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Old 12-03-2015, 05:13 PM   #1
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Linux Mint, Windows 7 and Windows 10 triple boot

Hi, sorry if this isn't the right place to ask, but I figured I'd try here...

I have a computer running the following operating systems:

Linux Mint 17.2
Windows 7
Windows 10

Right now in grub, I only have options for Mint and W7, selecting W7 takes me to the windows bootloader where I can select between W7 and W10.
Is there any way I can have all 3 appear separately in the GRUB menu?

Many thanks for any help you can give me,

Old 12-03-2015, 06:10 PM   #2
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No - not automatically anyway.
That is an artifact of the way M$oft handle "dual-boot" of Windows. When you add a second Windows, they update the boot-loader of the currently installed system to load either. As far as grub (os-prober actually) is concerned there is only one set of Windows boot-loader code to be found - hence only one entry in the grub boot menu.

You could manually build a grub stanza for W10 I guess - never bothered personally.

Last edited by syg00; 12-03-2015 at 06:12 PM. Reason: Added manual comment
Old 12-03-2015, 06:39 PM   #3
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Are you using MBR? If so, you need both windows on a primary partition, at least their boot files. If you are using GPT, all partitions are primary so maybe not. You can have a separate windows Recovery partition and boot that and most factory pre-installed systems have this and they are on a primary partition. I would think it would be theoretically possible but you would need to have the boot files on the windows 10 partition also. I don't know how you would tell this easily since I believe the boot files are the same for 7 and 10. I expect this would be a project unless you are very familiar with the boot files and process of windows.

The method described is the standard way Linux will boot windows.
Old 12-03-2015, 07:15 PM   #4
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There's 3rd party software like Acronis OS selector for e.g.. Think you'd need to uninstall GRUB?

Back-up your personal data regardless of course... And, if you don't have microcoughed-windblow$ CD\DVDs? Back that up too.


Last edited by jamison20000e; 12-03-2015 at 07:20 PM. Reason: \added
Old 12-11-2015, 07:45 AM   #5
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Ah, thank you. Seems like it'll probably be a bit of a headache to get it working. Not really worth the minor convenience...
Thanks for the help though!


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