Public bug reported:
20.04.1 installer, Custom storage layout
On a device with 400+ GB free space and 4 existing GPT partitions the
option to add a GPT partition is disabled.
Apparently the logic cannot code with dis-contiguous partitions!
root@ubuntu-server:/# gdisk -l /dev/sda
GPT fdisk (gdisk) version 1.0.5
Partition table scan:
MBR: protective
BSD: not present
APM: not present
GPT: present
Found valid GPT with protective MBR; using GPT.
Disk /dev/sda: 1953459632 sectors, 931.5 GiB
Model: LOGICAL VOLUME
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): 05564500-64D5-40BE-A6EE-39476C575604
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 1953459598
Partitions will be aligned on 2048-sector boundaries
Total free space is 843898221 sectors (402.4 GiB)
Number Start (sector) End (sector) Size Code Name
1 2048 206847 100.0 MiB EF00 EFI system partition
2 206848 468991 128.0 MiB 0C01 Microsoft reserved ...
3 468992 133304319 63.3 GiB 0700 Basic data partition
4 977199104 1953458175 465.5 GiB 0700 Basic data partition
** Affects: subiquity (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "Unable to add a GPT partition"
https://bugs.launchpad.net/bugs/1901478/+attachment/5427149/+files/subiquity-20.04.1-GPT.png
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https://bugs.launchpad.net/bugs/1901478
Title:
Unable to add a GPT partition with 400+GB free space
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