◄Blk► ◄Chr► ◄OCR► This asks the driver whether the device contains removable media. DevReq0fRec Offset Size Contents ▀▀▀▀▀▀ ▀▀▀▀ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ +0 1 bLen 0dH (length of this request packet) +1 1 bUnitNo (not used) +2 1 bCmd 0fH (command code) +3 2 rStatus OUTPUT: Device Status Word must fill before exit +5H 8 res (reserved) 13 size of this record rStatus On exit, the driver must place a DevStatusWord here. Always set the Done bit (bit 8). If the disk in the drive is removable, clear the busy bit (bit 9). If the disk is non-removable, set bit 9. Notes: ■ Only drivers capable of device Open/Close-processing need support this request (see Device Attribute bit 11). ■ This is the driver "catch point" for DOS fn 4408H (IOCTL does drive use removable media?). See Also: Device Requests DevRequestHdrRec Installable Device Drivers -♦-