Just to share my humble experience... I had ubuntu and vista working perfectly side-by-side and I reduced the ubuntu partition to prepare for solaris installation, the instructions mention we should format it linux-swap...so I had 300Gb ntfs Vista, 180Gb Linux-swap=(160Gb Ubuntu, 20Gb free to host solaris)...
but the solaris installation only offered me to take over the whole 180gb (well, I technically could force it to leave some defined space free, but it was not clear it will take the 20gb I left free for it, or rather use the first 20gb of my ubuntu partition... Finally, I dodged the bullet and I went ahead and assing 20gb (I said to leave 160gb free)...now I have a working solaris partition, a non-working vista partition (I think I have to apply vista recovery methods) and I lost my ubuntu partition... Bottomline, the solaris installation instructions are not too clear...and I dont see why it does not include as a part of the installation a gparted-type of tool (as ubuntu does)... -- This message posted from opensolaris.org