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I am using the Boot Camp Assistant to make a bootable USB. However I get either a black screen, or a message saying No bootable device found - Insert one and press any key

My USB used to work for Linux and Windows previously, so it shouldn't be a hardware related issue.

I have tried the following:

  • I repaired every disk I possibly could.
  • I tried pluging it into a different port (that resolved a linux installation problem I had earlier)
  • I tried using the dd command instead of using bootcamp like this: sudo dd if=/path/to/windows.iso of=/dev/rdisk1 bs=1m
  • Booting the disk from Option menu (That causes the black screen)
  • Using rEFInd to boot into Legacy OS. That causes the message.
  • Using rEFInd to boot into the USB disk. That causes the black screen.

Later I will post diskutil list and other outputs on request.


Cannot detect bootable USB was a previous problem I had that I fixed. In this problem, the USB got detected, but it showed a black screen. The steps I used to resolve the previous problem do not work here.

  • possible duplicate of Cannot detect bootable USB – Ruskes Aug 8 '15 at 2:32
  • @Buscar웃 That was my earlier question with different symptoms and problems. The solution was to plug it into a different port. – TheBro21 Aug 8 '15 at 12:11
  • What model Mac? No all Mac models can boot Windows installer from a USB port. This can be true even if you can boot a Linux installer from a USB port. – David Anderson Aug 9 '15 at 20:50
  • @DavidAnderson Macbook pro mid 2012 (I think). However I booted the windows USB previously on the same mac so I don't think ot is the issue. My OS (10.9) is the version I am using – TheBro21 Aug 10 '15 at 10:45
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    Unless the flash drive is bad, I am out of ideas. I assume you created a FAT formatted partition before booting from the Flash Drive. What I mean is I assume you are trying a BIOS/MBR install and you have confirmed you have a hybrid partitioned internal disk. You could install just using the iso file, but that is a lot of extra effort that you should not have to go through. – David Anderson Aug 10 '15 at 12:40

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