Has invalid allocation unit, file truncated
Cause: CHKDSK. The file name preceding this message means that the file contains an invalid pointer to the
Action: Use the /f switch to truncate the file at the last valid data block. No corrective action occurs if CHKDSK
is processed without the /f switch.
Help not available for this command
Cause: HELP. A command was not typed correctly or no help exists for command typed.
Action: Type the correct command name or refer to the commands in the PC DOS 7 Command Reference for
HMA not available: loading DOS low
Cause: DOS. Your CONFIG.SYS contains the line DOS=HIGH, but DOS cannot load itself into high memory because
none is available. This could occur if your CONFIG.SYS does not contain the line DEVICE=HIMEM.SYS.
Action: Add the DEVICE=HIMEM.SYS statement to your CONFIG.SYS file..