To avoid data corruption, which of the following should you do before performing fsck on a file system?

To avoid data corruption, which of the following should you do before performing fsck on a file system?

• Reboot the machine
• Create a new data partition
• Unmount the file system
• Ensure the file system is mounted 

 

EXPLANATION

The fsck command is used to check and repair one or more Linux file systems. Running fsck on a mounted file system can cause data or disk corruption. Instead, you can do one of the following:
(a) Take down system to single user mode and unmount the system
(b) Boot from the installation CD