Public bug reported: When use grub2 to loopback boot the precise-alternate-i386.iso in a flash usb disk, the boot is OK, but can't install, because It can't find the cdrom.
menuentry "Ubuntu 12.04.1 Alternate i386" { iso="/boot/ubuntu-12.04.1-alternate-i386.iso" loopback loop $iso linux (loop)/install/vmlinuz boot=casper persistent iso-scan/filename=$iso noeject noprompt -- initrd (loop)/install/initrd.gz } And the server iso is the same problem. But, the desktop iso is OK. You should fix this bug, CDROM is outdated and inconvenient. ** Affects: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1159594 Title: grub2 can boot precise alternate iso, but can't install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1159594/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs