[Solved] Resizing Partitions/Filesystems (ext4)

kai.scorpio · n00b Joined: 01 Sep 2011 Posts: 46

So I made a bit of a typo when creating my partitions (300M =/= 300G :oops:

), and would like to fix it. My partition table currently looks like so:

eccerr0r · Posted: Mon Sep 03, 2012 7:21 am Post subject:

Since you have to move the start of sda6 I'm not sure you can resize2fs...

I was mucking with gparted and it didn't like moving a fat32 partitions so I'm not sure about how well this will all work...
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massimo · Veteran Joined: 22 Jun 2003 Posts: 1226

I would backup sda6, then delete it, resize sda5 and restore the backup on a newly created sda6 partition.
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kai.scorpio · n00b Joined: 01 Sep 2011 Posts: 46

ianw1974 · Posted: Mon Sep 03, 2012 11:48 am Post subject:

You could effectively make /dev/sda6 smaller so that it is the size that you want plus the 300M from /dev/sda5 to the size you want for Windows. Then create /dev/sda7 and move the data from /dev/sda6 to /dev/sda7. Then you can make the /dev/sda5 bigger. In fdisk later, you can go into advanced mode, which will then allow you to renumber the partitions so that /dev/sda7 then becomes /dev/sda6.

A bit long-winded, but doable. But the previous suggestions are probably easier in just backing up /dev/sda6 and deleting, and redoing it once the Windows partition has been expanded.
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kai.scorpio · n00b Joined: 01 Sep 2011 Posts: 46

I ended up backing/restoring, but looking over at it this should be possible. In advanced mode, fdisk has the option

eccerr0r · Posted: Tue Sep 04, 2012 12:38 am Post subject:

Moving the beginning of the partition is one thing but moving the data within the partition is something else...

Theoretically with an SSD this should be a near 0-cost operation though... for a hard drive this is a very risky proposition to shift the whole partition...

I believe gparted CAN do it though... that's the thing, need gparted...
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kai.scorpio · n00b Joined: 01 Sep 2011 Posts: 46

Ah, I read the description as moving the actual data inside the partition. Probably not though, since I guess this would require support for the different filesystems... I wonder how gparted does it.

I think I will make myself a gparted recovery disk, it sounds very useful, unless anybody knows of a command-line equivalent so I can avoid putting X/gtk on the disk?

Kai

eccerr0r · Posted: Tue Sep 04, 2012 7:08 pm Post subject:

I think the gparted ISO is something that everyone should keep handy, it's a neat tool when one screws up partitioning :D
It indeed warns people when moving partitions, and takes a while to move files.

I believe it moves files around versus shifting the partition. Not sure though. Even with gparted I'm afraid of it screwing up and making a mess out of my partitions. That's why it's best to backup before trying.
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