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SOLVED The problem was that dev_boot_legacy and dev_boot_usb had been disabled. Without getting into ChromeOS there seemed to be no way to set them until I found this. It worked like a charm and I've just booted into Linux Mint off USB.
I've been running Linux on my Acer C720 since day one and I love it, but a recent series of events has left me locked out of it. I'd love to get it running again but I cannot figure out a way back in. I'll break down a short history and recent events.
Acquired C720 and unlocked developer mode
Installed several flavors of Debian, completely removing ChromeOS from the SSD, eventually settling with Arch Linux.
After enjoying Arch for a year decide to try out Qubes.
Something fails during Qubes installation.
Boot into a Debian live environment from USB. Debian cannot see my SSD.
Try a few different distros from USB, but fdisk et al. cannot see my SSD.
Now I highly doubt that Qubes broke my SSD. It was probably already faulty but my Arch install was chugging along and not using the bad sectors. This is where I think I locked myself out, I don't remember the exact order of things but I re-enabled OS verification at the boot screen, and attempted to run the ChromeOS recovery from a USB. The ChromeOS recovery also failed. I put the SSD in my desktop and confirm that it was indeed dead.
So now I have a Chromebook with OS Verification enabled and no SSD to restore ChromeOS on. Bummer. But I figured I could try some things, so I booted into recovery mode with Esc-Refresh(f3)-Power and hit Ctrl+D at the Recovery Screen, success! I was able to disable OS Verification. But this has not solved my issue...
When I boot I can press Ctrl+D to be taken to a screen that tells me Chrome OS is missing or damaged and to insert a recovery USB. Pressing Ctrl+L at any point just makes the Chromebook beep at me. If I insert a USB loaded with Linux I am told "The device you inserted does not contain Chrome OS." I have no m.2 SSD to put into the chrome book to recover it and start the process from a virgin state.
What I'd like to do at this point is use the Chromebook running my OS from a USB stick, at least until I can afford a new SSD which will not be for some time. Is there any way for me to do this?
Last edited by monkeypants (2016-07-05 04:22:04)
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