I had the .iso on sda1 and copied the directory to sda2 and sda7, to be able to install to sda1. But, sda1 was still mounted as /isodevice, though the grub entry clearly pointed to .iso on sda2 (or sda7). I had to rename the directory with the .iso on sda1. I seems, that the installer tries all partitions in order to find the .iso location and uses the first one found.
Booting iso from sda7 was not possible, since sda2 was mounted as /isodevice. My menuentry for grub had to be (hd0,msdos2) or (hd0,msdos7), not (hd0,2) as in the documentation on ttps://help.ubuntu.com/community/Grub2/ISOBoot/Examples#Ubuntu_ISOs. You can find out in grub on the commandline with ls. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1155216 Title: Unable to umount isodevice To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1155216/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
