Unable to boot from USB drive MacBook Air
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Rapha-92
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Rapha-92 Posted messages 138 Registration date Status Membre Last intervention -
Rapha-92 Posted messages 138 Registration date Status Membre Last intervention -
Hello,
I can no longer boot from a USB stick on my MBA since this morning. When I hold down the "option" or "alt" key at startup, it takes me to a dropdown menu where I can... choose one of the Wi-Fi networks that the computer detects and connect to it. Once I've done that, nothing happens; I see the name of the network I'm connected to and... nothing, no going back, no progress... I want to point out that Ubuntu was installed instead of OsX and that after several restarts, everything was fine (since I'm stuck at startup, I can't do anything :/). I've already tried numerous combinations of keys mentioned on various forums, including the Apple site. Thanks and have a good day/evening! ;) (I want to emphasize that the only thing visible on the screen at startup is a folder with a question mark in the center, and it is all blinking.)
I can no longer boot from a USB stick on my MBA since this morning. When I hold down the "option" or "alt" key at startup, it takes me to a dropdown menu where I can... choose one of the Wi-Fi networks that the computer detects and connect to it. Once I've done that, nothing happens; I see the name of the network I'm connected to and... nothing, no going back, no progress... I want to point out that Ubuntu was installed instead of OsX and that after several restarts, everything was fine (since I'm stuck at startup, I can't do anything :/). I've already tried numerous combinations of keys mentioned on various forums, including the Apple site. Thanks and have a good day/evening! ;) (I want to emphasize that the only thing visible on the screen at startup is a folder with a question mark in the center, and it is all blinking.)
4 réponses
Hello,
Not knowing more details, what I can say at this stage:
If Ubuntu was installed instead of Mac OS on this MacBook Air, it obviously cannot boot into Mac OS from its own internal disk. Up to this point, everything makes sense.
As for the USB key,
In order for the Mac to accept booting from this key, it must contain a valid version of OS X compatible with the specific MacBook Air.
If the Mac, while holding the alt key during startup, does not show this USB key, it means it considers that the key does not contain the necessary or valid files for booting. (origin of this USB key?)
If this Mac was delivered with Mac OS 10.7 or OS X 10.8,
its internal disk contained a hidden recovery partition, but accessible by starting the Mac with the
cmd R keys pressed. This is also possible by booting with the alt key pressed. If this partition is not presented, it may have been erased during the Ubuntu installation. From this recovery partition, it would have been possible to repair or reinstall the OS X system.
If this Mac was delivered with Mac OS 10.6 or older,
you need to use the USB key that came with the Mac to reinstall the system.
Best regards
--
Have a nice day, or Good Night..:).
Francis
Not knowing more details, what I can say at this stage:
If Ubuntu was installed instead of Mac OS on this MacBook Air, it obviously cannot boot into Mac OS from its own internal disk. Up to this point, everything makes sense.
As for the USB key,
In order for the Mac to accept booting from this key, it must contain a valid version of OS X compatible with the specific MacBook Air.
If the Mac, while holding the alt key during startup, does not show this USB key, it means it considers that the key does not contain the necessary or valid files for booting. (origin of this USB key?)
If this Mac was delivered with Mac OS 10.7 or OS X 10.8,
its internal disk contained a hidden recovery partition, but accessible by starting the Mac with the
cmd R keys pressed. This is also possible by booting with the alt key pressed. If this partition is not presented, it may have been erased during the Ubuntu installation. From this recovery partition, it would have been possible to repair or reinstall the OS X system.
If this Mac was delivered with Mac OS 10.6 or older,
you need to use the USB key that came with the Mac to reinstall the system.
Best regards
--
Have a nice day, or Good Night..:).
Francis
