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Possible Duplicate:
How can I reboot into windows from inside my Linux shell?

When I reboot and want to select another kernel image in grub2 or another OS like windows I have to wait until grub comes up and then select manually the image I want. Sometimes I switch multiple times between linux and windows or between two different kernel versions, then I find it pretty annoying to select this manually.

What I want is to choose the image when I type in the reboot command. In pseudocode: sudo reboot to windows. Then I could get a cup of coffee and my box will automatically reboot to windows.

Is it possible to to something like this?

I guess that somebody would point out a VirtualBox solution instead. I know this, but I don't want it in this case.

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  • [See this for how to `sudo grub-reboot ENTRY`](http://askubuntu.com/a/63079) where `ENTRY` is a number or string corresponding to a menu entry title. Also if you play with many Linux kernels, you might appreciate [`kexec`](http://en.wikipedia.org/wiki/Kexec). – sr_ Nov 05 '12 at 20:48
  • [Ha, I knew we had this one, too.](http://unix.stackexchange.com/q/43196/11539) – sr_ Nov 05 '12 at 20:56
  • Thanks. How can I find out the ENTRY number of a given image without rebooting (i.e. from the running system) and conversely the image name for a given ENTRY number. Best on the command line... – student Nov 06 '12 at 17:15

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