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?
I’m pretty sure you’re going to have to use a live USB. You can’t modify a partition while it’s mounted and you can’t unmount a partition that’s in use.
! thank you, but maybe you can tell me, how can I do it on a live system, please?
Use a live image with gparted (most normal distros come with it) start it and the gui should be pretty self explanatory.
Use cfdisk and just edit the partitions.
Please note that if you do this without first resizing the filesystems on the partitions, you are very likely to lose data. You cannot safely shrink a mounted partition.
Edit: oh you mean booted from external media, not an online system. Use gparted. https://gparted.org/
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.