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On Mon, Oct 22, 2001 at 12:36:04PM +0100, Viktor Lakics wrote: |
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> Dear Hendrik, |
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> |
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> NOw I am confused. Do I need to have SCSI cdrom support in the kernel? I only |
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> have ide-scsi, scsi generic and ide-cd compiled as modules. I thought I only |
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> need SCSI cdrom support if I have a REAL scsi device... |
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> |
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> What is EXACTLY the minimum set of IDE and scsi option then what I need |
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> in the kernel in ordrt to use my cdrw to write and to use it as a cdrom as |
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> well (meaning mounting CDs and reading them)?! |
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|
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For CD-RW usage (With stuff like cdrecord and friends), and accessing the |
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CDROM, you'll need |
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1) sg or pg (sg for SCSI, and pg for parallel port) for the raw communication |
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to the CD-RW that cdrecord needs. These are the "Generic" devices. |
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2) sr_mod or pcd (sr_mod for SCSI, pcd for parallel port) |
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as well as the "standard" cdrom etc. for acessing it as a CDROM device. |
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|
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sr_mod & sg is under the SCSI config in the kernel, while pg & pcd are |
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somewhere under the parallel port stuff. |
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|
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However, you have a IDE CD-RW: |
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Now the IDE (Actually ATAPI) CD-RWs are making use of a SCSI-over-IDE |
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encapsulation. Thus the need for ide-scsi. You'll notice that when you |
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install the Adaptec/Nero etc. software on Windows, that they also installs a |
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SCSI (aspi I think) layer for comms to the CDRW. |
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|
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Now the config at boot time: |
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hdc=ide-scsi (I guess, machine @home :() |
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|
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This tells the IDE/ATAPI layer to NOT initialize this drive in the IDE |
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chain for things, but that it'll be handled as a SCSI device. |
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|
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Thus the need for modprobe ide-scsi to load the SCSI-over-IDE modules. |
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Then you'll have to modprobe sg for cdrecord to work, and lastly |
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modprobe sr_mod for this faked-SCSI CDROM (on the IDE/ATAPI bus). |
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|
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Hope this clears it, as I just wished the ATAPI/IDE/ATA standards died a |
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silent/quiet/quick/horrific/long-forgotten death ages ago, so that we could |
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all be using SCSI with it zillions of NICE(tm) features like tag-command-queues |
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etc. etc. etc. |
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|
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GReetz |
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HEndrik |
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|
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|
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> |
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> |
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> Appreciate you answer... |
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> |
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> Viktor |
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> |
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> Hendrik Visage <hvisage@×××××××××××.za> wrote: |
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> > On Mon, Oct 22, 2001 at 07:04:32AM +0100, Viktor Lakics wrote: |
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> > > Hi All, |
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> > > |
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> > > This is probably a user list question, I fighted it but I am running out |
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> of |
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> > > ideas. I |
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> > > compiled IDE cdrom support as module, and ide-scsi as module in the |
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> kernel. I |
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> > > |
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> > > have hdb=ide-scsi with grub. |
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> > > |
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> > > My modules are not loaded automatically, devfs is not generating cdroms |
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> nor |
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> > > scsi |
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> > > device (scsi dir is there, but empty). |
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> > > |
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> > > 1. How can I get module autoloading? (module.autoload does NOT work : no |
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> > > matter what I put there. modules are not loaded). I do not have for some |
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> > > reason |
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> > > modeles.conf in etc as well) |
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> > > |
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> > > 2. Even if I do modprobe ide-scsi, ide-cd, cdrom, although the respective |
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> > |
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> > The order should be modprobe ide-scsi, sr_mod |
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> > YOu HAVE compiled in SCSI CDROM support??? |
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> > |
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> > > modules |
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> > > are there, inserted, I cannot mount my cdrom. I could burn a CD, because |
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> the |
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> > > scsi |
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> > > generic driver is there (cdroms still not gnerated though), but when I try |
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> to |
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> > > mount |
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> > > a cd like: |
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> > > |
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> > > mount -t iso9660 /dev/sg0 /mnt/cdrom |
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> > > |
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> > > I get sg0 is not a block device. Now /dev/scd0 is not there in devfs, I |
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> tried |
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> > > |
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> > > symlink as well, no success at all... |
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> > > |
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> > > Fresh rc6-9 tbz2 install... |
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> > > |
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> > > |
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> > > Thanks for any ideas... |
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> > > |
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> > > Viktor |
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> > > |
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> > > |
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> > > |
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> > > |
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> > > ----Viktor Lakics---- |
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> > > |
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> > > Through the Internet: |
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> > > |
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> > > lakicsv@×××.net |
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> > > |
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> > > |
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> > > ____________________________________________________________________ |
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> > > Get free e-mail and a permanent address at http://www.amexmail.com/?A=1 |
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> > > |
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> > > _______________________________________________ |
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> > > gentoo-dev mailing list |
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> > > gentoo-dev@××××××××××.org |
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> > > http://cvs.gentoo.org/mailman/listinfo/gentoo-dev |
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> > |
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> > -- |
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> > ------------------------ |
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> > Hendrik Visage |
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> > hvisage@×××××××××××.za |
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> > |
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> > _______________________________________________ |
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> > gentoo-dev mailing list |
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> > gentoo-dev@××××××××××.org |
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> > http://cvs.gentoo.org/mailman/listinfo/gentoo-dev |
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> |
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> |
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> ----Viktor Lakics---- |
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> |
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> Through the Internet: |
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> |
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> lakicsv@×××.net |
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> |
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> |
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> ____________________________________________________________________ |
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> Get free e-mail and a permanent address at http://www.amexmail.com/?A=1 |
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> |
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> _______________________________________________ |
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> gentoo-dev mailing list |
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> gentoo-dev@××××××××××.org |
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> http://cvs.gentoo.org/mailman/listinfo/gentoo-dev |
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|
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-- |
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------------------------ |
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Hendrik Visage |
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hvisage@×××××××××××.za |