sysinstall problems upgrading from stable to daily latest

[Will Senn]

As I was doing sysinstall against https, nycdn... NetBSD-daily, I 
experienced an issue that I don't know how to process:

When I picked the destination, I chose wd1, the disk where I installed 
the system (I didn't read carefully or I might have chosen "current 
system"). The installer then did an fsck on rdk1 and failed. I reran it 
and it succeeded, so I went on with the upgrade. At the end it 
complained about umount failing on / and I gather that's because I am 
currently running the system. After rebooting, things seem to work properly.

I asked on irc and it turns out that rdk1 is a raw version of something 
called a wedge that corresponds to a partition? Anyway, mount shows dk1 
as being /.

All in all, I wonder if choosing "current system" is the answer to both 
problems - maybe it won't fsck rdk1 and won't try to umount /. Is this 
correct or do I have a real problem with my rdk1?

Thanks,

Will