"installboot" broken on NetBSD/amd64?

[Matthias Scheler <tron%zhadum.org.uk@localhost>]

        Hello,

it seems that "installboot" can no longer update bootblocks under
NetBSD/amd64 current:

        tron@lyssa:~#installboot -v /dev/rwd0a /usr/mdec/bootxx_ffsv1
        installboot: Opening file system `/dev/rwd0a' read-write: Device busy

I'm using the above command without problems for years. And according
to the manual page it should still work.

        Kind regards

-- 
Matthias Scheler                                 https://zhadum.org.uk/