Le 2014-03-07 11:21, Stuart Henderson a écrit :
On 2014/03/07 11:04, Jean-Philippe Luiggi wrote:
Hi everybody,
I follow "-current" for several years but recently a thing puzzles me.
My "x200" is a dual-boot system ("Seven"/OpenBSD "-current") and since (I
think) the
"amd64/i386 installboot" change, each time I upgrade via "bsd.rd", I have to generate a new
"openbsd.pbr" and copy it to "Seven".
If I miss that, I get an "ERR M" and can't go further.
First I was thinking about changes but I checked code and last modification on
boot(8) was made 2 weeks ago (I did 2 updates since it).
I used that setup for several years without any need to do that, what do I
miss here, is it now normal ?
Regards,
Jean-Philippe.
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The location of /boot (second-stage boot loader) is recorded in the
pbr so the 1st-stage can find it.
With the old method of cp + /usr/mdec/installboot, though it wasn't
guaranteed, /boot tended to stay in the same place on disk most of the
time:
# cp boot /; ./installboot -v /boot ./biosboot sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2344
# cp boot /; ./installboot -v /boot ./biosboot sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2344
# cp boot /; ./installboot -v /boot ./biosboot sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2344
# cp boot /; ./installboot -v /boot ./biosboot sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2344
Whereas new installboot tends to shift it around:
# installboot -v sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2344
# installboot -v sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 48, offset 16168
# installboot -v sd1 2>&1 | grep shift
fs block shift 2; part offset 64; inode block 56, offset 2472
Meaning that the pbr must be updated with the new location.
Hi Stuart,
This is pretty clear, thanks a lot for explaining that. :)
Regards,
Jean-Philippe
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