Text 9172, 95 rader
Skriven 2007-01-31 23:49:00 av Paul Rogers (1:105/360.0)
     Kommentar till en text av Maurice Kinal
Ärende: Ide Cdrom & Scsi
========================
 MK> Maybe.  Is the bios set to boot to CD first?  Also if you plan to
 MK> actually  boot a kernel off an ide cd-rom then the kernel on there

No, not the problem I'm trying to solve.  I did try setting the
BIOS to try the CDROM first in order to see if that would cause
it to recognize the CD is there, to no effect.  So I reset it.
This is an installation floppy.  Its function is to give me an
environment I can install my version of Linux from.  It needs to
be able to get 350MB of tarballs off the CDROM.

 MK> better have ide cdd-rom capabilities built right in and not
 MK> modular.  Same could be said about sata and usb drives.  If

I really do want it to be modular.  I need it to be adaptable to
a wide variety of configurations.  That means SCSI or IDE, those
are easy.  I'm externalizing the modules because I can't predict
what options might be necessary and I don't to have to modify
the content of the initrd.  Building it in might be easier in
some ways, but less adaptable for a tiny initrd.

 MK> those two are not the issue(s) then I'd check the syslinux
 MK> configuration and make sure there isn't an error there.

No, I'm not going to mess with sata or usb or an iso- until I
get this floppy system sorted.  One step at a time!

 PR> CONFIG_IDE=m
 MK> Should be built in if you plan to boot from ide.

But I'm not!

 PR> CONFIG_BLK_DEV_IDE=m
 MK> Build it in.
 PR> CONFIG_BLK_DEV_IDEDISK=m
 MK> Build it in.
 PR> CONFIG_BLK_DEV_IDECD=m
 MK> Build it in.

I'm going to install on SCSI too.  I don't want to waste the
space in the kernel.

 PR> # CONFIG_BLK_DEV_IDETAPE is not set
 PR> CONFIG_BLK_DEV_IDEFLOPPY=m
 MK> Just say 'no'.  <BEG>

If & when I rebuild the kernel.  That's one I don't think I'll
need to support for installation.  For now I'm going to use the
Bering kernel.

 PR> CONFIG_BLK_DEV_IDESCSI=m
 MK> This one can stay modular.  The only time you'll need it is
 MK> with CD burners and it is doubtful you'll ever need it on
 MK> bootup.

That will go too if I recompile.  This is an installation
floppy!

 PR> # CONFIG_IDE_TASK_IOCTL is not set
 MK> Set it.

What's it do?

 PR> So all the IDE support is modules.
 MK> Fine if you never plan booting from any ide disk/device.

BINGO!!!  Boot from floppy, partition/format [hs]d, copy
tarballs from CDROM to [hs]d, start cloning script.

 MK> If the kernel is on a scsi device and the / is on a ide
 MK> channel then it'll work.  If the kernel is on an ide device
 MK> then it likely won't no matter what you tell lilo.

No, no, no.

 MK> I doubt that will work if the kernel is on the device and
 MK> doesn't already know hos to handle that device.  It might
 MK> but I wouldn't bet the farm on it.  I know that when
 MK> booting usb disks I require the kernel on there to already
 MK> understand usb disks, hubs and a basic protocol or it won't
 MK> boot.

It boots fine from the floppy.  If it's a straight IDE system,
the initrd finds both hard drives & CDROMS.  If it's straight
SCSI, it finds them both too.  But I've got an IBM z-system
sitting here that does this too, UW-SCSI hard drive & IDE CDROM.

Paul Rogers, paulgrogers@yahoo.com                       -o)
http://www.angelfire.com/or/paulrogers                   /\\
Rogers' Second Law: Everything you do communicates.     _\_V

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