Windows – Can’t install Windows 8 Developer Preview

I have seen this before, most of the time it is a corrupt download or corrupt burn job, retry the download and burn it at a slow speed.

If this does not work the suggestion by Shinrai will get it installed. (Install from USB drive)

If you are installing Windows from USB and you are using USB3 port on your brand new laptop. You are upsetting Great Mystical Windows Spirit. Insert your USB key to USB2 port and "Missing Required CD/DVD Driver" error will go way. The clue that you are having this problem: when you click browse button and try to expand USB drive you get error that USB drive is not inserted which is strange as you just booted from this USB.

Credit goes to:
When installing: Missing Cd/DVD device driver ("A required CD/DVD drive device driver is missing)

SeajayF post

My Dell has USB 3 ports with a Texas Instruments controller. These are not included in the Microsoft Windows preinstall environment and as a result I have the error. So what the error was trying to say is "I cannot access the CD you are trying to install from", when what it is actually referring to is the USB flash drive.

Luckily there was a USB 2 port on the laptop also. When I boot from this port all goes swimmingly. If you don't have a USB 2 port and have a similar problem then you are going to have to customize your Windows PE to include the drivers or alternatively add your USB 3 driver via some other external media device e.g. USB floppy.