Can you format your hard-drive while upgrading from Leopard do Snow Leopard (upgrade version)?

Hello,
I want to purchase Snow Leopard (upgrade version) but I was planning on doing a format when installing it.
Is it possible?
Thank you!

cocoazenith wrote:
I want to purchase Snow Leopard (upgrade version) but I was planning on doing a format when installing it.
Is it possible?
Yes, the 10.6.3 white retail disk can upgrade 10.5 to 10.6 via the installer, but you can also hold c  or option key down while booting from the disk and use Disk Utility to Erase and then install 10.6 fresh.
Naturally all programs and user file will be removed, so you need to backup files first and take stock of your programs that will have to be reinstalled again from original sources.
To get the white 10.6.3 disk, call Apple via the phone, it's not sold online anymore, or search Amazon.com or amc related websites for the disk.
Most commonly used backup methods
How to erase and install Snow Leopard 10.6
However if you choose to upgrade over 10.5, keeping your programs and files (backup files regardless) intact and it proceeds just fine, but want to improve the performance, you can use this method
How to properly defrag a Mac's hard drive
If your upgrading from 10.5 to get to 10.7 or 10.8, I don't advise it. Software Update to 10.6.8 max and stay there, your machine is too old.
Things to consider before upgrading OS X

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