On 10/02/16 11:53, Peer Janssen wrote:
> Goal: Upgrade a working soekris net4801 from OpenBSD 4.6 to 6.0.

good.

> First I copied the complete 256 MB SiliconDrive CF-Disk to a newer
> SanDisk 8 GB Ultra one and rebootet, which worked smoothly and fine.

well, probably don't want to use that 256MB CF now, but ...

> I took the bsd.rd from an OpenBSD 6.0 i386 machine:
> 
> # ls -l /bsd.rd
> -rw-r--r--  1 root  wheel  7173390 Sep 20 19:17 /bsd.rd
> # md5 /bsd.rd
> MD5 (/bsd.rd) = 191559b8c5907ca34c144462366b021a
> # dmesg
> OpenBSD 6.0 (GENERIC) #1917: Tue Jul 26 12:48:33 MDT 2016
>     dera...@i386.openbsd.org:/usr/src/sys/arch/i386/compile/GENERIC

note: this is NOT bsd.rd

> cpu0: Geode(TM) Integrated Processor by AMD PCS ("AuthenticAMD"
> 586-class) 499 MHz
> cpu0: FPU,DE,PSE,TSC,MSR,CX8,SEP,PGE,CMOV,CFLUSH,MMX,MMXX,3DNOW2,3DNOW
> 
> [snip]
> 
> put it in / of a working soekris net4801 with OpenBSD 4.6 in order to
> jump-upgrade the system, but it doesn't boot the 6.0 bsd.rd install image:

bzzzt.

you put the newer (install) KERNEL in with the very old boot loader
(/boot).  One of the things that changed was the serial console support.

Since you are changing your media and doing a wipe and reload, just use
the miniroot60.fs to overwrite the beginning of your 8G CF, and boot that.

(or netboot, or any of the other ways to bring up such a system)

Nick.

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