Comment 17 for bug 1902855

see also LP: #1871611, failing the install with disabled multipath.

You find several more reports about multipath being problematic, and usually you can work around the issue by disabling multipath support on boot by not loading the module. However multipath is hard wired into the installer.

I'll remove the disk for now for the installation, however this is not possible when you can't access the disks, or when they are soldered. having two SSDs in notebooks is not uncommon.