Sarge netboot CD won't start on Enterprise 250

[Ron Murray <murrayr@dor.state.ma.us>]

This machine, I should state at the outset, is happily running sarge and 
has been for almost a year. I don't remember how I installed it; 
probably booted from a woody floppy and upgraded.

Since I'll soon have a couple more E250s available, I thought I'd try 
the new sarge netboot CD and see how it worked. Sadly, I can't get it to 
boot.

If I boot from the CD and type 'linux' at the SILO prompt, I get:

> 		  ...
> 
>    RAMDISK: compressed image found at block 0
>    Freeing initrd memory: 2970k freed
>    VFS: mount root (ext2 filesystem)
>    Mounted devfs on /dev
>    VFS: Mounted root (ext2 filesystem) <----- Second time?????
>    Trying to move old root to /initrd ... okay
>    Mounted devfs on /dev               <----- Second time?????
>    Setting up filesystem, please wait ...
>    Unimplemented SPARC system call 188
>    Unimplemented SPARC system call 188
>    Unimplemented SPARC system call 188
>    Unimplemented SPARC system call 188
>    Unimplemented SPARC system call 188
>    Unimplemented SPARC system call 188
>    Starting system log daemon: syslogd, klogd
>    Using /lib/modules/2.4.27-sparc64/kernel/drivers/usb/host/usb-uhci.o
>    Bus error
>    modprobe: failed to load module usb-uhci
>    Bus error
>    Bus error			(continues till we quit)

The machine gives a 'bus error' message about every second or so. Stop-A 
is the only solution here (apart from the power switch, that is). I've 
let it run for several minutes in the hope that it might actually be 
doing something, but it isn't.

Even stranger, if I type 'rescue' at the SILO prompt, I get:

> 		  ...
> 
>    RAMDISK: compressed image found at block 0
>    Freeing initrd memory: 2970k freed
>    VFS: mount root (ext2 filesystem)
>    Mounted devfs on /dev
>    Kernel panic: VFS: Unable to mount root fs on 00:00

    followed by a message to hit Stop-A to recover.


    I've experimented with command-line parameters, but nothing seems to 
help. Any suggestions?

Thanks,

  .....Ron

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