Relatively new to Macs, I'm used to Windows wanting to verify HD data integrity after an unexpected shutdown. I know they use different file systems, but do Macs need to do anything like this?
Mac OS X's default file system is HFS+ Journaled. This means that before files are written, the data is first written to a special log called the journal. In the event of application or system crashes, when the machine re-starts it will re-run all the remaining entries in the journal to bring the file system back into pristine order. In theory anyway.
That said, it is still probably a good idea to use one of the included utilities to verify your filesystem.
You can run fsck in the Terminal or use Disk Utility to check your hard drive if you want. After a Kernel Panic or power outage, this is probably a good idea.
Disk Utility is the simpler option, just log in as normal and go to
If you want to run
TL;DR No, you don't generally need to. But it's not a bad idea to run a utility.
After any non-clean shutdown (kernel panic, power outage, etc.) I boot to single user mode (command + s when starting) and run