My particular scenario is that I usually try to run the previous FC
and the
new FC in parallel.
Be careful, SELinux is incompatible poison from release to release.
In theory, it may be impossible to mount a filesystem read-write across
differing releases without causing disaster. Turn off SELinux completely,
or do the cross-mounts read-only, or be prepared to suffer. Learn about
/.autorelabel plus booting with "enforcing=0 single", and be prepared
to wait half an hour every time you boot a different system.
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