Arch Linux

sTiKyt

Member

Registered: 2020-12-24

Posts: 4

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Merge 2 partitions while preserving files?

I have 2 partitions that were made by arch install script, i usually installed arch manually but this time i tried script to save time

Problem is, it made partition for "/" 20GiB, which ran out very quickly while my "/home" partition is 900 GiB and has lot of space on it

Half AUR apps are trying to use places like /opt and take up that tiny space in no time

Is there any way i could just merge those partitions together and give all of that space to my "/" partition?

I don't have any spare external device with enough space on it to backup so it's not a solution

❯ lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINTS
zram0       254:0    0     4G  0 disk [SWAP]
nvme0n1     259:0    0 931.5G  0 disk 
├─nvme0n1p1 259:1    0   511M  0 part /boot
├─nvme0n1p2 259:2    0  19.5G  0 part /
└─nvme0n1p3 259:3    0 911.5G  0 part /home

Need nvme0n1p2 and nvme0n1p3 merged

Partitions are f2fs

Last edited by sTiKyt (2023-02-20 17:26:49)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,255

Re: Merge 2 partitions while preserving files?

Use a live disk, mount the home partition somewhere e.g. /mnt/homeOld, the root partition somewhere else e.g. /mnt/rootOld, move all the contents of the home partition into the directory /mnt/homeOld/home and move all contents of your root partition to the root of /mnt/homeOld using a command that preserves ownership fix your /mnt/homeOld/etc/fstab to use the new UUID and not reference /home explicitly, fix your bootloader config to reference the /home partition, reboot.

Last edited by V1del (2023-02-20 19:20:59)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,653

Re: Merge 2 partitions while preserving files?

It goes without saying, any file you are not afraid of losing has already been backed up.
The corollary to that is that a backup is not a backup until it is tested.

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