Assembly Language Help (alang.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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
Int 21h Function 44h Subfunction 08h
 ◄Detail►                                    ◄Up► ◄Contents► ◄Index► ◄Back►
────────────────────────────────────────────────────────────────────────────
 
  Interrupt:   21h     Function:   44h     Subfunction:   08h
 
  Title:       IOCTL: Check if Block Device is Removable [Version 3.0+]
 
  Description:
 
     Checks whether the specified block device contains a removable
     storage medium, such as a floppy disk.
 
     Input                             Output
 
     AH = 44h                          If function successful
     AL = 08h                            Carry flag: clear
     BL = Drive number (0 = default,     AL = 00h (if medium is
          1 = A, 2 = B,...)                        removable)
                                            = 01h (if medium is not
                                                   removable)
 
                                       If function unsuccessful
                                         Carry flag: set
                                         AX = Error code (01h or 0Fh)
                                         See: ◄Error codes►
                                    -♦-