Calamares installer - "Erase disk" option is not available

[Henrik Christiansen]

During installation of Lubuntu, the option to select "Erase disk" disappears when the desired disk is selected

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: calamares (not installed)
ProcVersionSignature: Ubuntu 4.17.0-9.10-generic 4.17.17
Uname: Linux 4.17.0-9-generic x86_64
ApportVersion: 2.20.10-0ubuntu9
Architecture: amd64
CurrentDesktop: LXQt
Date: Fri Aug 31 11:09:31 2018
InstallationDate: Installed on 2018-08-30 (0 days ago)
InstallationMedia: Lubuntu 18.10 "Cosmic Cuttlefish" - Alpha amd64 (20180829)
SourcePackage: calamares
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1790094

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

What option was there then? How was the disk partitioned (or not) ahead of time?

[Henrik Christiansen (hxcdk)]

Hi Walter
I ran into this problem on two different machines, one with an SSD HDD and one with a regular HDD. Both machines had Lubuntu 18.04.01 installed.

I also had the same problem today, where I installed lubuntu-18.10-beta-desktop-amd64. I did a manual partitioning and the installation completed.

I then ran a new install and this the option to select "Erase disk" was suddenly available. So it looks like the bug is related to the current install?

Regards
Henrik

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

According to the code, the one thing that will inhibit the showing of the option is if something is mounted.

[Henrik Christiansen (hxcdk)]

Hi Walter
I think we can close this one.

I installed the latest build, as of yesterday, and I no longer experience this problem.

Regards
Henrik

[ԜаӀtеr Ⅼарсһуnѕkі (wxl)]

At least for now, I can't see of a great solution to the problem but I think I understand what it is. The option is not provided, as I said, if anything is mounted. Well, a feature of all of the Ubuntu images is that they automount swaps in an attempt to increase available memory. The solution is to `swapoff` those before running the installer. There's been a discussion about unmounting everything, or at least swaps, but even both of those are contentious issues. Still, I made a comment on an upstream bug. We'll see what happens.
https://github.com/calamares/calamares/issues/860#issuecomment-427693844