What can I do when my MacBook Pro doesn't boot up after the latest so update is installed? I get a message that says Mac OS version not yet set
I Cannot start my Mac since updating the os. I get a message that reads is version not yet set
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- Reset SMC and PRAM/NVRAM
Intel-based Macs: Resetting the System Management Controller (SMC)
- Try a Safe boot
OS X: What is Safe Boot, Safe Mode?
- Then try booting to Recovery and repairing the startup disk
- Last, reinstall the the OS