Name
diskd - disk daemon; wait for disk to be inserted
Note
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Description
The diskd command has the following syntax:
diskd [-d drive] [-i interval] [-e command]
Diskd waits for a disk to be inserted into a given drive, and then
either executes the command or exits. This program can be used to
automatically mount a disk as soon as it is inserted.
Warning
This program works by switching the motor on for a very short interval,
and then seeking to track -1. This might damage hardware in the long
run. Amigas, which also use these techniques, are known for having
problems with their disk drives no longer spinning up properly after a
few month of usage.
Options
-d drive
Selects the drive to observe for disk insertion. By default,
drive 0 (/dev/fd0) is observed.
-i interval
Selects the polling interval. The interval is given in tenths of
seconds. Default is 10 (one second).
-e command
Gives the command to be executed when a disk is inserted. If no
command is given the program simply exits. Typically, the
command mounts the disk. It can be a shell scripts which probes
for several filesystems and disk geometries until it succeeds.
Bugs
* Automatic unmounting cannot yet be handled. It is indeed not
enough to scan for disk removal, because when the disk is
removed, it is already too late: There might be some buffers
needing flushing. However, the fdmountd program allows
automatic unmounting by using the SYNC mount options, which
switches off write buffering (see section fdmount).
* The drive motor is running all the time, and on some computers,
the drive led flickers at each time the drive is polled.
See Also
Fdutils’ texinfo doc