FreeBSD-10.3-RELEASE-i386-memstick.img installer changes contents of USB flash drive
wblock at wonkity.com
Mon Oct 3 23:08:32 UTC 2016
On Tue, 4 Oct 2016, Ian Smith wrote:
> > I'd think you could just dd(1) the contents of the single installer disk
> > partition into a big-enough MBR partition. Repeat for each image, then use
> > boot0cfg.
> Sure, for old-style raw BSD images, but that won't work for images with:
> 1) PMBR, 2) primary GPT, 3) efifat partition, 4) gptboot partition then
> 5) the UFS partition - which is all we want to copy to a bootable BSD
> slice - then 6) 1M(??) swap. We need to use /boot/boot bootblocks for
> each slice; still, it may be easy to locate and dd just that partition
> out of the mdconfig'd image - or mount it and copy; some tests needed.
What is the difficulty? 1-4 are not needed for an MBR disk anyway.
The UFS partition is the same either way, and gpart can install the
bootcode that lives in the start of a UFS filesystem also.
It would be easier to not use boot0, which is not very powerful.
Syslinux or Grub can multiboot with a lot more options, although you do
need to make room for them.
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