[ltp] swapping ultra-bay (slim) batter and dvdrom drive - alarm

[Luke Yelavich]

Hi
I asked this question a few months ago, and someone suggested looking into
the ACPI hotplug driver. I haven't had to swap anything yet, but I may give
it a try to simply find out whether I can remove my DVD-ROM drive from my
machine while the system is running.

Luke

On Mon, Jun 28, 2004 at 10:59:01PM EST, Reed Gregory wrote:
> I got this working on my T23 but it is not fully functional.  There is
> a script and program bundled with the hdparm source that works for
> this situation.  It uses the idectl command to basically poll the
> drive and unregister the IDE device when it is removed and re-register
> it when it is inserted.  The problem is that the kernel does really
> like the method and you end up with multiple entries in /proc/ide for
> the whole bus. For example, multiple ide1 entries in that directory
> for me.
> 
> There is also the issue that dma is disabled and non-functional once
> the drive has been re-registered.  So for watching dvds or burning cds
> this will noticably affect performance.  I also used ACPI and not APM
> if that might make a difference.
> 
> To try out the script and program you need to download the source to
> hdparm and look in the tar.gz file.  I think it is call ultrabayd.
> 
> Hope this helps.
> Reed
> 
> -- 
> Reed Gregory
> reed.gregory@gmail.com
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