Re: [gentoo-sparc] a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device

[Zhang Weiwu]

Ferris McCormick wrote:

> So you have two questions:
> 1.  Will Gentoo boot of the floppy?  And if so,
> 2.  Can you take enough out of the kernel & put it into modules
>     to fit the kernel + the boot loader onto a floppy?
>
> I am sure your situation is addressed somewhere, but I've never run
> across it.
>
> Good luck, keep trying, and come back with questions.  Eventually
> someone who knows the answer will get tired of reading my responses
> and will feed you better information.

I think I ran into new problems. After lots of work to shink kernel down 
to 1.2MB and teste the kernel is bootable, according to silo(1), these 
steps should create bootable floppy:

                genromfs -d directory/ -f device -a 512 -A 2048,/..
                mount -t romfs device mountpoint
                silo -r mountpoint -i /boot/fd.b -F
                umount mountpoint

This is what I did:

root # fdisk /dev/fd0

Command (m for help): s
Building a new sun disklabel. Changes will remain in memory only,
until you decide to write them. After that, of course, the previous
content won't be recoverable.


Command (m for help): w
The partition table has been altered!

Calling ioctl() to re-read partition table.

WARNING: Re-reading the partition table failed with error 22: Invalid 
argument.
The kernel still uses the old table.
The new table will be used at the next reboot.
Syncing disks.

root # genromfs -d /boot/ -f /dev/fd0 -a 512 -A 2048,/..

root # mount -t romfs /dev/fd0 /boot
root # silo -r /boot -i /boot/fd.b -F
silo.conf seems to be valid

root # umount /boot

And start the computer:

[Enter OBP]
ok boot floppy
Boot device: /pci@1f,0/pci@1,1/ebus@1/fdthree File and args:
Bad magic number in disk label
Can't open disk label package

Can't open boot device

So I failed to make a bootable floppy. What do I miss?

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