2003-01-04 08:13:06

by Andy Johnson

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Subject: IDE-SCSI grabs too many drives

I have append="hdc=ide-scsi" in my lilo.conf file,
but when I modprobe ide-scsi, it grabs both the
CD-RW and the DVD-ROM:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: HP Model: CD-Writer+ 9100 Rev: 1.0c
Type: CD-ROM ANSI SCSI revision: 02
Vendor: RAITE Model: RDR-108H Rev: 1.7
Type: CD-ROM ANSI SCSI revision: 02

Shouldn't it just make only hdc a SCSI drive?

If I unload ide-scsi and modprobe ide-cd instead, I get this:

hdc: ATAPI 32X CD-ROM CD-R/RW drive, 4096kB Cache, UDMA(33)
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

Of course, I can't burn CD's with this configuration.

I want the CD-RW as a SCSI drive, and the DVD-ROM as an IDE drive.

For some reason, mplayer only works when the DVD-ROM is an IDE
device. If I try to use the SCSI equivalent, it hangs.

So, how do I get hdc as a SCSI drive, and hdd as an IDE drive?

Any and all help will be appreciated.

Andy Johnson


2003-01-05 00:07:19

by J.A. Magallon

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Subject: Re: IDE-SCSI grabs too many drives


On 2003.01.04 Andrew S. Johnson wrote:
> I have append="hdc=ide-scsi" in my lilo.conf file,
> but when I modprobe ide-scsi, it grabs both the
> CD-RW and the DVD-ROM:
>

I think the correct param is "hdc=scsi", with incorrect param and no
ide-cd loaded, probably ide-scsi grabs anything it can...

--
J.A. Magallon <[email protected]> \ Software is like sex:
werewolf.able.es \ It's better when it's free
Mandrake Linux release 9.1 (Cooker) for i586
Linux 2.4.21-pre2-jam2 (gcc 3.2.1 (Mandrake Linux 9.1 3.2.1-2mdk))

2003-01-05 04:43:57

by Andy Johnson

[permalink] [raw]
Subject: Re: IDE-SCSI grabs too many drives



J.A. Magallon wrote:
> On 2003.01.04 Andrew S. Johnson wrote:
>
>>I have append="hdc=ide-scsi" in my lilo.conf file,
>>but when I modprobe ide-scsi, it grabs both the
>>CD-RW and the DVD-ROM:
>>
>
>
> I think the correct param is "hdc=scsi", with incorrect param and no
> ide-cd loaded, probably ide-scsi grabs anything it can...
>

Actually, I guessed on my own, and this solves it:

append="hdc=ide-scsi hdd=ide-cd" in lilo.conf

In rc.modules:

/sbin/modprobe ide-scsi
/sbin/modprobe ide-cd

Gives this in dmesg:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: HP Model: CD-Writer+ 9100 Rev: 1.0c
Type: CD-ROM ANSI SCSI revision: 02
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

I don't actually know if the hdd=ide-cd does anything for the ide-cd
module, other than keep the ide-scsi module from grabbing it. Does
anyone know?

Thanks,

Andy Johnson

2003-01-05 08:20:17

by Andy Johnson

[permalink] [raw]
Subject: Re: IDE-SCSI grabs too many drives

J.A. Magallon wrote:
> On 2003.01.04 Andrew S. Johnson wrote:
>
>>I have append="hdc=ide-scsi" in my lilo.conf file,
>>but when I modprobe ide-scsi, it grabs both the
>>CD-RW and the DVD-ROM:
>>
>
>
> I think the correct param is "hdc=scsi", with incorrect param and no
> ide-cd loaded, probably ide-scsi grabs anything it can...
>

Actually, I guessed on my own, and this solves it:

append="hdc=ide-scsi hdd=ide-cd" in lilo.conf

In rc.modules:

/sbin/modprobe ide-scsi
/sbin/modprobe ide-cd

Gives this in dmesg:

SCSI subsystem driver Revision: 1.00
scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Vendor: HP Model: CD-Writer+ 9100 Rev: 1.0c
Type: CD-ROM ANSI SCSI revision: 02
hdd: ATAPI 40X DVD-ROM drive, 256kB Cache, UDMA(33)

I don't actually know if the hdd=ide-cd does anything for the ide-cd
module, other than keep the ide-scsi module from grabbing it.
Conversely, the ide-cd module only grabs hdd even when the ide-scsi
module is not loaded (making hdc free). So it appears to do something.

As it turns out, the latest version of cdrtools (2.0) supports ATAPI
drives directly. I tested this by burning an ISO, reading it back, and
comparing the md5sums. So the whole ide-scsi exersice looks to be
academic at this point.

Have fun,

Andy Johnson