Q: prohibitory sign after clean install
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Apr 18, 2014 7:09 PMby Carolyn Samit,Ryan...
Have you tried a Safe Mode boot yet ...
Read here > Managing a prohibitory sign at OS X bootup
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Jun 16, 2014 10:00 PMby ryan haid,Still nothing. I made a custom USB drive so I could repartition the entire drive (including recovery), which hasn't done the trick. Two months later I'm still getting random freezes and prohibitory startup logo.
Read somewhere that the graphics card on this model tends to crap out after a few years, which can manifest itself in weird boot problems - any thoughts on this?
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Jun 17, 2014 4:36 AMby Barney-15E,That means it is missing key files necessary to startup the Mac.
You could try an NVRAM/PRAM reset, but I don't think it will help: http://support.apple.com/kb/HT1379
If you've tried to reinstall using your home-made USB installer, it is likely faulty. Grab your Snow Leopard install disk and use that to reinstall. You'll need to reformat the disk. Then, Upgrade using the App Store.
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Jun 17, 2014 3:22 PMby ryan haid,Resetting the PRAM was the first thing I tried, and while it did provide temporary respite from the never ending startup loop, it was not a permanent fix. It seems highly unlikely that the USB installer is faulty; I made it on another Mac and downloaded the Mavericks installation files directly from the App Store. And for the record, upgrading to Mavericks via the App Store was what triggered this mess.
Guess I'm heading to the genius bar, tail between my legs.
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Jun 17, 2014 3:49 PMby dianeoforegon,Do you have room on your drive to create a second partition? You can do this on a minimum of 30GB. This is pretty barebones for testing purposes only.
If yes, you can try installing Mavericks on the second partiton to see if the problems go away.
BTW, there is a Father's Day sale on the MacBook Airs this week at Best Buy. $100 off.
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Jun 17, 2014 4:04 PMby baltwo,Barney-15E wrote:
An installer made on another Mac may not contain the necessary drivers for the target Mac.
Huh? The installer app ahould be universal. AFAIK, your only applies to a final installation and if one tries to run a clone of one machine to a different kind of machine.
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Jun 17, 2014 4:09 PMby Barney-15E,baltwo wrote:
Barney-15E wrote:
An installer made on another Mac may not contain the necessary drivers for the target Mac.
Huh? The installer app ahould be universal. AFAIK, your only applies to a final installation and if one tries to run a clone of one machine to a different kind of machine.
There have been way too many incidents of that same scenario resulting in faulty installations. I don't believe it is universal at all. But, If someone wants to make a bunch on different machines and hash them, I might be convinced.
