Is there a bug in Ubuntu?
Also, there seems to be a lot of headaches caused by these 3TB drives as evident when searching on the web for solutions.
I used gparted from bootable USB (Ubuntu 11.10 64bit) and I think I finally have a GPT partition
but when I go into disk utlity and look at the info, the partition type shows:
Model: WD My Book 1140
Firmware Version: 1003
Capacity: 3.0 TB (3,000,558,944,256 bytes)
Partitioning: Unknown Scheme:
Partition type: Unknown ()
Type: Ext4 (version 1.0)
I then launch gparted and the device information shows:
Model: WD My Book 1140
Size: 2.73 TiB
Partition table: gpt
Total sectors: 732558336
Sector size: 4096
The external drive is plugged into the USB 3.0 port. Because of the unknown, I'm afraid to start copying files onto the external drive.
On my small drives Disk Utility shows gpt. Perhaps something about the 4K sectors?
What does this show?
sudo parted /dev/sda unit s print
Here's the output for the 3TB:
As a test, I tried it on a much smaller drive and I'm assuming this is what I should be seeing:Code:Model: WD My Book 1140 (scsi) Disk /dev/sda: 732558336s Sector size (logical/physical): 4096B/4096B Partition Table: gpt Number Start End Size File system Name Flags 1 256s 732558079s 732557824s
disk utility shows:
Partitioning:GUID Partition Table
Partition type: Linux Basic Data Partition
Partition table: gpt
It looks like you have a partition that is unformated? Did you format it to NTFS or ext4?
What you see on your smaller drive is exactly what I see on my two gpt drives that are 160GB & 60GB.
Code:fred@fred-MavericDT:~$ sudo parted /dev/sdd unit s print [sudo] password for fred: Model: ATA SSD G2 series 64 (scsi) Disk /dev/sdd: 117231408s Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 2048s 616447s 614400s fat32 boot 2 616448s 618495s 2048s bios_grub 3 618496s 58925055s 58306560s ext4 04 4 58925056s 117229567s 58304512s ext4 10
Very strange how disk utility is showing something different than what gparted is showing
I've attached screens from both utility and gparted
My guess ( I do not really know) is that Disk Utility is not truly updated for gpt for 4K drives. It seems to show gpt smaller drives ok. I think gparted then is more reliable.
My only concern then is what else is not updated for the new 4K drives. I have seen some issues on smaller external drives with 4K which did not seem necessary.
The WD site says all new kernels are updated, so it should work, but then some utilities may not.
What does gdisk show?
Code:fred@fred-MavericDT:~$ sudo gdisk /dev/sdd -l [sudo] password for fred: GPT fdisk (gdisk) version 0.7.1 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Disk /dev/sdd: 117231408 sectors, 55.9 GiB Logical sector size: 512 bytes Disk identifier (GUID): 85A657E7-D379-4592-B060-E8EA09953D80 Partition table holds up to 128 entries First usable sector is 34, last usable sector is 117231374 Partitions will be aligned on 2048-sector boundaries Total free space is 3821 sectors (1.9 MiB) Number Start (sector) End (sector) Size Code Name 1 2048 616447 300.0 MiB EF00 2 616448 618495 1024.0 KiB EF02 3 618496 58925055 27.8 GiB 0700 04 4 58925056 117229567 27.8 GiB 0700 10
Last edited by oldfred; November 20th, 2011 at 08:16 PM.
Update: I was able to find and install fdisk from here (thought it was part of ubuntu)Code:sudo: gdisk: command not found
I'm getting this for output:
Code:GPT fdisk (gdisk) version 0.6.14 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Disk /dev/sda: 732558336 sectors, 2.7 TiB Logical sector size: 4096 bytes Disk identifier (GUID): A1634F7C-96A4-48D9-B73C-BC91D10FFAF3 Partition table holds up to 128 entries First usable sector is 6, last usable sector is 732558330 Partitions will be aligned on 256-sector boundaries Total free space is 501 sectors (2.0 MiB) Number Start (sector) End (sector) Size Code Name 1 256 732558079 2.7 TiB 0700
Last edited by mreos; November 20th, 2011 at 09:21 PM.
I would download the newest gdisk if you want to do more than just list partition info with it.
GPT fdisk Tutorial -srs5694 in forums
Both gparted & gdisk seem to say it it ok. Have you copied some data and check to see if you have any issues?
Unless you have real needs for one very large partition, I would not have just one. Since it is NTFS, you need to run chkdsk periodically and it may take days if you fill it with data. Or if you have data corruption any scan tool may take many days to find lost info.
Last edited by oldfred; November 20th, 2011 at 09:50 PM.
@oldfred I had the same WD size. I encontered the 4k problem in both situations trying to partition the disk in 1 partition and in multiple partition. Gparted was able to handle ~1tb (better if less ~900MB) of a partition with no problem but i encountered again the 4k problem when partitioning the rest.My solution was to use different fs , I used ext4 , HFS+(no journal)and ext3 . Don't ask me why!
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