After the mentioned update there were nmoreupdates detected by Update Manager. I installed them and now the grub.cfg again has the correct hd1 entry and sdb1.
But it still does not boot each time. The problem is, that there are 3 "scsi" devices: sda, sdb and sdc. And the naming is not deterministic. I guess it depends on detection time. Sometimes hd0 (as seen by BIOS, which is always stable) is named sda, sometimes sdb and even sdc. Same with hd1 and the other (not hard drive) device. This just brings back the old, known problem of "relying on a particular detection order of devices is ... not reliable". There were many solutions proposed: UUID, devlabel, etc... Please advise (if you check the amount of issues I reported just today, you'll guess I am on the edge of deleting Ubuntu from my PC. For good.) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/738297 Title: wubi: boot disk changed after update -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs