Comment 14 for bug 1983041

> The crash log says "Invalid partition label type: mbr" when I tried using mbr.

Curtin wants "ptable: msdos" for that case. Supporting an alias for that valid to accept "ptable: mbr" is probably a good idea.

https://curtin.readthedocs.io/en/latest/topics/storage.html

> It doesn't seem possible to create a disk with only one ext4 partition and no bios grub partition without having subiquity crash. I have tried using both a gpt and mbr partition label but both fail. Should I open a separate bug report for that?

I haven't tested it, but that config looks good to me except for the above note. gpt should work also if you give it the 1MiB size & 1 MiB offset compat partition.

While it would be OK to open a new LP for this, it's a known issue that we could improve schema validation and catch errors like this in a more upfront manner. Up to you :)

> I have tried adding experimental-autoinstall to the kernel parameters for the 22.04 desktop installer but it doesn't create a /var/log/installer/autoinstall-user-data file. I tried with and without leaving the maybe-ubiquity kernel parameter in place too.

Don't expect too much of that yet. We know that the autoinstall bits aren't in place yet and have been prioritizing other work first. This is why I disabled autoinstall for the Canary ISO, until it's at least semi-working.

> I was expecting it would use the subiquity installer with that option but it used the normal one.

Ah, interesting. While the Subiquity Terminal UI is present on that ISO, we don't have things set up to actually run it. I'm not sure that UX has been decided for that case. I'm guessing that we'll end up booting to the Desktop and showing the last page of the Desktop Installer UI to show progress.