The core Manjaro software is around 6-7 GB from an officaial ISO. Then there are logs, cache, package cache and personal files that can take up space. It’s not uncommon that a system, that has been in use for a couple of months is around 20 GB’s if not maintained properly.

How much space does manjaro need?

Manjaro System Requirements

30 GB of Hard disk space. Minimum of 2 GHz processor. HD graphics card and monitor.

How big is manjaro?

As such, it is recommended to have at least: One gigabyte (GB) of memory. Thirty gigabytes (GB) of hard disk space. A one gigahertz (Ghz) processor.