9.1 install wipes out gpart boot blocks?
Warren Block
wblock at wonkity.com
Thu Jan 31 00:20:35 UTC 2013
On Wed, 30 Jan 2013, Gary Aitken wrote:
> I used gpart to set up a new disk,
> then went through a 9.1 install.
> Everything seemed to go fine, but when time came to boot the new drive,
> it wouldn't boot.
What did it say?
> When doing the 9.1 install,
> I selected the disk and had to assign the partitions to the various filesystems.
> AFIK, I did not otherwise modify the filesystems.
>
> Does the 9.1 install process trash the boot areas?
>
> My gpart setup was:
>
> clean up (delete) the original partitions
> gpart destroy ada3
These two steps can be replaced with
gpart destroy -F ada3
> gpart create -s GPT ada3
> gpart bootcode -b /boot/pmbr ada3
> gpart add -t freebsd-boot -i 1 -s 512K -l gptboot ada3
> gpart bootcode -p /boot/gptboot -i 1 ada3
I do the bootcode in one step:
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 ada3
> gpart add -t freebsd-ufs -a 4K -b 1M -s 4G -i 2 -l fbsdroot ada3 # /
> gpart add -t freebsd-swap -a 4K -s 2G -i 3 -l fbsdswap ada3 # swap
> gpart add -t freebsd-ufs -a 4K -s 2G -i 4 -l fbsdvar ada3 # /var
> gpart add -t freebsd-ufs -a 4K -s 2G -i 5 -l fbsdtmp ada3 # /tmp
> gpart add -t freebsd-ufs -a 4K -i 6 -l fbsdusr ada3 # /usr
It's not necessary to use partition numbers with "add", gpart will just
use the next one available.
Here are my notes:
http://www.wonkity.com/~wblock/docs/html/disksetup.html
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