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I believe the utility you want is called a remote hypervisor.
On Wed, Aug 28, 2013 at 9:41 AM, McLauchlan, Kevin
<Kevin -dot- McLauchlan -at- safenet-inc -dot- com> wrote:
> Did I ask this already? Hope not...
>
> Is anybody using a clean and convenient way to pre-select what OS comes up after re-boot, in a cascading multi-boot arrangement?
>
> I've got GRUB loading CentOS by default... or allowing the option to pass to the Windows boot loader, to select between Win2008 R2 and Win2012.
>
> The problem is how to launch one operating system, for a while, then another........ remotely.
> If I'm physically at the computer, it's just a matter of poking up/down arrows at the right times during the boot sequence. But if I'm remote, I don't get an ssh or RD connection until after the default OS has launched... and then it's too late. I can edit GRUB from the Linux session, but if I set it to load Win instead of Linux, that's the last time I'll see GRUB until I get my hands on the computer again.
>
> Are there some uber-utilities that can handle this? ...that anybody is using... successfully?
>
> In another year, the last of our products will be updated and able to thrive in a VM, and I won't need multi-boot anymore, but until then, this is very inconvenient.
>
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