Pre-select multi-boot?

Subject: Pre-select multi-boot?
From: "McLauchlan, Kevin" <Kevin -dot- McLauchlan -at- safenet-inc -dot- com>
To: "techwr-l -at- lists -dot- techwr-l -dot- com" <techwr-l -at- lists -dot- techwr-l -dot- com>
Date: Wed, 28 Aug 2013 12:41:33 -0400

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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