Hey everyone I am planning to install Solaris on a system that already has Slackware and Windows XP installed on it. How do I go about partitioning the harddrive so that the filesystem for the solaris partition will be "Solaris"? I tried using cfdisk from the slackware cd but I did not see anything about "Solaris" Any ideas?

You can try "Linux swap" (0x82), which happen to be the the same partition id than Solaris before a new one arrived (0xBF). Both are accepted by Solaris 10 and +.

Otherwise, you can also let some free space available, and the Solaris installer will pick it and create its own partition on it, (if you ask for it).

In any case, backup your original MBR/partition table, and every important data on your existing O/Ses before installing Solaris. A mistake in the installation and you can quickly loose all your data.

Another important thing to know is that Solaris requires a primary partition to be installed, there is currently no way to have it installed on an extended one.