How to install windows 7 x64 bits in the 2nd HDD with usb

[159159159]

I wanted to install windows 7 Ultimate x64 bits in my 2nd HDD to avoid data loss and to keep the windows 7 Ultimate x32 in the 1st HDD.
I have the Windows 7 Ultimate x64 iso, and i burned it in a USB with ISO2Disc.
I would like to know how i can see the windows installation screen when booting my pc.
My motherboard is ASRock H61M-VG3
Thanks for your answer.

 

[USAFRet]

You have 2 individual licenses for Win 7 Ultimate?

Disconnect the current Win 7 32bit drive.
Boot from your USB
Install on the other drive.


Why have both? Just run the Win 7 64bit. It can run everything the 32bit OS can.

 

[159159159]

so, i cant install Windows while the 1st HDD is plugged in?
isnt that i want both, is just that if i install Windows in the 2nd drive will be faster. "it doesnt have anything important" but the 1st drive has important data! to avoid the need of formatting the 1st drive i wanted to install windows x64 in the 2nd drive.

 

[USAFRet]

so, i cant install Windows while the 1st HDD is plugged in?
isnt that i want both, is just that if i install Windows in the 2nd drive will be faster. "it doesnt have anything important" but the 1st drive has important data! to avoid the need of formatting the 1st drive i wanted to install windows x64 in the 2nd drive.

If you install Win 7 64 with the Win 7 32bit drive still connected, bad things will happen with the boot info on that 32bit drive.

You can install the 64bit on the second drive, and choose which one to boot from when you power on.
But don't install the 64bit on the second drive with the other one still connected.
Reconnect it after.

But there is zero reason to have both installed.

 

[159159159]

ok, i will do that and see what happens. then i will connect the 1st drive again.

 

[159159159]

i installed windows x64 7 without using a CD nor USB.
i just installed it without unplugging 1st HDD and now everytime i start my pc i just need to choose if i want to boot the x32 or x64 bit windows. thanks for your help!
even though i found a solution by myself.