Mac OS X 10.8.3 Bootcamp on 3 TB iMac

THANK YOU

THANK YOU

THANK YOU 🙂

I just got off the phone with APPLE as i am still within my 90 day support window. They are having me renstall OS X as they feel there was some files that did not get installed on the last 10.8.3 update. Hopefully, this will fix the issues. Thanks again for the link

Im having the Same issues here. I have a 27" i5 iMac12,2 with an aftermarket Seagate Baracuda 3TB and i cant seem to get Bootcamp to work.

I have done a fresh install with a boot USB i created with my 10.8.3 Mountain Lion i have purchased from the App Store so i didnt need to update to 10.8.3 the OS started life as 10.8.3 (did it this way to eliminate an unsucsessful update) and boot camp comes up with the error "The startup disk must be formatted as a single Mac OS Extended (journaled) volume or already partitioned by Boot Camp for installing windows".

Funny thing is if i shrink my 3TB partition to 2.2TB and under boot camp runs fine.

Wasnt that the entire purpose for the 10.8.3 update?

JEDI

Hello. Does anybody know how to fix this yet? Similarly to other users here, I have read many topics about similar problems but have not found a solution yet.

My problem is this:

I have a recent iMac 27 (purchased new this year) with a 3TB Fusion drive.

I am trying to install Windows 8 from an ISO with Bootcamp.

Bootcamp Assistant works perfectly. I am able to partition my drive and create an installation USB disk. I use the Bootcamp software to download the latest support and indicate that I am installing "Windows 7 or later".

The initial automated reboot brings me to a black screen. Nothing happens.

When I reboot and press Alt to show boot options, I can boot into OSX, Windows or EFIBOOT.

OSX works as per normal, Windows boots into black screen, EFIBOOT boots into Windows 8 installation;

However, EFIBOOT installation does not progress further than the partition selection screen. I can format and the Bootcamp partition, and it seems to work (no error appears), but the next button remains unusable and the note about GPT and MBR and EFI (I don't remember what it says -- these terms mean very little to me) remains.

I have tried formatting the partition using the command prompt, but I have the same result.

I have read that the installation will only work via booting from the Windows partition -- NOT from the EFIBOOT (USB stick) -- because apparently this partition contains some wonderful piece of Apple software that presents some deceptive information to Windows so that it will successfully install. Perhaps that's wrong - but it doesn't seem to be working for me either way.

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Any clues yet? Is it actually possible?

Okay, I have found a solution for this problem. It has taken me some searching to find this solution, so I hope this will help somebody.

Each time I tried to perform this, there was a USB drive in the "first" USB port, an iPhone charging cable in the 2nd, and my Bootcamp USB thumb drive in the third.

No matter what I did, I'd either get a black screen or the "No bootable device" error, unless I nominated to boot from EFIBOOT, which doesn't work properly.

The solution was to remove the USB hard drive and the iPhone charging cable and use the Bootcamp USB thumb drive in the first USB port. It is suddenly bootable, and booting from the Windows partition now works. Setup and format within the setup worked properly and I am now installing Windows 8.