Comment 16 for bug 1895329

The first test results from the current daily Ubuntu Groovy iso file

$ ls -l groovy-desktop-amd64.iso
-rw------- 1 sudodus sudodus 2936969216 okt 9 21:15 groovy-desktop-amd64.iso

$ md5sum groovy-desktop-amd64.iso
00cbcce8855c00dd2231077e3a01aebc groovy-desktop-amd64.iso

indicate that that squashing bug #1886148 did also squash bug #1895329, but now there is another 3rd partition, and we should look for a 4th partition.

sudodus@bionic64 /media/multimed-2/test/ubuntu $ sudo kpartx -av groovy-desktop-amd64.iso
add map loop0p1 (253:0): 0 5725588 linear 7:0 64
add map loop0p2 (253:1): 0 9952 linear 7:0 5725652
add map loop0p3 (253:2): 0 600 linear 7:0 5735604

sudodus@bionic64 /media/multimed-2/test/ubuntu $ lsblk -f /dev/loop0
NAME FSTYPE LABEL UUID MOUNTPOINT
loop0 iso9660 Ubuntu 20.10 amd64 2020-10-09-21-15-31-00
├─loop0p1 iso9660 Ubuntu 20.10 amd64 2020-10-09-21-15-31-00
├─loop0p2 vfat ESP 6508-0C9E
└─loop0p3

sudodus@bionic64 /media/multimed-2/test/ubuntu $ sudo kpartx -d groovy-desktop-amd64.iso
loop deleted : /dev/loop0

After booting, there is a 'writable' partition.

sudodus@bionic64 /media/multimed-2/test/ubuntu $ lsblk -f /dev/sdc
NAME FSTYPE LABEL UUID MOUNTPOINT
sdc iso9660 Ubuntu 20.10 amd64 2020-10-09-21-15-31-00
├─sdc1 iso9660 Ubuntu 20.10 amd64 2020-10-09-21-15-31-00
├─sdc2 vfat ESP 6508-0C9E
├─sdc3 iso9660 Ubuntu 20.10 amd64 2020-10-09-21-15-31-00
└─sdc4 ext4 writable 8b73f753-eb94-40ec-8995-f57c64933d3f