I have installed windows 7 64 bit now i want to install windows 10 in another hard disk partition because i want dual boot so i can use both win7 and win10. The problem is, when i try to install win 10 i cant select any drive to install and the error is like "The selected disk has MBR partition table, windows can install only in GPT disk".
So what is the solution to use both win 7 and win 10 ?
Boot the Windows 10 USB flash drive in legacy BIOS or CSM mode. You are booting it in UEFI mode. Apparently your hard drive is partitioned as MBR which means the computer is booting it in legacy BIOS or CSM mode (CSM is just UEFI emulation of legacy BIOS). When you have the list of boot options up where you select the USB flash drive as the boot source, it should be listed twice. One will say UEFI, and the other will just say USB or something like that. You want to pick the option that does not have UEFI in it.
If that doesn't work, there are ways to convert the hard drive to GPT and enable it to be booted in UEFI mode.
Last edited by NavyLCDR; 13 Feb 2017 at 11:41.
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