FreeBSD-10.3-RELEASE-i386-memstick.img installer changes contents of USB flash drive
smithi at nimnet.asn.au
Tue Oct 4 15:10:53 UTC 2016
On Mon, 3 Oct 2016 17:00:25 -0600, Warren Block wrote:
> 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.
You're right, I'm probably over-thinking it. Any moment now 11.0 will
be out and I'll grab a memstick.img and dvd1.iso and play till it goes,
though I expect to hold my own upgrades to 10.3 for the time being.
> 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.
Of course you're right, but I think I can get by with 4 bootable images,
and I'd prefer doing it all with native tools whenever possible.
Thanks for all your help,
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