Advanced installation option (for 20.04) keeping only /home intact / untouched

[bdutta]

Would like to migrate a Ubuntu MATE 20.04 machine that I had setup 2 months back, to Lubuntu 20.04. My disk partitions (all ext4) are like this:

• /var – mounted to a logical partition on HDD
• /tmp – mounted to a logical partition on HDD
• /home – mounted to a logical partition on HDD
• / – mounted to my SDD
  I am very happy with the above partitioning and mount arrangement.

I would like to do a complete reinstall of Lubuntu 20.04 on this desktop, wiping clean (erasing) everything else, except /home. I’d prefer to avoid re-partitioning, if feasible.

What installation / disk partitioning option could I choose to ensure this ?

TIA.

[KGIII]

This link is for MATE, but it’s the same for you - and pretty straightfoward.

https://ubuntu-mate.community/t/install-ubuntu-mate-using-the-something-else-method/651

Basically, you pick “something else” during the partitioning phase and you don’t tick the box to format /home. It’s pretty straightforward.

So long as you don’t opt to format your /home partition, you’ll be all set and things should go as you’re expecting.

EDIT: Please see the comment below mine. It’s named a bit differently (and looks a bit different) in 20.04’s installer.

[guiverc]

FYI: Something else is called Manual Partitioning in the calamares installer.

Sixth image from the manual page on installation, ie. https://manual.lubuntu.me/stable/1/1.3/installation.html

[KGIII]

Thanks! I forgot they changed the installer. I’m being grumpily stuck on 18.04 (out of personal choice). I’ve bookmarked said link so that I remember.