Hot answers tagged boot
If you are able to boot from external drive, then your boot sector has a problem (obviously). Using the cmd+v will boot in Verbose mode if you care to investigate where it hangs up. Using the cmd+r and restoring os is the best option here.
In OS X, the routing table is mostly managed by configd, based on the network settings in /Library/Preferences/SystemConfiguration/* and the live status of the network interfaces (e.g. is there something plugged into the ethernet jack at the moment?). The network settings can be examined by looking in ...
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