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I recently saw that ChromeOS added the functionality to do split screen windows in tablet mode in the most recent dev releases. So I put my Chromebook R11 in dev mode for the first time and updated to version 62.

The flag is one of the many on this list https://peter.sh/experiments/chromium-command-line-switches/

The only resources for actually executing these switches was http://www.chromium.org/for-testers/command-line-flags

So I tried following the steps. I went to the crosh shell with Ctrl-Alt-T. Then I typed "shell". Then "sudo su". Then I tried to modify with "sudo vim /etc/chrome_dev.conf", but it was readonly so it didn't save.

So I visited here www dot chromium dot org/chromium-os/poking-around-your-chrome-os-device and followed the steps to making changes to the filesystem and disabling rootfs verification. But the command it told me to enter just gave me an error: "make_dev_ssd.sh: ERROR: IMAGE /dev/mmcblk0 IS NOT MODIFIED."

I'm running out of ideas and resources here..

1zee
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2 Answers2

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make_dev_ssd.sh is how you disable rootfs verification and modify files in the rootfs. If that's not working, that might be a bug in that script that should be reported & fixed upstream (e.g. https://crbug.com/new).

That said, are you sure you need to pass a command line flag ? Look at chrome://flags and see if the feature you want to access is available there. Many command line flag is also available on that page.

Mike Frysinger
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Try this:

sudo su
cp /etc/chrome_dev.conf /usr/local/
mount --bind /usr/local/chrome_dev.conf /etc/chrome_dev.conf
echo "--arc-availability=officially-supported " >> /etc/chrome_dev.conf
Alex Myers
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Westcity downtown boy
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