'make installkernel' succeeding on read-only fs?

[Alexander Best]

hi there,

just stumbled upon this little detail:

1) have "/" mounted read-only
2) 'make buildkernel'
3) 'make installkernel && echo "success"'
   -> this will fail
4) 'mount -uw /'
5) 'make installkernel && echo "success"'
   -> this will succeed
6) 'mount -ur /'
7) 'make installkernel && echo "success"'
   -> this will succeed. why?

cheers.
alex