1.86GHz or 2.13GHz Processor, 128GB or 256GB Flash Storage

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OSX installation fails (reboot before any screen comes up)

After starting upgrade from 10.6 to 10.8 the system don't started. I tried to reinstall 10.6 from DVD and USB stick, but before the initial setup screen come up the system restart. the same happens with 10.8.

There is also no possibility to use the recovery disk Assistant, the system restarts before I see any screen.

If I use a Windows7 DVD I can install it without any problem. Does anybody have a hint for me what I can try to get my OSX back?

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It looks like there is a problem with my 128GB Samsung flash disc. If I format it with HFS+ (using the Gparted boot disc) the macbook doesn't restart. Then it see the screen to shut down the computer in several languages.

When I delete the partition the OSX installer everytime restart the system without showing anything.

But why works Gparted and Windows boot discs? I have the problem only with OSX .

Any help/advice appreciated.


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As soon as you hear the chime press and hold down the COMMAND- R keys until the menu screen appears. Alternatively, after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD

You might try holding down N for a network boot, (you'll have to have a computer running the install disk on a shared optical drive.)

First you must erase and reformat the HD you can't install an OS on a corrupted HD.

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During the Win7 installation test I made the mistake and deleted ALL partitions from disk.

Now I only can insert OSX installation USB stick, but before I see anything from the setup, the system restart.


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Do you have a second Mac? If you do you could try connecting the MBA in target disk mode (hold the T key when it boots) to the other Mac using ThunderBolt. That way you can access the drive without accessing the boot sectors so you can rebuild things.

You may need to update your EFI firmware (Apple TN on EFI update 2.2)

Otherwise you may need to pull the drive out and mount it to the other Mac via an external HD case to access it (if your MBA doesn't have TBolt).

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I have one Vmware with MAC, but MBA don't have a ThunderBolt connection.

I have ordered a screwdriver for the MBA air to open it. Will try to connect it to my VMWARE and restore it.


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Markus Raffl will be eternally grateful.
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