My iMac G4 has now started acting up big time, and it seems like the Hard Drive will need to be replaced since in Disk Utility the SMART status states failing. I've managed to boot into it for just a few minutes to quickly back up my files before I got the beachball, which I successfully did, but before I take my iMac to get fixed, is there any way to wipe the disk clean before I do so. I write a lot scripts, and jot down ideas in the computer, and I the thought that someone might get access to them worries me a bit. I tried doing a clean install of MacOS X but it won't even recognize the hard drive to install it on. Also, if I do infact still have my computer covered through AppleCare, would Apple take care of the cost to have it replace for free, or will I have to pay for it, or still have to pay a deductible or such? Any advice would greatly be appreciated.