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Subject: Re: [9front] How to rollback?
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> I have /n/9fat/9pc64.ok just in case something goes terribly wrong.
> For the rest I'll just use the dump.

Thank you Sigrid.  The bit I was missing was how to use that backed up
kernel, and that's via bootfile=9pc64.ok at the boot prompt, if I
grepped the man pages right.

(Sent from a freshly upgraded 9front.)