Dual-boot Win8.1(Primary) and Win7: GPD Error

joar1001

Reputable
Aug 10, 2014
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4,510
How can I dual-boot Windows 8.1 and Win7? When I (in Win8.1) create a new partition, and boot up Win7 setup from usb, it says "Disk 0 Partition 'xx'", " Cannot be used. Because it is of the GPD style. Can I fix this without formatting my whole harddrive?

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When trying to install Win7 with Win8.1 booted up, it says that there is no temporary space for the files, even though i've got 900GB..

I have tried with both UEFI and Legacy boot...
 

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