Partion from inside Arch? [SOLVED]

riwa · 2006-04-17 12:57:40

I noticed that I didn't use all my disk space when I installed Arch. It's just a couple of gigabytes but since I'm filling up my diskspace I'd like to use them. I get following ouput from df.

223921/home/riwa/.Downloads$ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hda3              74G   67G  2.9G  96% /
none                  188M     0  188M   0% /dev/shm
/dev/hda1              32M   14M   17M  46% /boot

I have like 6 gigabytes unpartioned. How do I add them? Also, is there a way to add them to my /home partition?

/Richard

tomk · 2006-04-17 13:07:21

Taking your last question first, according to df, you don't have a /home partition, just / and /boot. So you can use the 6G as your home partition, by first setting it up with fdisk/cfdisk and mkfs, then copying everything in your /home directory over, and finally editing /etc/fstab.

riwa · 2006-04-17 13:52:23

I didn't understand at all. And yes, I noticed I don't have a /home partition so i'd rather keep it that way. I'll just want to name it "share" or something and have it in "/share". How can I do that? An please be a bit more specific about actions. I've never partioned outside an "installation" if you know what I mean.

test1000 · 2006-04-17 14:59:31

wiping is spelled without the h.

jaboua · 2006-04-18 19:27:48

First, you need to make a partition. These actions are performed as root:

fdisk /dev/hda

Press "p" to print what partitions you got. They should be numbered from 1-4, and if you got an extended partition, also 5+.

Press "n" to make a new partition. If it asks for a partition number, enter an unused partition number - which are used can be checked from the output of "p" above. Then you can probably just press enter twice for it to partition the unused space it can find. Press "p" again to see if you are content with the new partition layout - if you are, press "w" to write it to disc. If fdisk says that the kernel still uses the old layout, you have to reboot to use the new partition.

Then you got to format the partition - you should read the mke2fs manpage first to see what options you want (assuming you want ext3, since / is ext3), for example:

mke2fs -j /dev/hdaX

/dev/hdaX should be the partition you created in fdisk - for example /dev/hda4.

You have to create the mountpoint:

mkdir /share

Then you should add an entry to /etc/fstab to automaticly mount it at boot, start your favourite text editor and add something like this to the file:

/dev/hda4       /share               ext3        noatime                 0 0

At last, use this command to mount everything not flagged with "noauto" in /etc/fstab:

mount -a

The new partition should be mounted.

riwa · 2006-04-19 08:19:00

I can't get past the creating function in fdisk. It tells me that I don't have any sectors left. Maybie it's formatted in some other filesystem. But shouldn't fdisk find every partition and list it even if it doesn't understand it?

181203/home/riwa/# fdisk /dev/hda

The number of cylinders for this disk is set to 155061.
There is nothing wrong with that, but this is larger than 1024,
and could in certain setups cause problems with:
1) software that runs at boot time (e.g., old versions of LILO)
2) booting and partitioning software from other OSs
   (e.g., DOS FDISK, OS/2 FDISK)

Command (m for help): p

Disk /dev/hda: 80.0 GB, 80026361856 bytes
16 heads, 63 sectors/track, 155061 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1          66       33263+  83  Linux
/dev/hda2              67         587      262584   82  Linux swap / Solaris
/dev/hda3             588      155061    77854896   83  Linux

Command (m for help): n
Command action
   e   extended
   p   primary partition (1-4)
e
Selected partition 4
No free sectors available

tomk · 2006-04-19 08:44:56

Ah - right. I think I see your problem now. It's the age-old confusion between hardware and software disk/partition sizes. fdisk reports your disk size as 80026361856 bytes - divide that by 1000 three times, and you get 80GB. So far so good.

Your OS, however, sees things a bit differently, because it knows that 1KB is 1024 bytes, not 1000. Divide 80026361856 by 1024 three times, and what do you get? That's right - 74.53GB.

So the bad news is that you don't actually have the free space that you thought you had, but the good news is that you are getting the full value out of your 80 (or 74) GB disk.

riwa · 2006-04-19 14:00:12

Oh. Ok. I guess I have to buy an external HD then. Wouldn't it be possible to connect it trough usb?

tomk · 2006-04-19 19:50:37

You haven't mentioned any other internal hard disks, so assuming you don't have any, you'd be better off getting one - your IDE interface is a lot more efficient than USB.

riwa · 2006-04-19 22:39:35

Oh, forgot to mention, it's a laptop. :oops: Yeah of course it more efficient with IDE but in a laptop case wouldn't USB be the best option?

tomk · 2006-04-20 06:20:42

OK. Yes, USB for laptops.

Arch Linux

#1 2006-04-17 12:57:40

Partion from inside Arch? [SOLVED]

#2 2006-04-17 13:07:21

Re: Partion from inside Arch? [SOLVED]

#3 2006-04-17 13:52:23

Re: Partion from inside Arch? [SOLVED]

#4 2006-04-17 14:59:31

Re: Partion from inside Arch? [SOLVED]

#5 2006-04-18 19:27:48

Re: Partion from inside Arch? [SOLVED]

#6 2006-04-19 08:19:00

Re: Partion from inside Arch? [SOLVED]

#7 2006-04-19 08:44:56

Re: Partion from inside Arch? [SOLVED]

#8 2006-04-19 14:00:12

Re: Partion from inside Arch? [SOLVED]

#9 2006-04-19 19:50:37

Re: Partion from inside Arch? [SOLVED]

#10 2006-04-19 22:39:35

Re: Partion from inside Arch? [SOLVED]

#11 2006-04-20 06:20:42

Re: Partion from inside Arch? [SOLVED]

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