On 24 Apr, Glen Barber wrote: > On Thu, Apr 24, 2014 at 07:12:10PM -0700, Nathan Whitehorn wrote: >> On 04/24/14 18:38, Glen Barber wrote: >> >Author: gjb >> >Date: Fri Apr 25 01:38:57 2014 >> >New Revision: 264907 >> >URL: http://svnweb.freebsd.org/changeset/base/264907 >> > >> >Log: >> > Refactor make-memstick.sh to avoid creating the 'dangerously >> > dedicated' partition scheme, reported to cause the memstick.img >> > to fail to boot. >> > Similar to how make-memstick.sh worked on stable/8, use makefs(8) >> > to create the actual filesystem. Then calculate the size of the >> > resulting image file, create the GPT partition scheme, then dd(1) >> > the filesystem created with makefs(8) to the freebsd-ufs GPT >> > partition. >> > This was tested on a known-working machine[1] for regression, and >> > a known-not-working machine[2] to ensure the boot issue has been >> > resolved. >> > >> >> GPT may not be the best choice here. On a number of, in particular, Lenovo >> hardware, the BIOS will unconditionally boot with EFI from GPT media. I'm >> not sure we want to just swap the set of machines on which this will not >> boot. It probably needs to be nested MBR (or straight MBR -- I forget if >> that works) until the boot media work with EFI (which should be soon on >> -CURRENT). > > Noted. The thing here is that I want to get an EFI GPT partition on the > image eventually, which unless I'm missing something obvious, we cannot > mix GPT and MBR. > > I don't particularly like swapping which machines boot with this hack. > Maybe it's time to do a MBR stick for "legacy" boot, and the GPT stick > for UEFI and/or "fails-to-boot-DD" case?
I've got a fairly recent Gigabyte motherboard that refused to boot an Ultimate Boot CD memstick which uses MBR. I found out that I was was able to boot and install from a 'dangerously dedicated' FreeBSD 9.x memstick. Given that clue, I built a 'dangerously dedicated' Ultimate Boot CD memstick, which worked just fine. _______________________________________________ svn-src-head@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
