Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I can't seem to be able to install Windows 7 64-bit on a 2008 MacBook (64-bit dual core) from an external USB DVD drive.

I've done the following:

  • Performed a clean install of Mac OS X Snow Leopard

  • Installed all system updates

  • Run Boot Camp Assistant - when the system restarts I get an error stating "no bootable disc"

  • Used rEFIt, but I still get the same error

  • Made a bootable USB drive from an ISO of the Windows 7 installation disc, but I still get the same error

  • Tried using Windows 7 32-bit, Windows 7 64-bit and Windows XP, but I still get the same error

How I can resolve this?

share|improve this question

migrated from May 19 '11 at 8:24

This question came from our site for system and network administrators.

What brand of external USB DVD drive? If not Apple, can you borrow an Apple one from someone and see if that works? – Spiff May 19 '11 at 17:14
its a liteon. Is this is a know issue? – januszstabik May 19 '11 at 18:46

The reason why you can't do it is because Core Duo is technically not 64-bit, it's only 32-bit. It needs to be Core 2 Duo - that's 64-bit. A lot people get that mixed up thinking that the Core Duo generation was 64-bit, and I was one of them. So your only alternative is just the Windows 32-bit option.

That will explain your 64-bit issue in regards to the other issue. I am not sure, do you know if the external DVD drive you're using supports Mac? If it doesn't, it will not work. There's firmware on the hardware that Mac will recognize in order to use it. In most cases, when you buy any hardware, it will still be for both Mac and PC.

Double check on that.

share|improve this answer

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .