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Windows 7: can't boot to 64 bit windows 7 retail disc

31 Oct 2009   #1

xp and 7
can't boot to 64 bit windows 7 retail disc

I wanted to custom install 64 bit 7 to a new drive on my xp 32 system. The 64 bit disc wouldn't a "can't use this 64 bit disc on 32 bit system". Wasn't able to boot to this disc either (familiar with bios boot priorities). Figured I would install 32 bit to new drive...and it worked fine...took a half hour. But I still can't boot from the 64 bit disc (pre-sale retail disc from Costco) to change the 7 32 bit to 64 bit. The disc won't boot..and if I put the disc in when either 7 or xp is running it says this disc isn't compatible with a 32 bit system. Any idea's?....I so don't want to call India. Thanks in advance.

My System SpecsSystem Spec

31 Oct 2009   #2

Windows 7 Ultimate 64-bit

I got the same message. I thought the labels on the DVD's meant the OS you were using to load and ended up loading 32-bit. I went into BIOS and cancelled all boot selections except the DVD drive. Put the 64-bit DVD in and rebooted. It ended up booting just fine. I had the original OS on an IDE drive and started 7 on my RAID 0 array, so when I reloaded with 64-bit, it was only writing on top of the first attempt (32-bit 7), so original OS remained intact. It was XP Home that I had to buy to get my new computer build going until 7 was released (lightning trashed the old MB and RAM).
My System SpecsSystem Spec
31 Oct 2009   #3

Windows 7 Ultimate 64bit

Is it Windows 7 ready?
Windows 7 Upgrade Advisor

Also,id advise downloading paragon

From there reformat the drive just incase there was a glitch,and then try a fresh install.

Also remember the 64bit OS needs at least 20GB partition space just to run.

My System SpecsSystem Spec


 can't boot to 64 bit windows 7 retail disc

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