View Full Version : [ubuntu] Best way to determine hard drive IDs.

February 28th, 2010, 08:37 PM
I have Ubuntu 9.10 & Ubuntu 8.10 & 74Gb NTFS all on the same HDD. On a different HDD is WinXP Home. I thought it's time to take a look at Ubuntu 10.04 & want to install it over 8.10 but don't want to mess up. Is there a simple way to determine hard drives using the terminal? I know Ubuntu 8.10 is on 145Gb.

February 28th, 2010, 08:52 PM
I'm not sure I understood right, bit if you run in terminal

sudo fdisk -l

it will show all disks and the partitions on them. Also their names which can be used to tell them apart (plus the size). Note that the size is usually shown in a number of blocks, one block being 512Bytes, not in GB, MB, etc.

February 28th, 2010, 10:49 PM
Originally, the drive was NTFS then partitioned for Ubuntu. Ubuntu 8.10 is 145Gb & was installed before 9.10 which is 75Gb. I want to install Ubuntu 10.04 where 8.10 is now. Would that be sda3 Linux & sda7 Linux Swap / Solaris? I say that because of the proportion of ext4 & Swap.

Device Boot Start End Blocks Id System
/dev/sda1 * 1 9067 72830646 7 HPFS/NTFS
/dev/sda2 9068 36483 220219020 5 Extended
/dev/sda3 18134 35740 141428196 83 Linux
/dev/sda5 9068 17758 69810394+ 83 Linux
/dev/sda6 17759 18133 3012156 82 Linux swap / Solaris
/dev/sda7 35741 36483 5968116 82 Linux swap / Solaris

February 28th, 2010, 10:58 PM
Yes, according to the size that would be /dev/sda3.

Also, a reminder that you don't need two swap partitions. Linux OSs, even different distros, can use same swap partition because you only have one distro booted at the same time. No need to waste space for two swap partitions.

To double check if /dev/sda3 is 8.10, boot 8.10 and run:

df -h

That will show the mounted partition and free/used space, so it should say like

/dev/sda3 xxxxxxxx / <- that will be your 8.10 root because you booted 8.10