Just checking my email this AM and reading your recent replies to Ubuntu GNOME mailing list i see you included a boot info summary with both the Windows drive and the Ubuntu drive connected:
http://paste.ubuntu.com/15574213/ The output of parted -l shows Win 7 is installed non-EFI but Ubuntu is installed in UEFI mode: =================== parted -l: Model: ATA Hitachi HDS72101 (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 1049kB 18.3GB 18.3GB primary ntfs diag 2 18.3GB 18.4GB 105MB primary ntfs boot 3 18.4GB 1000GB 982GB primary ntfs Model: ATA ST3750528AS (scsi) Disk /dev/sdb: 750GB Sector size (logical/physical): 512B/512B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 1049kB 538MB 537MB fat32 EFI System Partition boot, esp 2 538MB 742GB 741GB ext4 3 742GB 750GB 8569MB linux-swap(v1) Model: USB Flash Disk (scsi) Disk /dev/sdc: 2005MB Sector size (logical/physical): 512B/512B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags 1 16.4kB 2005MB 2005MB primary fat16 boot Model: Generic- SD/MMC/MS/MSPRO (scsi) Disk /dev/sdh: 15.8GB Sector size (logical/physical): 512B/512B Partition Table: loop Disk Flags: Number Start End Size File system Flags 1 0.00B 15.8GB 15.8GB fat32 That is, in itself, problematic. So please open a new thread at Ubuntu Forums here: http://ubuntuforums.org/forumdisplay.php?f=333 One of the forum mods there uses the moniker oldfred and he'll be able to answer your question and help you get that straightened out. My method would be to back up all the data on the Ubuntu drive and reinstall in non-EFI mode after creating a new msdos partition table on the Ubuntu drive, but there may be a simpler way :^) Please do be patient and wait for oldfred to reply. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1561842 Title: Grub bootloader disappears after a seemingly random amount of restarts/shutdowns. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1561842/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs