How the problem came to be:
- I wanted to dual boot Debian on my MacBook Pro 8,1. I got my USB ready, downloaded ISO, and installed rEFInd. I restarted to make sure the new boot manager worked. It did.
- To burn the ISO on my USB, I followed the instructions on the official Debian page, which require the dd command.
- However I was careless in my typing, and instead of choosing my USB to load the iso to, I chose a 10GB partition that I had set up long ago (i.e. of=/path/to/10GBPartition instead of of=/path/to/USB ). Tragically, I restarted my computer right as I realized what I had done.
Now, my computer loads immediately into a gray screen, and stays there. The screen comes up just about a second after the boot chime sound. I tried SHIFT, ALT, SHIFT+CMD+V, and I even tried inserting my OS X Lion CD, but absolutely nothing works. It simply goes straight to a gray screen, with nothing on. Any ideas on how to salvage this system?
Thanks for any and all help.