msos2.hlp (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
SYS0123
SYS0123
 
Explanation
 
The system does not accept characters displayed using the keyboard
combination ALT plus 0-32 or the following characters
 
  /  [ ] : |  <  >  +  ; =  .  ?  *  "
 
Action
 
Correct the filename or volume label and retry the command.