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Running Windows (or anything else) on your Mac Discussion of Classic or running Windows, Linux and other OSes on the Mac.

Followed Bootcamp Instructions, No Bootable Device Found


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macmanman

 
Member Since: Jul 17, 2014
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I followed bootcamps instructions. Have a 16Gb PNY thumb drive. Bootcamp installed the drivers, the .iso file, and restarted the computer. I didn't know then you were supposed to interrupt the restart, so it restarted to my mac HD automatically. I restarted and interrupted and selected the "Windows" drive to install, and I get a black screen that says "boo bootable device found, insert disk and press any key...."

Why doesn't the installer start?

I have a macbook air OSX 10.9.4, I'm trying to install Windows 8.1 Professional via .iso file and thumb drive

Please help

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harryb2448

 
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Did you format the thumb drive FAT and burn the .iso file to it? With no optical drive the thumb drive needs to work just like the DVD.

Have a read of this may help:-


https://discussions.apple.com/thread/5266433

Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!
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macmanman

 
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The thumb drive is formatted to fat but I don't know how to burn the iso file to it. In disk utility the "burn" option isn't highlighted when I select either the thumb drive or the iso file...
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macmanman

 
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I followed the instructions on the link as well, same error. This is what I have done:

- have 16Gb USB stick, format it using disk utility to FAT
- open BC and allow it to create boot disk, and install windows support and windows
- once it install the ISO image and support it restarts my computer
- I hold option and select the "windows" hard drive
- it says "no bootable device found, insert disk and press any key"

The bootcamp disk shows in the Disk Utility but I can't boot the computer using it

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chscag

 
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The bootcamp disk shows in the Disk Utility but I can't boot the computer using it
Then you're doing something wrong when creating that disk. It has to be bootable or otherwise you will not be able to install Windows. (You must boot from the flash drive, not your OS X partition.) Keep in mind that the flash drive substitutes for a DVD installation. A DVD which contains Windows is bootable, however, your Mac has no optical drive, therefore you must boot from the flash drive which contains Windows and the driver files.
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macmanman

 
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I used another download and it seemed to work better however this time BootCamp said it only supports Windows 64-bit versions. The .iso file I got was directly from Microsoft for Windows 8.1, I called their support and they directed me to the .exe that I installed as an .iso file on the flash drive. They only have one download, how am I to know if it's 32-bit or 64-bit?
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The Microsoft Windows 8.1 DVD probably contains both the 32 bit and 64 bit versions, however, I have no idea what their download consists of. But as you found out, you can not use a 32 bit version of Windows with your Mac as it's not supported. I would call MS support again and make sure they direct you to the 64 bit exe download. I'm fairly certain from remembering the difference between the 32 and 64 bit versions of Windows 7 that the 64 bit version exe of Windows 8.1 will be a larger file.

Also... an exe file has to be executed (run) in order to obtain a bootable iso. You can not place the exe file on the flash drive and expect it to be bootable; it is not.
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