Can‘t create a Windows Seven USB drive using Bootcamp

Bootcamp doesn't show the first option, i was trying to find a way around using bootcamp. Is there any way to do that?

I'm sorry, but i'm confused. How can you unmount/remove the ISO when the Bootcamp is using it and won't let you? The only time you can unmount it is when the error appears, but then after unmounting - nothing happens. The bootcamp is stucked on "Copying Windows FIles". I've tried everything!

Trying to set up a Windows partition on a new imac, with updated OS. I've done everything recommended by SpinDoctor, Danny joni and Tirath Shah but I still have the same error: the USB drive cannot be used.

I've restarted between tries.

Disk utility finds no problems with the drive. It worked perfectly when I set up a partititon on my macbook air a while back.

Is Mavericks still in beta, or are macs just flakey? I'd be really grateful for a solution.

It sounds like you have a port issue. Have you tried another disk with no problem? I have setup 10 lab machines with a USB build from BootCamp Assistant in Mavericks without any glitches. It was quite simple and pain free, as long as you format the USB correctly.

Thanks for responding. I tried another USB stick but had same problem. Then tried downloading the latest windows support software from the Apple website (version 5) and copying it manually to the USB. Then installed windows. The USB was found and started installing, but the installation failed before completing.

" intel chipset" was the file being processed and the error was

Driver IRQL not less or equal (storahci.sys)

I followed the instructions for repairing the support software installation twice, but it fails at the same point each time.

A pain because apart from anything else the bootcamp control panel and the system tray is not installed, so one less way of getting back to the Mac.

The Windows version is 8 Pro 64-bit and the serial no. on it is X18-06126-01.

What is most likely here? That the USB was corrupt?

And is this a different problem to this thread - if so how should I re-raise it elsewhere? Sorry, I'm new to this discussion list.

I just noticed that yo are using W8. Have you tried this with W7? I haven't tried 8, since I'm not interested in running that OS. I know that W7 works fine, since I've done a bunch of them! If that works, try the W8 upgrade. If I have a W8 installer I could give it a try, but alas we don't have that disk here...

Likewise, I don't have a copy of Windows 7 to try, but the windows support software web page lists W8 and indicates that version 5 of the software is the one to use.

That doesn't make any sense.

Bootcamp Assistant formats the USB drive before it starts copying files, so the existing format should not matter.

Also whatever is causing this problem, I wish it could tell me the problem was going to happen BEFORE spending half an hour copying files.

I've spent 4 hours sitting here doing this over and over.

I encountered this problem too. I was downloading the latest support software when my internet broke down and of course stopped the process so I had to re-do it all over again since the bootcamp assistant reformats the drive. The first time it happened, I simply reformatted my 8G USB and started up the process again, my internet yet managed to fail once again so I decided to opt out of downloading the essential drivers for now. However, when I got to the part where I restarted the process, it gave me this annoying error that we can't seem to all get rid of.

I managed to fix it though doing this:

1. Reformatting the USB from Disk Utility.

2. Restarting my system.

3. Making sure the W7 ISO file is not mounted.

I hope this helps and goodluck to you guys.

Hi,

I too have the same problem.

i did some research and i got the its solution.

USE 64 BIT ISO file then you can create bootable USB.

Thank you!

I made a guide on how to install windows on a OSX Partition without an Optical Drive and without booting on USB

I hope it helps

http://forums.macrumors.com/showthread.php?p=20584499#post20584499

Just make sure you eject all the utilities disks and it should be good. I've been using a Sony USB for bootcamp but didn't work initially. But after I ejected the utility disks, it worked.