Guided install on free space should clearly warn filesystem shrink is destructive or make it safe

[bjornharrtell]

AFAIK the installer guides the user to resize partition if there is no free space. However it's not clear it's only partition resize and as such is dangerous since it will not resize the filesystem (AFAICT).

In my experience I ended up corrupting my old existing /home causing me some grief. Granted, I should have been more careful. In either case I think this could/should be improved regardless.

[rastermanden]

This is a data-loss bug in the ISO configurator’s cfdisk path, not a suggestion.

cfdisk Resize only rewrites the GPT and does not shrink NTFS/ext4/btrfs/LUKS. The patch against omacom-io/omarchy-iso warns that Resize is table-only, snapshots the GPT, and restores it if an existing partition shrank. Deleting unused partitions to make free space still works.

PR: omacom/omarchy-iso#122