Repair Your Hard Disk in Single User Mode. Mac OS X has a built in disk diagnostic and repair program called fsck or file system consistency check. Unlike Disk Utility, which can only verify the current startup disk, fsck will verify and repair the current startup disk. Heres how to verify and repair your startup disk with fsck. Start or restart your Mac. As soon as you hear the startup tone, press and hold Command S on the keyboard. Imovie For Mac 10.6.8' title='Imovie For Mac 10.6.8' />Keep holding down those keys until you see a black screen with white lettering. Game Motocross Madness Full Version. This is called booting into Single User Mode. As soon as you see the black screen with white lettering, you can release the keys. The single user mode screen. As the Mac boots in this mode, the screen reports each step of the process. Wait until the scrolling white text stops. The last line should end in root. Right after the root prompt, enter the following sbinfsck fy. Press the Return key. Youll see the prompts in the picture above as each part of the hard drives directory is checked. Checking extents overflow file, Checking catalog file, Checking multi linked files, etc. It will take a few minutes. At the end, if your drive was OK, the screen will say The volume name of your hard drive appears to be OK. If any repair was made, youll see the prompt, FILE SYSTEM WAS MODIFIED. Then, youll see the root prompt again. Right after the root prompt, enter the following reboot. Press the Return key. Your Mac should restart normally. Desktop Ants Game. MacOSMacOS XMac OS. Movie-3.jpg' alt='Imovie For Mac 10.6.8' title='Imovie For Mac 10.6.8' />MacOS High Sierra brings new forwardlooking technologies and enhanced features to your Mac. Computer mac by Tranh Da Quy Tan Phu Khanh.