Checking and repairing filesystems

When you boot the system after an abnormal shutdown, the fsck(ADM) utility runs automatically on the root filesystem. You can also set up your other filesystems to be checked automatically before they are mounted -- See ``Modifying filesystem mount configuration''.

Filesystem checks usually proceed transparently and without intervention. You can use the fsck(ADM) command to check filesystems at any time, but you must unmount the filesystem first. Never check a filesystem without unmounting it first.

To check filesystems manually, in the Filesystem Manager:

1. Select the filesystem to check from the list.

2. Select Check and Repair from the Mount menu, then select Selected Filesystem. If the filesystem is not in the list, select Other Local Filesystem.

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   NOTE: You can only check local filesystems. Check NFS filesystems on the system on which they reside. You can do this remotely using the Open Host selection of the Host menu. This requires user equivalence on the machine you plan to administer, as described in ``Adding user equivalence'' As on the local machine, non-root accounts require the sysadmin authorization to run the Filesystem Manager. See ``Assigning subsystem authorizations'' for more information.

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3. Specify the type of checking and what to do if the filesystem is corrupted, then click on OK. (See ``Check and repair options (HTFS, EAFS, AFS, S51K)'', if applicable.)

See also:

• ``Running fsck on a VxFS filesystem''

• ``dosfs filesystem components checked by fsck''

• ``How UNIX systems maintain files and filesystems''

• fsck(ADM) manual page (for command-line interface)