Making, drinking tea and reading an opus magnum from Simon J. Gerraty:
> >Yay! serial bootblocks cool yes please...

> >Oops not supported on i386, and we drop out of sysinst.

> Actually back to the initial menu.
> When I restarted the install - it forced me to re-enter all the partition
> info even though I said "use existing" - sub-optimal.

> Doh!  Looks like a bug in sysinst, I got the same error for "normal"
> bootblocks! 

[...]

Use an older boot floppy from the other snapshot. That should
work....

-B