Hi mpan,
> (…)
> This is about some error entries in the system journal, which I encountered
> during copying this ISO image over. The respective transcripts are provided
> inline, as well as attached in the form of plain text files.
> (…)
I believe this is unrelated to the copying process.
Actually, I am certain that the behaviour was triggered by the copying process, as the log journal entries were reproducible by repeating the installation for a second time.
udevd stopped
responding for `WatchdogSec` seconds,⁽¹⁾ systemd restarted it. This kind
of reports are usually associated with some specific piece of hardware
leading to udevd lock-up, and no less often the bug is resolved in later
kernel releases.
The logs indicate some failed attempts to SIGABRT and then SIGKILL. Shortly after the completion of the operation (when the kernel emits sda: sda1 sda2), a log:
systemd-udevd.service: Main process exited, code=killed, status=9/KILL
can be spotted. Thus it is rather clear that the error is truly related to the ISO image installation to sda.