On Sat, 04 Aug 2012 03:10:52 -0400 Thomas Mueller <muelle...@insightbb.com> wrote:
> > On Fri, Aug 3, 2012 at 3:09 PM, Torfinn Ingolfsen > > <torfinn.ingolf...@getmail.no> wrote: > > > Just a short update on this machine (Acer Aspire X1470) and the GPT / > > > UEFI situation. > > > > Today I set up another partition, EFI system partition. The partyitions > > > now looks like this: > > > root@kg-vm2# gpart show ada0 > > > => 34 250069613 ada0 GPT (119G) > > > 34 128 1 freebsd-boot (64k) > > > 162 119537664 2 freebsd-ufs (57G) > > > 119537826 8388608 3 freebsd-swap (4.0G) > > > 127926434 121634816 4 freebsd-ufs (58G) > > > 249561250 204800 5 efi (100M) > > > 249766050 303597 - free - (148M) > > > > I formatted the partition like this: > > > root@kg-vm2# newfs_msdos -F32 /dev/ada0p5 > > > newfs_msdos: trim 50 sectors to adjust to a multiple of 63 > > > /dev/ada0p5: 204512 sectors in 12782 FAT32 clusters (8192 bytes/cluster) > > > BytesPerSec=512 SecPerClust=16 ResSectors=32 FATs=2 Media=0xf0 > > > SecPerTrack=63 Heads=16 HiddenSecs=0 HugeSectors=204750 FATsecs=100 > > > RootCluster=2 FSInfo=1 > > +Backup=2 > > > > I have tried putting an EFI shell on it (I got the idea from this[1] > > > page, I have tried both the 1.0 and 2.0 x64 shell), like this: > > > root@kg-vm2# mount -t msdosfs /dev/ada0p5 /mnt > > > root@kg-vm2# ls -l /mnt > > > total 848 > > > drwxr-xr-x 1 root wheel 8192 Aug 3 14:30 EFI > > > drwxr-xr-x 1 root wheel 8192 Aug 3 16:21 boot > > > -rwxr-xr-x 1 root wheel 847232 Aug 3 14:56 shellx64.efi > > > root@kg-vm2# ls -l /mnt/boot > > > total 760 > > > -rwxr-xr-x 1 root wheel 771072 Aug 3 16:23 bootx64.efi > > > root@kg-vm2# ls -l /mnt/EFI > > > total 16 > > > drwxr-xr-x 1 root wheel 8192 Aug 3 14:30 FreeBSD > > > drwxr-xr-x 1 root wheel 8192 Aug 3 15:06 boot > > > root@kg-vm2# ls -l /mnt/EFI/boot > > > total 760 > > > -rwxr-xr-x 1 root wheel 771072 Aug 3 15:29 bootx64.efi > > > > but no dice - it is not working, it still prints "ERROR: No boot disk has > > > been detected or the disk has failed." > > > when I try to boot from this disk. > > > How do I figure out where this UEFI firmware that Acer has put in this > > > machine is getting it's boot manager and or boot loader from? > > > I tried running 'strings -f' on the BIOS file (sorry, UEFI firmware), > > > that got me all the EFI error messages, but nothing useful. > > > Googling didn't help either. > > > > References: > > > 1) > > > https://wiki.archlinux.org/index.php/Unified_Extensible_Firmware_Interface > > > It's not clear from your message, but did you use the gpart bootcode > > command to write the protective MBR and the gptboot code as documented > > in the gpart(8) man page? > > -- > > R. Kevin Oberman, Network Engineer > > E-mail: kob6...@gmail.com > > The gpart bootcode command is quite apart from and unrelated to (as far as I > can tell) the EFI partition. Yes, this is what I have found out too. > I think the EFI partition is supposed to be the first partition on a > GPT-partitioned disk. This is not required by the specification as far as I can tell, but there are writings on the net saying that some implementations requires this (MS Win7 for example). > I have installed FreeBSD to a USB stick, GPT-partitioned with three > partitions: boot, root and swap. FWIW, I also use GPT-partitoned disks on many of my other machines; they work fine. It is (so far) only this machine which has this problem. > > EFI partition is to allow sharing a hard drive with multiple OS installations. The EFI system partition is also the place where (U)EFI firmwae will look for boot loaders, in order to load operating systems. YMMV. -- Torfinn Ingolfsen <torfinn.ingolf...@getmail.no> _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
