My Acer C720 with 4 gigs of RAM is failing to switch back and forth between Chrome OS and Elementary OS Luna when I press CTRL+ALT+SHIFT+ [back or forward buttons] after I successfully installed Elementary OS Luna with MyDearWatson. (By the way, AldousP's script worked great for me. Kudos to AldousP!)
I can successfully launch Elementary OS from Chrome OS but once I am in Elementary OS I need to logout (or shutdown or restart) to get back to Chrome OS.
Immediately before running MyDearWatson on my Acer C720 I "recovered" (reinstalled) Chrome OS on this machine. In other MyDearWatson was run on freshly on a machine with recovered Chrome OS.
Have you considered editing the README.md file associated with MyDearWatson to include something like, "Do not upgrade to the most recent version of Ubuntu because doing so would cause your installation of Elementary OS to fail. In particular, be aware that if you are prompted with a seeming helpful or at least innocuous suggestion to upgrade your version of Ubuntu, in effect you are being asked if you would like to render unusable (worthless) the version of Elementary OS you installed with MyDearWatson. In terse, plain English: Do NOT upgrade Ubuntu when running Elementary OS which you installed with MyDearWatson. You have been warned!"
As I suppose you have inferred, I indeed upgraded my version of Ubuntu when prompted. But Chrome OS is so easy to "recover" (reinstall) the problem was a very minor inconvenience for me.
The following is a bit of prognostication. Feel free to ignore it.
Chromebooks + Elementary OS installed with MyDearWatson seem like a serious competitive threat to Apple Inc's desktop/laptop marketshare. But hey, what do I know. Back in 1997 I figured Apple Computer would be bought by one of its competitors not bailed about by Microsoft which was apparently concerned about losing a legal battle against the United States Department of Justice's Antitrust Division.
Have you considered editing the README.md file associated with MyDearWatson to include something like, "Do not upgrade to the most recent version of Ubuntu because doing so would cause your installation of Elementary OS to fail. In particular, be aware that if you are prompted with a seeming helpful or at least innocuous suggestion to upgrade your version of Ubuntu, in effect you are being asked if you would like to render unusable (worthless) the version of Elementary OS you installed with MyDearWatson. In terse, plain English: Do NOT upgrade Ubuntu when running Elementary OS which you installed with MyDearWatson. You have been warned!"
As I suppose you have inferred, I indeed upgraded my version of Ubuntu when prompted. But Chrome OS is so easy to "recover" (reinstall) the problem was a very minor inconvenience for me.
The following is a bit of prognostication. Feel free to ignore it.
Chromebooks + Elementary OS installed with MyDearWatson seem like a serious competitive threat to Apple Inc's desktop/laptop marketshare. But hey, what do I know. Back in 1997 I figured Apple Computer would be bought by one of its competitors not bailed about by Microsoft which was apparently concerned about losing a legal battle against the United States Department of Justice's Antitrust Division.