reformatting iMac running Win XP back to OSX

[coatech]

I'm trying to reformat an iMac currently running Windows XP (don't ask why that's even on there) to run OSX. Neither running the disc while started up, nor rebooting with it in the drive seems to be initiating the format. I'm new to working with macs, is there a step in this process I am unaware of.

Thanks.

 

[CWallace]

Could be the HDD partition. OS X and Windows use different partition structures to support booting the OS.

Use Disk Utility to delete the existing partition on the HDD and create a new one that is compatible with OS X (GUID, I believe).

 

[leman]

To boot the mac from the installation DVD, hold "C" during startup.

 

[coatech]

To boot the mac from the installation DVD, hold "C" during startup.

Tried that before I posted, no dice.

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Could be the HDD partition. OS X and Windows use different partition structures to support booting the OS.

Use Disk Utility to delete the existing partition on the HDD and create a new one that is compatible with OS X (GUID, I believe).

Good idea, this should work.

Thanks

 

[simsaladimbamba]

What kind of Mac OS X DVD do you use?

To create a Clean Install (formerly known as Erase & Install) of Mac OS X 10.6 Snow Leopard (the 29 USD Upgrade DVD is a fully working retail version of Mac OS X and does not need a prior installation of Mac OS X on the Mac), follow one of the following guides:
Short version: Clean Install of OS X 10.6 Snow Leopard
Long version: Mac OS X v10.6 Snow Leopard: How to Erase and Install​