Page 1 of 1

Installing 3TB drives - what Partition Table to use?

Posted: Sun Jan 16, 2011 5:56 am
by dinomic
Hi there,

I'm having real problems "installing" my 3TB Hitachi drives. I've been trying to follow this How To:
http://wiki.amahi.org/index.php/Adding_ ... o_your_HDA

[NOTE: You'll have to excuse me because it's been over a decade since I've used any UNIX system properly!]

When I tried to use GParted, I had to choose a "Partition Table" to create, so I chose "GPT". This then let me use the whole "2.73TB" for a single partition, and I then formatted it as EXT4. The problem is that I then can't "see" the partition using hda-diskmount.

I then tried using cfdisk instead, which didn't seem to ask me which "Partition Table" to use. I tried to create a partition using all the avaiable space, which cfdisk *seemed* to let me do, but once the partition was formatted as EXT4, it had then shrunk to about 750GB. I, however, could mount it and see it in Amahi, but obviously I was missing about 2TB! :(

So, what is the best way to set up a 3TB disk using either utility??

Re: Installing 3TB drives - what Partition Table to use?

Posted: Mon Jan 17, 2011 4:03 pm
by sgtfoo
GPT/ GUID.

MBR doesn't do more than 2.3TB or so of space.

homework helps:
http://en.wikipedia.org/wiki/GUID_Partition_Table
http://www.cyberciti.biz/tips/fdisk-una ... r-2tb.html

FDisk doesn't seem to work with GPT. GDisk should. Your BIOS also needs to be capable and compatible. Look for a BIOS update for your motherboard just to be safe. It also helps to have the latest version of GRUB if you're using it for booting.

Re: Installing 3TB drives - what Partition Table to use?

Posted: Mon Jan 17, 2011 6:28 pm
by dinomic
GPT/ GUID.

MBR doesn't do more than 2.3TB or so of space.
sgtfoo, that's what I thought - everything I Googled suggested that GPT is used. However, the hda-diskmount script doesn't cater for this (I had a little peak at the script). So, unless there's an updated version somewhere, I guess I'm going to have to manually mount it, get it's UUID from Gparted, add this to /etc/fstab and hope that works.

Why doesn't the hda-diskmount script not cater for GPT? It's not because Greyhole doesn't support this, is it? I tried to Google that, but came up blank.

Re: Installing 3TB drives - what Partition Table to use?

Posted: Mon Jan 17, 2011 7:13 pm
by sgtfoo
ahah! it's in our forums here already!

http://forums.amahi.org/viewtopic.php?f ... 26&p=11617

Re: Installing 3TB drives - what Partition Table to use?

Posted: Tue Jan 18, 2011 1:30 am
by dinomic
ahah! it's in our forums here already!

http://forums.amahi.org/viewtopic.php?f ... 26&p=11617
Doh!! Thanks, sgtfoo. I'd initially searched for "hda-diskmount" and it found nothing, but I just tried "diskmount" and I found that result!

I'd actually managed to mount the drive manually using the method I mentioned - ie got the UUID from right-clicking the partition in Gparted and going to "Properties", and then manually pasted this into the /etc/fstab using another entry in there as a guide.

However, that link you found was good, so I'll ammend my hda-diskmount script. Thanks! ;)