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I am having a problem with ChrUbuntu and setting the default OS back to Chrome OS. I have tried sudo cgpt add -i 6 -P 0 -S 1 /dev/sda but all that returns is futility failed to exec /usr/bin/old_bins/cgpt: No such file or directory. How can I fix this? I have tried everything I know of, including trying to get cgpt back from the old_bins directory. No luck.

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If the apt-get doesn't work, have a look here… . I hope this helps. – Vasilis Nicolaou Sep 27 '13 at 19:42

I just ran into this problem myself. Fixed with sudo apt-get install cgpt.

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protected by Community Oct 2 '13 at 4:43

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