sys/boot/boot0/boot0.S - r186598

[Tom Judge]

On 09/01/2011 04:38, Daniel Braniss wrote:
>> There was a post on the embedded list that suggested this work around:
>>     echo 'a 2' | fdisk -f /dev/stdin ad0
>>     boot0cfg -s 2 ad0
>>
>> There are 2 issues with this:
>> 1) It can't be done without setting kern.geom.debugflags to 0x10.
>> 2) It resulted in most/all commands resulting in the error message
>> "Device not configured" including the second command and 'shutdown -r now=
>> '.
>>
>> Both of which leave this really work around fairly broken.
> the problem is that boot0cfg -s does NOT update the boot block, it fails!
> the work around is:
> 	boot0cfg -s -t n dev
> then
> 	gpart set -a active -i n dev
>
> danny
>
Hi Danny,

The bug does not seem to be in boot0cfg as:

1) It succeeds to write the new configuration to the boot block every
time i have tried.
2) It does not touch the partition table at all only the mbr, so it was
never designed to change the active partition.

If this is not a bug in boot0 then its a bug in the man pages for
boot0cfg as it does make reference to having to change the active slice
to make this work.

Tom

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