No, I got an error saying, "unable to partition drive from USB" but I think I got this error because of how old this USB is. I am currently trying to find alternate solutions....
Solution 1: Burn my ISO to a DVD and use that as my boot disk
Solution 2: Try a different external hard disk or USB
Problems with solution 1 - error: "cannot partition disk because some files cannot be moved"
...have not tried solution 2 yet.
This method worked for me as I was having the same problem the others were. Though I tried this first, and it didn't work. So I read on and found a post saying something about making a copy of the info.plist file, modifying it, then replacing the original with my MBA31 string on the top. Worked like a charm, un-grayed, and with another reformat of my usb stick using diskutil, the files were copied. Thanks.
It's not the order that's the problem... if you notice, all the entries are rounded off to the tens place... I have a MBA3,2. It didn't work when I used MBA32, but then I changed it to MBA30 and it worked like a charm... thus, it is not looking for the specific identifier but the series (perhaps). Thanks
I can confirm that adding lines to plist.info helps definitelly.
I have MBP 5,5 and fresh install of Lion 10.7.3 (on OCZ Vertex 2 60GB)
So I decided to buy Optibay and to put 640GB HDD in it - to split it for Windows and Users dir (later is not possible??? - to split HDD to NTFS and HFS)
Anyway, first option Create Windows 7 boot disk was greyed out, untill I edited contetnt of Boot Camp Assistant (info.plist)
I added two lines:
Just copy original file somewhere, edit it in Text Edit, and move it back to original dir (confirm that you want to replace). For security - first copy original info.plist on safe (some other dir).
After that you have option to create Windows 7 boot disk with required drivers.
Thanks to all of you commented in this post.
I confirm this solution!
Bootcamp is creating that usable iso image on a flash drive at the time I am writing this.
Just as a warning, be careful editing those plist's if you don't have something like XCode to edit them with. And even if you do have XCode, be careful anyways.
And jacktourist, you can have my internets. No really, I insist. This problem had been bugging me for hours until I read your solution.
I tested this because my option to create a USB disk was greyed out. I edited the info.plist file and moved, in my case, MP51 to the top and double checked that my syntax was correct. The first time I did this it did not work even with moving up my hardware model. What I did to correct this was open the .plist file in Text Edit. When I tried to edit the file directly it asked me if I wanted to duplicate. I said yes. I edited the duplicated file. I then saved it to my desktop. I right clicked on the Boot Camp Assistant in Utilities and browsed to the info.plist file and deleted the original. I was asked to authenticate to remove the file. Once the file was deleted I then copied the duplicated file back (name it exactly the same). I was asked to authenticate again. Once I did that and the file was copied I closed all windows and re-openned Boot Camp all was good I had the option to make a USB drive. I then proceeded to make my Windows installed boot drive.
So at first the orginal process did not work for me but with a little trial and error all worked in the end. I am using 10.7.3 Lion build with Lion Server 10.7.3 installed.
Ok guys, that USB creation went fine - BUT !!! I can not boot from such USB on my MacBook Pro 5,5
On other hanf that USB can boot up my HO dv6 notebook.
Apple still got me, after several days of trying, I am still not able to install Windows 7 64bit PRO on second HDD in Oiptibay.
Any ideas? Please just do not point me to DVD - I do not have USB case for Superdrive (and I do not want to buy one).
Thanks for any good advice.
ps. rEFIt doesn't work too ;(
I know I'm coming in late to the conversation, but there's another way to "burn" an ISO to a USB drive, using UNetbootin. See this guide:
If you have the Windows 7 ISO, it's a two step process: Install UNetbootin and Burn the ISO.
That way you don't need to edit system files to get Boot Camp to make it happen.
Just a thought.