GNU bug report logs - #35856
Unable to boot on iMac, likely because of UUIDs

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Francisco Gómez <espectalll <at> kydara.com>
To: bug-guix <at> gnu.org
Subject: Unable to boot on iMac, likely because of UUIDs
Date: Wed, 22 May 2019 11:10:00 +0000

When I have inserted a device recorded with a GuixSD image in my Late 
2009 iMac (EFI, not UEFI) during boot, the computer gets stuck in a 
loop and doesn't respond. I believe this is due to a lack of, or 
duplication, of UUIDs (not to be confused with PARTUUIDs) on some 
partitions, as manually assigning them allows my computer to properly 
detect the attached devices and boot from the GuixSD one (although not 
successfully).

> udisksctl loop-setup -rf guix-system-install-1.0.1.x86_64-linux.iso
Mapped file guix-system-install-1.0.1.x86_64-linux.iso as /dev/loop0.

> sudo blkid -o list | grep ^/dev/loop0 | cut -d" " -f1 | sort
/dev/loop0
/dev/loop0p1
/dev/loop0p2
/dev/loop0p3
/dev/loop0p4

> sudo blkid -s UUID | grep ^/dev/loop0
/dev/loop0: UUID="1970-01-01-19-49-46-83"
/dev/loop0p2: UUID="C920-B8AE"

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