I read in many places that you should always do a "Verify Disk" in Disk Utility and resolve any errors before upgrading to Lion (currently running the last version of Snow Leopard on a MacBook Pro mid 2010).
I get the following error(s): "Incorrect number of thread records" and "Incorrect volume file count"
What is the severity of these errors? Should I be concerned?
I just finished "restoring" a USB thumb drive to a Mac OS Install DVD for Snow Leopard 10.6.3 (mid-2010). Note that the USB drive is equivalent to the install DVD and not an actual installed OS. As I understand it, it is possible to boot from my newly minted Mac OS Install USB to run the "Repair Disk" without entering the OS. (where I can fix my problem and go about my business).
Is my understanding correct? Does running the Repair Disk (from a USB, or in general) pose any risks? Is there anything else I should know?
I have a Time Machine backup going, if that makes any difference.