Can't install OS X from usb thumb drive

i've tried installing Lion 10.7.4 from my usb thumb drive but when I select the drive from the start screen by holding down the Option key, it lists my usb as an EFI drive and it boots straight into Lion. How can I make it install Lion instead of booting straight away?

Did you forrnat the drive properly

OS X Mountain Lion: The Mac-Forums Guide | Mac-Forums Blog

louishen said:

Did you forrnat the drive properly

OS X Mountain Lion: The Mac-Forums Guide | Mac-Forums Blog

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When I put the usb drive into my MBP, I partitioned it as 1 drive using Mac OS Extended (Journaled) format.

How did you place Lion on to the thumb drive? Did you use the instructions as given here?

chscag said:

How did you place Lion on to the thumb drive? Did you use the instructions as given here?

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Yes that is exactly how I did it. I have suspicions that the EFI on the usb thumb drive is causing the problems. My other usb thumb drive, a Sandisk, worked perfectly well for both Lion and Mountain Lion.

You have to partition it AND use the GUID partition table option otherwise it wont boot

louishen said:

You have to partition it AND use the GUID partition table option otherwise it wont boot

Click to expand...

Yes, I've done all that but it still won't install after copying the InstallESD.dmg to it.

Update: Today I bought a new Lexar 8GB usb thumb drive and everything was perfect and now installs as it was meant to. My suspicions that my previous usb thumb drive was at fault appear to be correct.