If you tried flashing your BIOS on the CR-48 and totally disregarded the warnings about ensuring that you have removed the bottom casing and covered up the little square with electrical tape and now your CR-48 no longer boots, you’ve come to the right place. You will first need access to a functional computer running Linux.
Here’s what you need to do.
- First download a developers build of Chrome OS for the CR-48. Unfortunately Todd Vierling removed all of his old builds EXCEPT THIS ONE.. -> https://www.strongspace.com/shared/uhm6ydrg1p
- Download the Chrome OS Image Creator – When writing the .bin image, be sure to have at least a 4 GB Flash Drive and click the “Local Image” button. (NO OTHER IMAGE WRITER WILL PROPERLY BURN THE DEVELOPERS BUILD FOR SOME REASON, tried dd, unetbootin, Ubuntu Startup Disk Creator, none worked.) http://support.google.com/chromeos/bin/answer.py?hl=en&answer=1080595
- Download a copy of the Luigi BIOS for the CR-48. This will give you a regular BIOS that will allow you to install ANY OS you want. http://www.techjawa.com/cr48bios.bin
- With your freshly written USB drive, insert it in to a Linux box such as Ubuntu. It should automatically mount your C-ROOT and C-STATE volumes. Your easiest method for accessing this partition would be to open up a terminal as root, and go to the /media/C-ROOT folder or whatever your distribution auto mounts it under.
- Within that mounted folder as root, edit the usr/sbin/chromeos-install script. Replace the ENTIRE CONTENTS OF THIS FOLDER WITH THIS
#!/bin/bash flashrom -w /home/chronos/cr48bios.bin
- Copy the cr48bios.bin file to the home/chronos folder.
- Properly unmount your flash drive.
- Make sure your CR-48 HAS A PIECE OF ELECTRICAL TAPE OVER THE BIOS PROTECTION RECTANGLE.
- Turn on DEVELOPER MODE on your CR-48.
- Boot up your CR-48 and do not insert the USB Flash Drive until you see the error “Chrome OS is Missing or Damaged”.
- Let the recovery process finish completely. This will take up to 10 minutes or so. Remove the USB drive when it tells you to and feel free to shutdown the machine and reboot. You’ll now see an actual BIOS! By default, the Chrome OS build will boot. But feel free to install any OS you want thereafter.