[Oberon] constraints in the A2 Installer.

[eas lab]

>A2 has commands Partitions.WriteMBR and Partitions.FileToPartition which
>should install BootManager just as in NO.  I'll try it to be sure.
>
>Any reservations about an edit of the wiki documentation to address this case.
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I think the last sentence should end with "?"
Does installation really need to change/overwrite the MBR?
ETH normally respects the sacred-domain of Micro$soft.
Even rPi:ARM relies of <DOS-booting>.

== Chris Glur.