Cr-48 Developer Mode and Rooting Instructions

Posted on 20. Dec, 2010 by in Tutorials, Videos

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Here is a video on how to get into developer mode and to the shell in order to root your Cr-48.


1. Turn off the Cr-48. Make sure you have a pen nearby or this is going to be difficult.

2. Flip the Cr-48 over.

3. Remove the battery.

4. Right beside the battery contacts there is a small bit of black tape. Take the tape off. Check my picture below.

5. There is a white switch under the tape. For user mode, the switch is away from the battery contacts. Use your pen to switch it towards the contacts.

6. Put the battery back in and start the machine. There’s an ominous message but you can hit CTRL+D to get past it. If you do nothing the device will eventually beep and start the process into developer mode.

7. The C-48 will wipe itself and replace the image with a developer copy. This takes 5-6 minutes.

8. You’ll need to go though the initial setup process again.

9. Once you get logged in, you can hit CTRL+ALT+T to get to the terminal.

10. While you can get to this shell in user mode, this terminal offers an extra command to use. To see all commands type “help”.

11. Type “shell” to drop to a full bash shell. You’ll be the special user named chronos.

12. Type “sudo su”


Photo of taped location in the battery compartment.


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Related posts:

  1. Video: How to Switch into Developer Mode on the Samsung Series 5 Chromebook
  2. Turning Off Suspend Mode on the Cr-48 When the Lid Closes
  3. Using Bluetooth on the Cr-48

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15 Responses to “Cr-48 Developer Mode and Rooting Instructions”

  1. Another Cr-48 Developer

    20. Dec, 2010

    Don’t forget to set a password once you flip the developer switch! (Try pressing Ctrl Alt -> to see the instruction, or type “cat /etc/issue” in the shell!)

  2. [...] 我们之前发过一篇如何让CR-48 螃蟹本进入开发模式的简单说明,今天The Chrome Source给我们带来了全程视频,预感到将来会拿到螃蟹本的同学不妨关注一下,其实非常简单: [...]

  3. ILYNOW- Android | ILYNOW

    21. Dec, 2010

    [...] 我们之前发过一篇如何让CR-48 螃蟹本进入开发模式的简单说明,今天The Chrome Source给我们带来了全程视频,预感到将来会拿到螃蟹本的同学不妨关注一下,其实非常简单: [...]

  4. [...] some prodding and poking at the linux file system inside the Cr-48. To fully explore it requires developer mode and a command shell, but a few interesting filesystem tricks don’t require developer [...]

  5. [...] This post was mentioned on Twitter by Lisa Brandt Heckman and aqeelkhan, Joubert Nel. Joubert Nel said: @mattknox this might help: [...]

  6. [...] TheChromeSource 0 Me Gusta +MeneameBitacorasRedditDeliciousGoogle [...]

  7. [...] has a Atheros AR5BBU12 Bluetooth V2.1 EDR 1] in order to use it the unit needs to be switched to Dev Mode & Rooted 2] after completing the steps on step 1….open a terminal by hitting CTRL+ALT+T. 3] Open up a [...]

  8. [...] thechromesource上的一篇文章已经详尽介绍了如何进入cr-48测试本的开发模式(Developer Mode)并获取root权限,在这里就介绍一下获得cr-48的root权限之后出现的情况。 [...]

  9. [...] will need to be in developer mode for this. Instructions are here. When the “Chrome OS is missing or damaged” screen appears, insert the USB Flash drive [...]

  10. [...] Posted on 06. Mar, 2011 by Daniel Cawrey in Tips As great as it is having the Cr-48 go from suspend to on quickly, sometimes there are situations where you’ll want the machine to stay on even if the lid is closed. Since there is no setting to do this right now, here is a way that you can have the machine stay on and ready to go even if you shut the laptop’s cover. 1. Go into development mode. Instructions are right here. [...]

  11. [...] 1. Put the laptop in dev mode. [...]

  12. nathan

    21. Apr, 2011

    what if i accidently pressed the space bar i cant get the blue screen back!!

  13. Daniel Cawrey

    21. Apr, 2011

    Power it down or let the battery die…

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    11. Nov, 2014

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