Circle with line through it mac usb boot

Any suggestions welcome. I would say you have some app in your User folder that does that, since OSX installs would not touch that. I use the Activity monitor to see who, and Console log to see what. That doesn't mean it's not caused by a user program, only that there's nothing that jumps out to me.

Hence why I decided to try the clean install. Disk errors are not fixed by reinstalling the OS. I think your drive is physically failing. Sorry for the late reply. Not Supported Several weeks after my reply above the computer is again running terribly. I imagine it's a disk problem.

When booting from USB, I get Circle with Line through it

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Linked Related 2. Hot Network Questions. Aug 29, 7: How is the flash drive formatted? Also, why do you need to reinstall via internet recovery?

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Oct 6, 4: Crazy as it sounds but even though the mac is recognising the backup USB pen-drive it just refuses to boot from it. When you get to the spinning wheel and the grey circle with the line through it, simply unplug the USB drive and plug it back in.

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It will then autoboot from the USB drive no problem. I tried this 3 times and it worked every time.

Trying To Install OS X on USB but Get Circle With Line Through It | Tom's Hardware Forum

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Apple TV Speciality level out of ten: Problems with Bootable USB After reading through many discussions I am now starting to wonder if I have 2 problems, but let's start with the original problem. Any suggestions are much appreciated. Thanks for Your Consideration.

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