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I am using arch-linux dual-boot windows currently on Asus ZenBook UX305 Laptop with 256 GB memory. I have approximately 70GB given to linux and rest to windows. I need to install a software which needs 17GB memory free and I prefer installing it in my linux os, but as you would have guessed I dont have enough space. My root has ~13 GB free while my home has ~16 GB free and Windows has enough free space.

Here is screenshot of GParted partition window.

Device--------Size----Used---Unused--% Used---Mount Point

/dev/sda5----42G----28G----12G-------70%-------/

/dev/sda6----26G----8.8G---16G-------36%-------/home

/dev/sda4----162M--49M----114M-----30%-------/boot

/dev/sda3----167G--148G---19G------ 89%-------/run/media/naman/OS

Is it possible to resize my root partition for the partition table to install the big software in linux partition (even bit unsafe method?!).

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  • there's no need for a remotely hosted image when text will do (for reasons why, see meta.unix.stackexchange.com/questions/4086/…). copy and paste the output of fdisk into your question.
    – cas
    Commented Jan 6, 2018 at 14:27
  • please add the fdisk output even though i've answered your question already. the question (and answer) is useless to anyone else without that information. someone may come up with a better answer than mine anyway.
    – cas
    Commented Jan 6, 2018 at 14:39
  • thanks, but that's incomplete. try fdisk -l /dev/sda.
    – cas
    Commented Jan 6, 2018 at 15:55

1 Answer 1

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Your main windows partition (/dev/sda3) has ~18GB free, but it's a primary partition while your linux partitions are in extended partitions. Without a complete backup, repartition, reformat and restore, the only way to do it with your current disk layout is to:

  • Move your /home directory into the / partition (there's more than enough space for it). This should be done in single-user mode (or, at least, while only root is logged in and nothing is writing to any file under /home).

    For example:

    umount /home
mkdir /home.old
mount /dev/sda6 /home.old
mv /home /home.old
rsync -a /home.old/ /home/
umount /home.old

  • Edit /etc/fstab and comment-out or delete the line for /home.

  • Delete the /home partition (/dev/sda6)
  • Extend the / partition (/dev/sda5) so that it takes up all the free space that used to be /dev/sda6.
  • Grow the / filesystem with resize2fs

If you use gparted, the final three steps can be done in one easy operation.

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