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Re: boot multiple Gnu/Linux Distributions from one USB key

From: Vagrant Cascadian
Subject: Re: boot multiple Gnu/Linux Distributions from one USB key
Date: Tue, 12 Mar 2019 11:56:54 -0700

On 2019-03-12, Ricardo Wurmus wrote:
> gnuforever <address@hidden> writes:
>> For GuixSD, I came up with this configuration:
>> I used label instead of uuid.
>>     ## GUIXSD
>>     menuentry "GUIXSD - Gnu/Linux" {
>>         set isofile="/boot-isos/guixsd-install-0.16.0.x86_64-linux.iso"
>>         loopback loop (hd0,1)$isofile
>>         search --label --set GUIXSD_IMAGE
>>         linux
>> (loop)/gnu/store/0zajbn9q39yva4l0zzrcshlll8qikzba-linux-libre-4.19.6/bzImage9
>> --root=GUIXSD_IMAGE
>> --system=(loop)/gnu/store/l4hgd4l7acrqwi3imav9akcvv4sbj85j-system
>> --load=(loop)/gnu/store/l4hgd4l7acrqwi3imav9akcvv4sbj85j-system/boot
>>         initrd
>> (loop)/gnu/store/9nqaksx40zh5d6cg5rim3f3spy56bfb9-raw-initrd/initrd.cpio.gz
>>     }
>> It doesn't work. I get the following error message:
>> waiting for partition 'GUIXSD_IMAGE' to appear...
> Does a partition with this label exist?

>From the Guix initramfs you would need to run:

  losetup /path/to/file

If the image was in a partitioned loopback file:

  losetup --partscan /path/to/file

Then I suspect the labels would get populated. You may also need to add
losetup to the initramfs, since it probably isn't yet present.

I'm guessing you would also remove the (loop) from these arguments,
which are passed to the Guix initramfs, not loaded from grub:


live well,

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