• After installing linux on a laptop I noticed that Arch installed created 20G for root and the rest of the disk for /home
• I needed to merge them into one. 20G for / is too small and I don’t need the separation

Solution ¶

• Boot into archlinux usb
• mkdir disk and mkdir home
• Mount partitions to it mount /dev/nvme0n1p2 disk and mount /dev/nvme0n1p3 home
• Copy the content of home to the one inside the other partition cp -r home/emad disk/home/
• Remove the /home desk line from disk/etc/fstab. I commented mine just in case.
• unmount home umount home
• Run cfdisk /dev/nvme0n1. removed the /home partition (p3) and resize (p2) to fill the rest of the space. cfdisk will default to the rest of the space. very helpful
• Write the partition table and quit
• unmount the disk umount disk
• Reboot

What I missed ¶

• Copying the home files changed the ownership so I had to login with root and chown -R emad:emad /home/emad
• Running df -h . still shows the root size = 20G. that’s because we resized the partition but the filesystem still thinks it’s 20G.
  • So resize the filesystem to fill all the partition sudo resize2fs /dev/nvme0n1p2
• Another reboot is needed as my user session needed a clean start