partitioning 4K 3 TB USB hd for 64 bit Ubuntu 11.10
ctres at grics.net
Mon Mar 5 02:26:15 UTC 2012
This install episode has been rather convoluted but I believe I've
included all relevant info. I've been going 'round and 'round for a
couple days now.
I have, several times, tried to partition and install on this disc.
I've used gparted and Parted Magic which are two programs that handle
gpt partition tables to partition the drive before install every time.
Last time, I made a 1 MB partition and set the grub_bios flag as I was
told that Ubuntu would use the partition if necessary.
The / partition was about 74 GB, 2 GB for /swap and the remaining 2.3
(or so) TB dedicated to /home and I made a small /boot of about 256 MB.
On running the installer partitioner it reports the wrong sizes:
SCSI9 (0,0,0) (sdc) - 375.1 GB Seagate GoFlex Desk
128.0 kB FREE SPACE
#1 131.1 kB K biosgrub
#4 33.8 MB
#5 9.9 GB
#2 366.9 MB
#3 364.8 GB
57.3 kB FREE SPACE
Rebooting into my Natty install I issued df -h and see:
Filesystem Size Used Avail Use% Mounted on
/dev/sdc5 73G 180M 69G 1% /media/_root
/dev/sdc1 992K 24K 920K 3%
/dev/sdc4 250M 152K 237M 1% /media/_boot
/dev/sdc3 2.7T 202M 2.5T 1%
...which is as it should be except the 2 G swap isn't showing.
My hardware is not efi/uefi and there will be no Windows on the disc or
I'm trying, this time, to install from the alternate 64 bit dvd media.
Previous attempts with 32 bit refused to install grub, either to the 1st
disc (/sda holds only Natty) mbr or to the mbr of the 3 TB disc /sdc.
This was one of a few attempts - a couple with mbr partition table
-until I discovered I need gpt to recognize/make use of the whole drive.
Not sure but I believe I also attempted it with gpt table also.
What can I do to get this install happening when the Ubu installer is
telling me lies?
In case this matters:
I did manage to get one 32 bit install completed (I think) from the
desktop dvd media, after the "cannot install grub" complaint, when it
gave me the option to place grub elsewhere. I told it /dev/sdd (the 3 TB
drive) when /dev/sda (the Natty install) failed and it seemed to be ok
But upon running "sudo debconf-show grub-pc", the "grub-
pc/install_devices" line showed only the /dev/sda drive.
I then booted to the 11.10 install media and ran:
sudo grub-install --boot-directory=/mnt/boot, twice, once with /dev/sda
and again with /dev/sdc as the targets (both had been mounted on /mnt
Both commands exited cleanly and were reported as "successful with no
Looking at debconf-show grub-pc, again, only sda was showing as having
So anyway what's going on with the Ubu partitioner reporting incorrect
partition sizes and what black magic must be invoked to make this
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