CR-48 IEC MARIO PONY 6101 no more bootable

[fdimeglio]

Hello all,

I got an old CR-48 who was in great condition and working nicely (never used it a lot) and during those holidays I decided to try to install Linux on it.

I followed the instructions here:

https://sudoroom.org/wiki/Installing_Ubuntu_on_a_Chromebook_CR-48

but I forget to do the first step called "Disabling BIOS protection".

All in all I did:

1) put the device in developer mode and rebooted it and got a terminal on it

2) saved the original BIOS (no issue at all) with "flashrom" using:
"flashrom -r backup.bin "

3) tried to flash the custom BIOS with "flashrom -w cr48.bin"

... but got as result some "writing errors" obviously because I did not do the "Disabling BIOS protection" step.

"flashrom" told me not to reboot the machine and unfortunately my power cable got disconnected (as I had the battery removed).

4) tried to reboot the machine and got the "Chrome OS is missing or damaged. Please connect a recovery device"

5) so I did created a USB stick as a recovery device for my CR-48 (thru the Chromebook Recovery Utility here: https://chrome.google.com/webstore/detail/chromebook-recovery-utili/jndclpdbaamdhonoechobihbbiimdgai?hl=en

6) the recovery USB stick booted normally and re-installed ChromeOS without any issue.

7) I rebooted and I got again the same result as step #4

What I am missing here ? As far as I can see, the fact that I can boot it thru the recovery USB stick shows that my BIOS should be OK, but I may be wrong.

Also, is there a way for me to get a Terminal with that Chrome OS Recovery ? I could not find anything.

Any help would be appreciated.

Thx,

Fabrice

[Mike Frysinger]

did you try pressing Ctrl+D ?

-mike

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[fdimeglio]

Thank you Mike for your response,

yes I did and it still shows the "Chrome OS is missing or damaged. Please connect a recovery device" (after I did a recovery with the USB stick)

Any other suggestions ?

One think that could probably help me would be to be able to have a terminal just before launching the recovery process: I mean here to boot with the UBS recovery stick and then not proceeding with the recovery process and instead having a way from that screen to get to a terminal. I am saying that because the USB recovery stick boots into a special version of ChromeOS which runs the recovery process thru a script (which I read by browsing the ChromeOS tools source code).

Thx,

Fabrice

[Michael Siejak]

You can only do an RMA shim (the script) if the device is in dev mode. And I'm not sure but you might be able to get a terminal in recovery mode with ctrl c (only when the device is verifying the recovery media)

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[Mike Frysinger]

it kind of sounds like your device might not be in dev mode.  but not sure how you'd run flashrom in the first place if that weren't the case.  can you verify you toggled the physical dev mode switch and still have it enabled ?

https://dev.chromium.org/chromium-os/developer-information-for-chrome-os-devices/cr-48-chrome-notebook-developer-information

i don't recall if we do the "OS is valid" check before or after the "is dev mode enabled" check.

running flashrom w/out disabling WP shouldn't have corrupted things ... so that's a bit weird.

-mike