Apple recommends that if you wish to go from 10.4 to 10.6 then you should purchase the 10.6 Box Set.
System Requirements to run Snow Leopard:
Snow Leopard Installation Instructions:
- Mac computer with an Intel processor
- 1GB of memory
- 5GB of available disk space
- DVD drive for installation
Q: Can I upgrade directly from Mac OS X 10.4 (Tiger)?
A: Yes. Apple recommends purchasing the Mac Boxed Set for this
purpose, which will also update iLife (it is unknown at the time of this
writing whether older versions of iLife work with Snow Leopard) and
iWork. Also note that while it has been said that the $29 upgrade will
work with 10.4, it is not officially supported and may be in violation
of the licensing terms.
Q: What happened to the different install options? Can't I do an Archive & Install?
A: Apple has revamped the familiar installation options for Mac OS X.
You now have two choices, either a straight upgrade or a clean
install. Supposedly if you choose to do a straight upgrade, what
actually goes on behind the scenes is what was traditionally known as an
Archive & Install.
Q: Is there anything I can do to better prepare myself for the upgrade?
A: Yes. It is advisable to run a Verify/Repair Permissions and
Verify/Repair Disk in Disk Utility. You may also want to run the
maintenance tasks in Onyx. And finally, it would be wise to get your applications up to date using a program like AppFresh.
- Just insert the DVD in the optical drive.
- Restart your Mac while holding down the C key.
- You will be guided through the installation procedure and be prompted at one point to choose which install option you want.
- Once the Snow Leopard install is completed the Mac will restart itself.
- You will probably be asked to register with Apple upon restart.
- Enjoy Snow Leopard on your Mac!