## Observation

With the update of systemd 256, kiwi no longer produces a working 'mediacheck'
entry.

The problem is that systemd 256 runs from initrd with ProtectSystem=yes, i.e
read-only /usr file system.

Ignition had a similar issue and solved it with something like

+if [ ! -w /usr ]; then
+    mount -o rw,remount /usr
+fi


openQA test in scenario opensuse-Tumbleweed-XFCE-Live-x86_64-mediacheck@64bit
fails in
[mediacheck](https://openqa.opensuse.org/tests/4365884/modules/mediacheck/steps/9)

## Test suite description



## Reproducible

Fails since (at least) Build
[20240729](https://openqa.opensuse.org/tests/4365884) (current job)


## Expected result

Last good: [20240728](https://openqa.opensuse.org/tests/4363087) (or more
recent)


## Further details

Always latest result in this scenario:
[latest](https://openqa.opensuse.org/tests/latest?arch=x86_64&distri=opensuse&flavor=XFCE-Live&machine=64bit&test=mediacheck&version=Tumbleweed)