i am just testing dual-boot Solaris/NetBSD installation on SPARCstation 5.
   
   i first installed Solaris, i partitioned my disk with 'format' to slices, first
   one for Solaris, second for Solaris's swap, (third is whole disk), fourth and
   fifth i just created but left as unassigned. then i installed Solaris.
   
   after this i netbooted NetBSD, created disklabel in according to my previous
   Solaris vtoc: first and second slice i left unused, fourth as bsdroot and
   fifth as bsd swap.
   
   the problem i am fighting with is that NetBSD overwrites Solaris's vtoc with
   its disklabel and vice versa, so when i boot to Solaris again, disk is
   unlabelled. if i create new vtoc identical as first one, NetBSD will lose its
   disklabel..
   
   does any solution for this case exist?


you shouldn't need to use `disklabel' under netbsd at all.  however,
i'm not sure the install program in the 1.5 releases will let you do
this... i believe i only added that option after 1.5 branched.  you
could do a manual install from solaris.  see the web pages or the
INSTALL.txt document for details.


also, you can 'share' bsd & solaris swap, so don't bother burning an
extra partition for this...


.mrg.