My 2007 Macbook Pro has suffered from a failure of its GPU and will now only boot in Single User mode.
I want to sell it on eBay for spares, but obviously I don't want a hard drive with live data on it ending up on eBay.
I know you can destroy a drive's contents with a secure erase in Disk Utility, but as I said, I can't boot into any mode that requires graphics because the GPU is dead.
How do I secure erase the machine's drive in Single User mode?