guys... i am using lenovo Z580..my laptop comes with one key recovery button..so, if we install ubuntu using windows installer and when i want to delete the ubuntu, if i use one key recovery button, will it remove ubuntu and re-install windows operating system or it won't delete the ubuntu ?

thank you !!!

You said "install ubuntu using windows installer", so I think you are talking about using Wubi? I haven't tried it, but I gather from reading the doc page I linked to that it does not repartition or format any of your disk partitions or delete Windows, so there should be no need to use the OneKey Rescure/Recovery button. After Ubuntu is installed, you are presented with a boot menu to allow you to boot into either Windows or Ubuntu whenever you boot your system. To remove Ubuntu, you just boot into Windows and go through the normal uninstall process. That is also explained at the link I gave you.

I don't know if installing Ubuntu via Wubi alters the functionality of the OneKey Recovery button from Windows or standalone (Rescue). You might want to check the Lenovo community forums to see if anyone there knows.

That said, I would suggest you back up your system and all your data regularly. You should also create recovery discs for use in case the recovery partitions that are used by the OneKey Recovery button get destroyed. The procedure is documented in the manual for your laptop.

I'd suspect that it will work but if I needed Windows, I wouldn't chance it.

Use a free virtual machine if your system has the resources. Second/equal to that would be to simply use usb flash drives or usb hard drives to run linux. Don't make changes to the windows drive.

Be sure to create the lenovo recovery media, RIGHT NOW as Z038 suggests.

Don't ever hit that button by accident! Things have gotten pretty bad in that "other OS" world if we now need dedicated one-key recovery buttons.

I guess the results will depend on what your Lenovo documentation says that button does. Does it actually overwrite your partition table with the original-as-shipped verison, and then reinstall the OS? Powerful little button they've got there if that's the case.

If my keyboard possessed such a key, I would remove it ... just as I, so many years ago, removed the "Reset" button from the keyboard of my Apple ][.

"If you ever find yourself in a bar, in which you wished that you had a gun in your pocket, then, dude(tte)... you are in the wrong bar!"

Trust me on this: virtual machines are a wonderful thing. (So are "multi-terabyte(!) external disk drives that, yes, you can buy at an office-supply store for pennies.")

You can, today, leave "your existing operating-system entirely alone," and install "any operating system(s) you please, including Linux," in virtual machines. Thanks to the hardware support that now exists for virtualization, the guests will run almost as fast as they would on a native machine, and so you never need to make "an either/or choice." (Fact is, most of the servers that you encounter every day on the Internet are running as virtual machines.)