bob@csispt.UUCP (Bob Finch) (12/08/89)
How should a SCSI disk driver that supports removable media tell the Mac OS that the drive is hardware write protected? I've tried setting bit 7 in byte 0 of the flags that precede the drive queue element for my drive (IM IV page 181) in a VBL task when a disk is inserted just before doing a PostEvent to get it mounted. I've also tried responding to drvStsCode (csCode 8) Status calls with DrvSts record with writeProt bit 7 set (IM II page 215). Thanks in advance... -- Bob Finch bob%csispt.UUCP@unicorn.wwu.edu +1 (206) 671-6214
allanh@netcom.UUCP (Allen Hessenflow) (12/08/89)
In article <1989Dec7.202804.6903@csispt.UUCP>, bob@csispt.UUCP (Bob Finch) writes: > > How should a SCSI disk driver that supports removable media tell the > Mac OS that the drive is hardware write protected? > All you should need to do is exactly what you said you've done. When I first tried to implement write protection on a removable media device it didn't work because I only set the bit in the dqe but didn't respond to status calls at all. As soon as I implemented status calls everything worked. -- apple!netcom!allanh allanh@netcom.uucp