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diff --git a/chromium/docs/website/site/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/index.md b/chromium/docs/website/site/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/index.md deleted file mode 100644 index ca00a39b881..00000000000 --- a/chromium/docs/website/site/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/index.md +++ /dev/null @@ -1,144 +0,0 @@ ---- -breadcrumbs: -- - /chromium-os - - Chromium OS -- - /chromium-os/developer-information-for-chrome-os-devices - - Developer Information for Chrome OS Devices -page_name: lenovo-thinkpad-x131e-chromebook -title: Lenovo Thinkpad X131e Chromebook ---- - -[TOC] - -## Introduction - -This page contains information about the [Lenovo Thinkpad X131e -Chromebook](http://www.google.com/intl/en/chrome/education/devices/lenovo-x131e-chromebook.html) -that is interesting and/or useful to software developers. For general -information about getting started with developing on Chromium OS (the -open-source version of the software on the Chrome Notebook), see the [Chromium -OS Developer Guide](/chromium-os/developer-guide). - -## Developer Mode - -**Caution: Modifications you make to the system are not supported by Google, may -cause hardware, software or security issues and may void warranty.** - -An unrelated note: Holding just Refresh and poking the Power button hard-resets -the machine without entering Recovery. That's occasionally useful, but use it -with care - it doesn't sync the disk or shut down politely, so there's a nonzero -chance of trashing the contents of your stateful partition. - -### Introduction - -Enabling Developer mode is the first step to tinkering with your Chromebook. -With Developer mode enabled you can do things like poke around on a command -shell (as root if you want), install Chromium OS, or try other OS's. Note that -Developer mode turns off some security features like verified boot and disabling -the shell access. If you want to browse in a safer, more secure way, leave -Developer mode turned OFF. Note: Switching between Developer and Normal -(non-developer) modes will remove user accounts and their associated information -from your Chromebook. - -### Entering - -On this device, both the recovery button and the dev-switch have been -virtualized. Our partners don't really like physical switches - they cost money, -take up space on the motherboard, and require holes in the case. - -**This device has unique requirements for entering recovery mode!** - -You must first remove all power from the system, both the battery and the AC -plug. Then when power is re-applied you have 20 seconds to enter recovery mode -with the ESC+Refresh+Power button sequence. - -In this system the removal of power sources will force the Embedded Controller -to restart and stay in read-only code to ensure the recovery mode is secure. - -To invoke Recovery mode, you hold down the ESC and Refresh (F3) keys and poke -the Power button. - -To enter Dev-mode you first invoke Recovery, and at the Recovery screen press -Ctrl-D (there's no prompt - you have to know to do it). It will ask you to -confirm, then reboot into dev-mode. - -Dev-mode works the same as always: It will show the scary boot screen and you -need to press Ctrl-D or wait 30 seconds to continue booting. - -### USB Boot - -By default, USB booting is disabled. Once you are in Dev-mode and have a root -shell, you can run: - -```none -sudo crossystem dev_boot_usb=1 -``` - -and reboot once to boot from USB drives with Ctrl-U. - -### Legacy Boot - -Sorry, but this device does not support a legacy BIOS mode. - -### Leaving - -To leave Dev-mode and go back to normal mode, just follow the instructions at -the scary boot screen. It will prompt you to confirm. - -If you want to leave Dev-mode programmatically, you can run `crossystem -disable_dev_request=1; reboot` from a root shell. There's no way to enter -Dev-mode programmatically, and just seeing the Recovery screen isn't enough - -you have to use the three-finger salute which hard-resets the machine first. -That's to prevent a remote attacker from tricking your machine into dev-mode -without your knowledge. - -## Firmware - -This device uses [coreboot](http://www.coreboot.org/) and [Das -U-Boot](http://www.denx.de/wiki/U-Boot) to boot the system. You can find the -source in the [Chromium OS coreboot git -tree](https://chromium.googlesource.com/chromiumos/third_party/coreboot/+/firmware-stout-2817.B) -and the [Chromium OS u-boot git -tree](https://chromium.googlesource.com/chromiumos/third_party/u-boot/+/firmware-stout-2817.B) -in the `firmware-stout-2817.B` branches. - -## What's inside? - -**WARNING: Opening the case and fiddling with the stuff inside could easily -brick your system and make it unrecoverable. DO NOT ATTEMPT if you are not -familiar with this process.** - -**[Stop.](http://www.youtube.com/watch?feature=fvwp&NR=1&v=Fj3WBfRZ5Nc&t=0m31s) -[Don't.](http://www.youtube.com/watch?feature=fvwp&NR=1&v=Fj3WBfRZ5Nc&t=0m31s) -[Come -back.](http://www.youtube.com/watch?feature=fvwp&NR=1&v=Fj3WBfRZ5Nc&t=0m31s)** - -Really. Opening the case will allow you to modify the read-only firmware that -makes recovery possible. If someone from "teh internets" says "You need to -reflash your BIOS", they're almost certainly wrong. - -### Disassembly - -Taking apart your laptop is **not** encouraged. If you have hardware troubles, -please seek assistance first from an authorized center. Be advised that -disassembly might void warranties or other obligations, so please consult any -and all paperwork your received first. If you just want to see what the inside -looks like, gaze upon this (click for a high res version): - -[<img alt="image" -src="/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-inside-top.jpg" -width=320>](/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-inside-top.jpg) -[<img alt="image" -src="/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-inside-bottom.jpg" -width=320>](/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-inside-bottom.jpg) -[<img alt="image" -src="/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-bare-top.jpg" -width=320>](/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-bare-top.jpg) -[<img alt="image" -src="/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-bare-bottom.jpg" -width=320>](/chromium-os/developer-information-for-chrome-os-devices/lenovo-thinkpad-x131e-chromebook/stout-bare-bottom.jpg) - -### Servo Header - -The X131e was not designed to use [servo](/chromium-os/servo). A small number of -debug units have a hand-wired header.
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