Hello! I have a /home partition that is almost full, and there is another partition nearby with a lot of free space. I would like to reduce the size of this neighboring partition and add the freed space to /home. I would like to do this safely, without using a Live USB or bootable flash drive. Is this possible?
Don’t do it on a live system.
Do it live, you’ll be fine, I do it literally once a week on production systems for over 20 years. The issue is yourself, make sure you’re well read.