Booting from OS X

[imac1844]

We recently got a new mac, and we decided to put windows xp on it as well... The bootup dident work and we got an error. We can't the disk out and it keeps booting from disk. How do we make it boot from OS X?

P.S. we bought it with os x on it already, so we dont have the disk.

 

[imac1844]

We successfully got the disc out - but the computer still wants a boot disc. Thanks

 

[Kaveman]

Boot with the Option Key held down.

Lets hope you didn't install it on the default C:/ Drive