Scenario / Question: I need to check file system for errors using fsck. Can I run fsck on a mounted file system ? Solution / Answer: Running fsck on a mounted file system can result in data corruption. The two options are: 1) Change the running state of the system to single user mode and unmount [continue...]

Scenario / Question: First drive /dev/sda or /dev/hda failed in a RAID 1 configuration and now system will not boot. System booting but only getting a prompt that shows grub and a flashing cursor. Prevent system from crashing on reboot if first drive in RAID Array fails. Solution / Answer: Use [continue...]