[9fans] can't install 9front kernels

[Friedrich Psiorz]

I recently updated my 9front and recompiled everything, including 
kernels and 9bootfat.
After installing the new 9bootfat and kernels to /n/9fat, the system 
fails to boot. The computer (Thinkpad X220) just reboots after 9bootfat. 
If I replace the new 9pcf with the old version (the one that came with 
the installer some months ago), it works again (with the new 9bootfat), 
so something about the kernel must be wrong. I have the same problem 
with both the 9pcf and the 9pc64 kernels.

I think I might have to change my configuration files, but I'm not sure 
how, or if that is even the problem. I haven't touched them so far.

Fritz