Re: Bug: remounting CD-ROM drives does not lock/unlock drive

From: Jens Axboe (
Date: Mon Aug 28 2000 - 08:01:33 EST

On Sun, Aug 27 2000, Rene Mayrhofer wrote:
> > options cdrom lockdoor=0
> This has the same effect as doing a 'setcd -l0' before mounting the CD-ROM
> disk. But this way, it is never locked. I need to have the CD-ROM drive
> locked during normal operation (ejecting the root filesystem is not very
> nice :) ), but unlocked immediately before the reboot is done.
> I was unable to find a way to unlock the tray *after* the disk has been
> mounted. Is there any or do I need to patch the kernel for the Gibraltar
> project (other bootable CD-ROM projects will definitely need this too) ?

lockdoor=0 will indeed keep the tray unlocked, unless explicityly
locked. And I think this is what Erik means -- don't automatically
lock the door, but do it from your init scripts. Then doing an
unlock on ro remount is simple.

* Jens Axboe <>
* SuSE Labs
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