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c.f. bug 424647
List Archive: gentoo-sparc
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From: Zhang Weiwu <zhangweiwu@...>
Subject: [SOLVED in a nasty way] Re: [gentoo-sparc] a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
Date: Wed, 01 Dec 2004 23:06:11 +0800
The original question:
I raise is because I brought an old U5 box, and noticed the box use a 
standard IDE slot, so the only HDD I installed (ATA66) could not perform 
maximum. Thus, I installed another Promise PDC 20262 IDE expension (or 
extending, I am not sure of the English) card and moved the HDD to that 
card.

The problem is, as later pointed out by Keith M Wesolowski, U5 OBP could 
not boot from external IDE device. This way I need to find a way to boot 
up the box. Ferris McCormick helped me a lot in finding where is the 
problem with his professional skill.

The final way to solve the problem: I installed a small HDD onto the IDE 
slot on the mother board, installed SILO on it, let it boot up the OS 
installed on the external IDE slot.

I tried to boot from floppy and failed. Here is how I failed in every 
attempt:

> 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: (the first fdisk operation is not necessary 
> according to my knowledge, but I did it just to make sure)
>
> 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

> I created a sparc boot floppy image using dd(1) with the image I got 
> from:
>
> http://mirror.israel.net/pub/redhat/linux/4.2/en/os/sparc/images/boot.img
>
> This image, said should be able to boot, still produce the above error 
> in OBP. I also googled around, lots of people are asking the same 
> question (why cannot boot from floppy) and given no satisfying answer. 
> Perhaps this is an UltraSparc natual problem.  




--
gentoo-sparc@g.o mailing list

Replies:
Re: [SOLVED in a nasty way] Re: [gentoo-sparc] a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Ferris McCormick
References:
a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Zhang Weiwu
Re: a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Ferris McCormick
Re: a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Zhang Weiwu
Re: a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Ferris McCormick
Re: a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Zhang Weiwu
Re: a question regarding using promise PDC 20262 ide card on Ultra 5 as boot device
-- Zhang Weiwu
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Updated Jun 17, 2009

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