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OpenBSD Installation and Upgrading Installing and upgrading OpenBSD.

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Old 30th July 2015
acampbell acampbell is offline
Real Name: Anthony Campbell
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Thanks very much for your helpful reply. Yes, it worked, with slight modification. At first I could only mount the partitions read-only, which of course prevented installboot from writing the mbr. I followed the suggestion on the screen to run fsck and then it worked.

I'd seen Google references to reinstalling the PBR but I didn't know how to do it.
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Old 30th July 2015
ocicat ocicat is offline
Join Date: Apr 2008
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Originally Posted by acampbell
I'd seen Google references to reinstalling the PBR but I didn't know how to do it.
This thread has been separated from the following:


...as it takes discussion into a new topic.

The partition boot record (PBR) is needed when setting up a multibooting environment. The project's official FAQ covers this subject in Section 4.9. As cautioned there, the command:

# dd if=/dev/rsd0a of=openbsd.pbr bs=512 count=1

...may very well not be the correct device node since sd0 may not be the node used on your system. Use of disklabel(8) may help clarify this, & if you have further questions, please feel free asking them in this thread.
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