Public bug reported:
According to https://wiki.archlinux.org/title/GRUB#BIOS_systems, it's
both legal and interesting to place the BIOS BOOT partition from sector
34 to sector 2047, as follows:
$ sudo sfdisk --no-act -f --label gpt /dev/sdb << EOF
start= 34, size=2013, name=bios, type=$(sfdisk --label
gpt -T | awk '{IGNORECASE = 1;} /bios boot/{print $1}')
start= 2048, size=12582912, name=swap, type=$(sfdisk --label
gpt -T | awk '{IGNORECASE = 1;} /linux swap/{print $1}')
EOF
The output is:
/dev/sdb1: Sector 34 already used.
Failed to add #1 partition: Numerical result out of range
Leaving.
It's a false error. As a workaround, users must omit the BIOS BOOT
partition then use gdisk to insert it manually. This was uncovered in
2015 and perhaps never reported to a bug tracker because it's still
broken. See https://www.spinics.net/lists/util-linux-ng/msg11253.html
** Affects: util-linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1929087
Title:
sfdisk refuses to write GPT table between sector 34 and 2047
Status in util-linux package in Ubuntu:
New
Bug description:
According to https://wiki.archlinux.org/title/GRUB#BIOS_systems, it's
both legal and interesting to place the BIOS BOOT partition from
sector 34 to sector 2047, as follows:
$ sudo sfdisk --no-act -f --label gpt /dev/sdb << EOF
start= 34, size=2013, name=bios, type=$(sfdisk
--label gpt -T | awk '{IGNORECASE = 1;} /bios boot/{print $1}')
start= 2048, size=12582912, name=swap, type=$(sfdisk
--label gpt -T | awk '{IGNORECASE = 1;} /linux swap/{print $1}')
EOF
The output is:
/dev/sdb1: Sector 34 already used.
Failed to add #1 partition: Numerical result out of range
Leaving.
It's a false error. As a workaround, users must omit the BIOS BOOT
partition then use gdisk to insert it manually. This was uncovered in
2015 and perhaps never reported to a bug tracker because it's still
broken. See https://www.spinics.net/lists/util-linux-ng/msg11253.html
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1929087/+subscriptions
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