5.4. Checking File System Integrity

5.4. Checking File System Integrity
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This section explains how to check existing file systems for errors.

	Note
	Before mounting a local file system with read-write access or as the root file system, and after any system crash, it is strongly recommended that you check the file systems you plan to mount.

Procedure 5.5. Checking a UFS File System

Check the file system using the fsck command as follows:
host% rsh target fsck raw_device
where raw_device is a raw mode special file indicating a partition such as /dev/rda0a.

Procedure 5.6. Checking an MS-DOS File System

Check the file system using the fsck command as follows:
host% rsh target fsck_msdos raw_device
where raw_device is a raw mode special file indicating a partition such as /dev/rhd0a.

If no errors are found, both fsck and fsck_msdos display information on the file system in use. In case of errors, both fsck and fsck_msdos attempt a recovery procedure, optionally requiring confirmation. If you want to run either command in non-interactive mode, use the -y option.

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5.3. Creating a File System	Home	Chapter 6. Mounting and Unmounting File Systems