Personally, I'd go with the thumb drive solution. They're cheap in bulk and it's a simple fix. However, that doesn't answer your question.
Re rebooting directly from MBR I can't think of anything that runs completely out of the MBR. (Perhaps the original version of GRUB? It's been too long and I don't recall.) While GRUB2 looks for configs/menus in a boot partition, it is FOSS and you may be able to modify it to simply do a system reset. See https://www.gnu.org/software/grub/ -- Paul Beltrani On Fri, Oct 7, 2016 at 11:46 AM, Alex Aminoff <[email protected]> wrote: > > On 10/7/2016 11:02 AM, Dan Ritter wrote: > >> >> Can you install a tiny boot partition containing etherboot/gpxe >> (http://etherboot.org/wiki/howtos) which will then try to PXE >> boot indefinitely? It fits on a floppy or tiny USB, too. >> >> That would be a backup plan if we can not find something that fits in > just the MBR. The local HDs already have partitions on them, they could be > re-partitioned to create space for a small partition as you suggest, but > that would be a hassle. We have also thought of using a USB stick, but > those are unreliable and we would have to buy and configure 20-30 USB > sticks. > > > Can you alter the BIOS config to not boot off local disk? >> > > Unfortunately the BIOS does not re-try booting from the beginning after > trying all the options in the boot order. It gives you a screen that says > something like "no OS found, press any key to reboot". > > > _______________________________________________ > bblisa mailing list > [email protected] > http://www.bblisa.org/mailman/listinfo/bblisa >
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