I have been searching for 2 days on how to remove the software upgrade dvd from my external hard drive. I have not figured out a way to do so. So I used my external hard drive as a disk to upload the OSX 10.5 onto my iMac, now everytime I turn on my computer it thinks i am trying to install leopard again. I need help removing the leopard dvd from my external hd. Please do not post unless you are going to help. All that n00b nonsense and telling me to search will not help. Please I need this.