[Live-demo] UEFI Notes Misc

[Cameron Shorter]

Following up on IRC discussion last week.

My initial attempts to get a USB image created from a Mac were 
unsuccessful. I was trying to create a bootable image using unetbootin 
(as recommended from the Ubuntu website), but this didn't work.

I won't have time to look into this much deeper for a while.

Based on email thread below, it sounds like someone else has progressed 
further than me.

Cheers, Cameron


On 10/1/17 9:14 am, Brian M Hamlin wrote:
> fwd msg:
> -----------
> I am not a reader of this group but I was asked by someone who does 
> read it (Brian ed.) whether I could help with booting the osgeo iso on 
> UEFI machines.
>
> I made some experiments. The following is a summary that I hope will 
> be useful.
>
> references:
> http://askubuntu.com/questions/395879/how-to-create-uefi-only-bootable-usb-live-media
> this is the most relevant
>
> https://ubuntuforums.org/showthread.php?t=2276498
> Thread: How to Create a EFI/UEFI GRUB2 Multiboot USB drive to boot ISO 
> images
>
> https://sourceforge.net/p/unetbootin/wiki/howitworks/
>
> I tried unetbootin. Almost worked but not quite.
> copying iso as file system using dd ; not quite.
>
> ISO loopback method
>
> # I use debian. I assume here that /proc/partitions
> # shows your usb stick as /dev/sdb
> sudo apt install grub-efi-amd64-bin  gdisk grub
> sudo sgdisk --zap-all /dev/sdb  # I like zap-all , it gives me a good 
> feeling.
> # Remove usb drive and reinsert it to guarantee the kernel registers 
> the change.
> sudo sudo sgdisk --new=1:0:0 --typecode=1:ef00 /dev/sdb
> sudo mkfs.vfat -F32 -n GRUB2EFI /dev/sdb1
> # Now you have formated fat32 drive using gpt. Check with gparted.
>
> # mount it:
> sudo mount -t vfat /dev/sdb1 /mnt
>
> # At this point you might try doing as suggested by
> # https://ubuntuforums.org/showthread.php?t=2276498
> # but I had more promising results from
> # 
> askubuntu.com/questions/395879/how-to-create-uefi-only-bootable-usb-live-media 
> <http://askubuntu.com/questions/395879/how-to-create-uefi-only-bootable-usb-live-media>
> # which I follow below.
>
> # create a grub-image:
> grub-mkimage -o bootx64.efi -p /EFI/BOOT -O x86_64-efi \
>  fat iso9660 part_gpt part_msdos \
>  normal boot linux configfile loopback chain \
>  efifwsetup efi_gop efi_uga \
>  ls search search_label search_fs_uuid search_fs_file \
>  gfxterm gfxterm_background gfxterm_menu test all_video loadenv \
>  exfat ext2 ntfs btrfs hfsplus udf
> # This creates the file "bootx64.efi".
> # I find this command nonintuitive.
>
> # Write the following to "grub.cfg"
>
> set timeout=13
> set color_highlight=black/light-magenta
>
> menuentry 'Boot osgeo-live-10.5alpha1-amd64 from ISO' {
>         set isofile="/EFI/BOOT/ubuntu-14.04.2-desktop-amd64.iso"
> loopback loop $isofile
>         linux (loop)/casper/vmlinuz.efi boot=casper 
> iso-scan/filename=$isofile noprompt noeject  splash --
>         initrd (loop)/casper/initrd.lz
> }
> # options like "quiet persistent" may be added to options above..
> # Write files to usb drive thusly:
> /mnt/EFI
> /mntb/EFI/BOOT
> /mntb/EFI/BOOT/bootx64.efi
> /mntb/EFI/BOOT/grub.cfg
> /mntb/EFI/BOOT/osgeo-live-10.5alpha1-amd64.iso
>
> I tried such a usb drive on a MacBook which I was told was UEFI
>
> I got grub menu, it started loading the kernel. After a few score
> lines of boot-up output messages it hangs, "loading nouveau.fb"
> presumably that is a problem in the iso.
>
> ---
> Brian M Hamlin
> OSGeo California Chapter
> blog.light42.com
>
>
>
> _______________________________________________
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> Live-demo at lists.osgeo.org
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> http://live.osgeo.org
> http://wiki.osgeo.org/wiki/Live_GIS_Disc

-- 
Cameron Shorter
M +61 419 142 254

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