This is kind of two questions in one. I have Hirens on my 2GB flash drive. Somehow, while tweaking and adding files to the list, I killed the bootability. I had used unetbootin to create the usb. So...
Question 1: Without re-formatting and recreating the USB, is there a way to patch the bootloader so it becomes bootable again? I googled, but didn't quite find anything specific enough.
Question 2: Is there a way to lock the necessary files to prevent this from happening again?
I'm on Mac btw, so if I don't have to boot into VMWare, I'll be even happier.