Function 4408h (68-8)    IOCTL: Is Device Removable?                  DOS 3.0

Indicates whether or not a device has removable media.

On entry:      AH         44h
AL         08h
BL         Drive number (0=default, 1=A, etc.)

Returns:       AX         00h     If device is removable
01h     If device is fixed
0Fh     If invalid drive specified
Error code, if CF set

Error codes:   1          For network devices

                                                                          

This subfunction (DOS 3.0 and later only) indicates whether or not a
device has removable media (such as a floppy disk or a removable
cartridge hard disk). A value of 00h in AX means the device is
removable; a value of 01h means it is fixed. AX returns an error code
of 0Fh if an invalid drive has been specified in BL.

See also: 44h

4408h (68-8) IOCTL: Is Device Removable? >= DOS 3.0