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The original question: |
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I raise is because I brought an old U5 box, and noticed the box use a |
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standard IDE slot, so the only HDD I installed (ATA66) could not perform |
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maximum. Thus, I installed another Promise PDC 20262 IDE expension (or |
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extending, I am not sure of the English) card and moved the HDD to that |
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card. |
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|
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The problem is, as later pointed out by Keith M Wesolowski, U5 OBP could |
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not boot from external IDE device. This way I need to find a way to boot |
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up the box. Ferris McCormick helped me a lot in finding where is the |
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problem with his professional skill. |
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|
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The final way to solve the problem: I installed a small HDD onto the IDE |
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slot on the mother board, installed SILO on it, let it boot up the OS |
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installed on the external IDE slot. |
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|
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I tried to boot from floppy and failed. Here is how I failed in every |
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attempt: |
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|
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> After lots of work to shink kernel down to 1.2MB and teste the kernel |
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> is bootable, according to silo(1), these steps should create bootable |
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> floppy: |
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> |
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> genromfs -d directory/ -f device -a 512 -A 2048,/.. |
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> mount -t romfs device mountpoint |
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> silo -r mountpoint -i /boot/fd.b -F |
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> umount mountpoint |
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> |
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> This is what I did: (the first fdisk operation is not necessary |
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> according to my knowledge, but I did it just to make sure) |
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> |
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> root # fdisk /dev/fd0 |
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> |
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> Command (m for help): s |
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> Building a new sun disklabel. Changes will remain in memory only, |
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> until you decide to write them. After that, of course, the previous |
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> content won't be recoverable. |
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> |
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> |
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> Command (m for help): w |
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> The partition table has been altered! |
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> |
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> Calling ioctl() to re-read partition table. |
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> |
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> WARNING: Re-reading the partition table failed with error 22: Invalid |
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> argument. |
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> The kernel still uses the old table. |
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> The new table will be used at the next reboot. |
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> Syncing disks. |
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> |
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> root # genromfs -d /boot/ -f /dev/fd0 -a 512 -A 2048,/.. |
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> |
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> root # mount -t romfs /dev/fd0 /boot |
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> root # silo -r /boot -i /boot/fd.b -F |
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> silo.conf seems to be valid |
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> |
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> root # umount /boot |
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> |
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> And start the computer: |
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> |
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> [Enter OBP] |
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> ok boot floppy |
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> Boot device: /pci@1f,0/pci@1,1/ebus@1/fdthree File and args: |
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> Bad magic number in disk label |
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> Can't open disk label package |
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> |
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> Can't open boot device |
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|
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> I created a sparc boot floppy image using dd(1) with the image I got |
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> from: |
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> |
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> http://mirror.israel.net/pub/redhat/linux/4.2/en/os/sparc/images/boot.img |
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> |
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> This image, said should be able to boot, still produce the above error |
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> in OBP. I also googled around, lots of people are asking the same |
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> question (why cannot boot from floppy) and given no satisfying answer. |
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> Perhaps this is an UltraSparc natual problem. |
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-- |
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