I have the same hard disk, a 4T My Book from WD and I have the same problem. The details might be a little off because I am not at work at the moment.
I used gparted to create a GUID Partition Table and created a ~3.8T partition and a ~100G partition. Disk Utility correctly identified the partitions, but could not identify the partition table. It characterised the partition table as unknown. I could not delete or modify the partitions using disk utility. My computer is a Dell desktop running 12:10 64 bit. Should I open a new bug since this one is expired. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-disk-utility in Ubuntu. https://bugs.launchpad.net/bugs/1083644 Title: Palimpsest does not support gparted GPT Status in “gnome-disk-utility” package in Ubuntu: Expired Bug description: The Disk Utility cannot edit partitions (create, delete, LUKS) on GPT- based drives with a size bigger than MBR-based drives would support. I have a 4TB WD My Book 1140.1016 that requires a GPT partition table because it's 4GB, beyond MBR (MSDOS) limits. When I create a GPT partition table, I cannot add or remove partitions from the Disk Utility with this output: Error erasing: helper exited with exit code 1: In part_del_partition: device_file=/dev/sdb, offset=3145729048576 Entering MS-DOS parser (offset=0, size=4000752599040) MSDOS_MAGIC found found partition type 0xee => protective MBR for GPT Exiting MS-DOS parser Entering EFI GPT parser No GPT_MAGIC found Leaving EFI GPT parser Entering Apple parser No MAC_MAGIC found Leaving Apple parser No known partition table found got it got disk ped_disk_get_partition_by_sector() failed Distributor ID: Ubuntu Description: Ubuntu 12.04.1 LTS Release: 12.04 Codename: precise Package: gnome-disk-utility Architecture: amd64 Version: 3.0.2-2ubuntu7 Depends: libc6 (>= 2.2.5), libgdu-gtk0 (>= 3.0.0), libgdu0 (>= 2.29.90), libglib2.0-0 (>= 2.22.0), libgtk-3-0 (>= 3.0.0), liblaunchpad-integration-3.0-1 (>= 0.1.17), libnautilus-extension1a (>= 1:2.91), libnotify4 (>= 0.7.0), libunique-3.0-0 (>= 2.90.1) Filename: pool/main/g/gnome-disk-utility/gnome-disk-utility_3.0.2-2ubuntu7_amd64.deb Size: 464774 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-disk-utility/+bug/1083644/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
