Hi Mary
Thanks but my Windows 8 is not an upgrade but a full version as is Windows 7 so I am entitled to have both running in separate partitions.
Nick
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I want to dual-boot my PC with Windows 7 and Windows 8. I've created a second partition on my hard-drive using Windows 7 but when I try to install, I'm told that I must use GPT with an EFI system.
When I searched to find what that meant, I saw that one alternative to wiping my hard-drive was to enable CSM.
Looked in my BIOS and I found that CSM is enabled but there are a number of other options under it that I assume are the key to making this work.
My M/B is a Gigabyte GA-Z77X-UD3H.
The options I can see under CSM are:
Boot Mode Selection - set to UEFI and Legacy
PXE Boot Opton Control - set to disabled
Storage Boot Option - set to legacy only (can also be Legacy First or UEFI first)
Display Option - set to legacy only
Which of these is the one I need to change? And what's the impact of selecting UEFI First over Legacy First and vice versa?
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Hi Mary
Thanks but my Windows 8 is not an upgrade but a full version as is Windows 7 so I am entitled to have both running in separate partitions.
Nick
If you are installing the win 8 upgrade, you cannot keep win 7. The license for win 7 will be upgraded to 8 and you do not retain any rights to win 7. Win 8 will install on the same partition as win 7. It will not install on a second partition. You cannot use or transfer win 7 after the upgrade.
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Windows 8 EULA
What about upgrading the software?
The software covered by this agreement is an upgrade to your existing operating system (XP SP3, Vista, or Windows 7) software, so the upgrade replaces the original software that you are upgrading. You do not retain any rights to the original software after you have upgraded and you may not continue to use it or transfer it in any way. This agreement governs your rights to use the upgrade software and replaces the agreement for the software from which you upgraded. After you complete your upgrade, additional software will be required to playback or record certain types of media, including DVDs.