dual boot win 7 x64 ultimate with 10 preview on 2 hd's

[jbm]

after installing 10 to a separate hd it boots up and runs.

But if I try booting 7 I get an error the digital sig of

winload.efi can't be verified.

 

anyone else tried dual booting?

I was curious how it was with real hardware.

 

thanks

 

JBM

[jbm]

I reinstalled so that my computer booted in BIOS mode

instead of UEFI.  Both 7 and 10 are running

Now to see what 10 offers.

So far I think I'll keep 7

 

JBM

[JorgeA]

Yeah, it wasn't until I read somewhere that you had to turn off UEFI booting, that I was able to proceed with the TP installation.

 

You can turn UEFI booting back on afterward, without problems, if that's important to you.

 

--JorgeA

[jbm]

Thanks for your help.

When I disabled UEFI boot windows 7 would not boot at all.

Kept getting a message saying it wasn't configured correctly.

so I ended up installing 7 again then 10 TP 

Don"t have a drive larger than 2TB so really no diff.

[boyans]

There are some benefits using UEFI boot.

At least it is faster compared to BIOS boot (for Window 7 you have to disable Secure boot so it will not be safer).

GPT style disks do not have the limitation of 4 primary partitions !

 

Most OS now support UEFI boot - for example Ubuntu if you want to try a Linux version (dual-boot with Windows).