Regarding Partition Magic, if the active partition is a Solaris partition (and one booted Windows by chaining to its partition bootloader from GRUB), Partition Magic will no longer let you do very much; you end up having to make the Windows partition active, reboot, do whatever you want with Partition Magic, and then switch back to having the Solaris partition as the active partition. So one can work around that, but it's not friendly.
Still, PM is handy for resizing existing FAT or NTFS partitions, to make room for a Solaris partition on a laptop without having to reload Windows. This message posted from opensolaris.org
