Hi, I'm getting ready to sell my old iMac G5 (rev a) and I want to format the HD before selling. So I went to erase the disk in disk utility and it seems to be taking a long time. I told it to zero out the data and also rewrite it 8 times. I want to be safe because I'm selling it to a stranger and don't want to compromise my personal info. Anyway, selecting both of those options to format a 250GB drive should take how long do you think? Am I going to be waiting hours or days for it to finish? edit: I've been flamed before on here so I just want to say that I found some posts of people saying it took days but they rebooted the machine and then tried formatting it again and it worked. So I just want people to know I did my homework. I'm not just lazy and asking stupid questions. I just want to know if someone has done this and any signs of 'danger' I should know about in case I should just do a hard reboot or something and continue the process. Thanks.