no longer exists
  56     38h     Network BIOS command limit exceeded
  57     39h     Network adapter hardware error
  58     3Ah     Incorrect response from network
  59     3Bh     Unexpected network error
  60     3Ch     Incompatible remote adapter
  61     3Dh     Print queue full
  62     3Eh     Queue not full
  63     3Fh     Not enough space to print file
  64     40h     Network name was deleted
  65     41h     Network access denied
  66     42h     Network device type incorrect
  67     43h     Network name not found
  68     44h     Network name limit exceeded
  69     45h     Network BIOS session limit exceeded
  70     46h     Temporarily paused
  71     47h     Network request not accepted
  72     48h     Network print/disk redirection paused
  73     49h     Network software not installed
  74     4Ah     Unexpected adapter close
  75     4Bh     Password expired                              (LANtastic)
  76     4Ch     Login attempt invalid at this time            (LANtastic)
  77     4Dh     Disk limit exceeded on network node           (LANtastic)
  78     4Eh     Not logged in to network node                 (LANtastic)
  79     4Fh     Reserved
  80     50h     File exists
  81     51h     Reserved
  82     52h     Can not make directory
  83     53h     Fail on INT 24h
  84     54h     Too many redirections                         (DOS 3.3+)
  85     55h     Duplicate redirection                         (DOS 3.3+)
  86     56h     Invalid password                              (DOS 3.3+)
  87     57h     Invalid parameter                             (DOS 3.3+)
  88     58h     Network write fault                           (DOS 3.3+)
  89     59h     Function not supported on network             (DOS 4+)
  90     5Ah     Required system component not installed       (DOS 4+)
 100     64h     Unknown error                                 (MSCDEX)
 101     65h     Not ready                                     (MSCDEX)
 102     66h     EMS memory no longer valid                    (MSCDEX)
 103     67h     Not High Sierra or ISO-9660 format            (MSCDEX)
 104     68h     Door open                                     (MSCDEX)