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man pages section 1M: System Administration Commands

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Updated: July 2017



rem_drv - remove a device driver from the system


rem_drv [-b basedir] [-C] [-n] device_driver


The rem_drv command informs the system that the device driver device_driver is no longer valid. If possible, rem_drv unloads device_driver from memory. rem_drv also updates the system driver configuration files.

If rem_drv has been executed, the next time the system is rebooted it automatically performs a reconfiguration boot (see kernel(1M)).


The following options are supported:

–b basedir

Sets the path to the root directory of the diskless client. Used on the server to execute rem_drv for a client. The client machine must be rebooted to unload the driver.

Note - The root file system of any non-global zones must not be referenced with the –b option. Doing so might damage the global zone's file system, might compromise the security of the global zone, and might damage the non-global zone's file system. See zones(5).

Remove dangling device attribute nodes bound to the driver being removed. This causes any device ownership or permissions customizations made to any node not to be preserved if the driver is added back. Recommended for use when reprovisioning a machine from one configuration or use to another where past administrative customizations might not be desired.


Do not try to detach and unload device_driver, just modify the system configuration files for that driver.


Example 1 Removing the sd Driver

The following example removes the sd driver from use:

example% rem_drv sd
Example 2 Removing a Diskless Client

The following example removes the driver from the sun1 diskless client. The driver is not uninstalled or unloaded until the client machine is rebooted.

example% rem_drv –b /export/root/sun1 sd

Note the caveat on the use of the –b option in the description of that option, above.


See attributes(5) for descriptions of the following attributes:


See Also

add_drv(1M), kernel(1M), update_drv(1M), attributes(5), zones(5), devfs(7FS)