SCD(4) BSD Kernel Interfaces Manual SCD(4)NAME
scd -- Sony CDU31/33 CD-ROM driver
SYNOPSIS
device scd
In /boot/device.hints:
hint.scd.0.at="isa"
hint.scd.0.port="0x230"
DESCRIPTION
The scd driver provides a data interface to the Sony CDU31 and CDU33A CD-ROM drives. The drive must be hooked to a Sony proprietary inter-
face card or a compatible clone.
FILES
/dev/[r]scd0a accesses BSD partition on the disc. Normally, there is only one file system on a CDROM disc.
/dev/[r]scd0c accesses the raw device.
SEE ALSO
/sys/dev/scd/scd.c
HISTORY
The scd driver first appeared in FreeBSD 2.0.5.
AUTHORS
The driver was written by Mikael Hybsch with code contributed by Holger Veit and Brian Moore.
BSD March 17, 2008 BSD
Check Out this Related Man Page
scsi-spin(8) System Manager's Manual scsi-spin(8)NAME
scsi-spin - spin up and down a SCSI device
SYNOPSIS
scsi-spin [-options...] [device]
DESCRIPTION
scsi-spin let the user to manually spin up and down a SCSI device.
This command is particularly useful if you've got noisy (or hot) drives in a machine that you rarely need to access. This is not the same
as the kernel patch that's floating around that will automatically spin down the drive after some time. scsi-spin is completely manual,
and spinning down a drive that's in use, especially the one containing the scsi-spin binary, is probably a really bad idea.
To avoid running in trouble with such cases, scsi-spin verifies that the device to work on is not currently in use by scanning the mounted
file system description file for a partition living on it and issue an error if this the case.
OPTIONS -u, --up
spin up device.
-d, --down
spin down device.
-e, --loej
load or eject medium from drive (use along with -u or -d )
-w, --wait=[n]
wait up to n seconds for the spin up/down command to complete. Default is to return immediately after the command was sent to the
device. Either repeat -w n times or set n to define the time to wait before to report a timeout.
-l, --lock
prevent removal of medium from device.
-L, --unlock
allow removal of medium from device.
-I, --oldioctl
use legacy ioctl interface instead of SG_IO to dialog with device (could not be supported on all platforms). -e and -w are not
allowed with this option.
-v, --verbose=[n]
verbose mode. Either repeat -v or set n accordingly to increase verbosity. 1 is verbose, 2 is debug (dump SCSI commands and Sense
buffer).
-f, --force
force spinning up/down the device even if it is in use.
-n, --noact
do nothing but check if the device is in use.
-p, --proc
use /proc/mounts instead of /etc/mtab to determine if the device is in use or not.
device the device is any name in the filesystem which points to a SCSI block device (sd, scd) or generic SCSI device (sg). See section
below.
SCSI devices naming convention
Old kernel naming convention
It is typically /dev/sd[a-z] , /dev/scd[0-9]* or /dev/sg[0-9]*.
scsidev naming convention
It is typically /dev/scsi/s[rdg]h[0-9]*-e????c?i?l? or /dev/scsi/<aliasname>.
devfs naming convention
It is typically /dev/scsi/host[0-9]/bus[0-9]/target[0-9]/lun[0-9]/disc (same for cd and generic devices) or short name
/dev/sd/c[0-9]b[0-9]t[0-9]u[0-9] when devfsd "new compatibility entries" naming scheme is enabled.
SEE ALSO scsiinfo(8), sg_start(8), sd(4), proc(5),
AUTHORS
Eric Delaunay <delaunay@debian.org>, 2001
Rob Browning <rlb@cs.utexas.edu>, 1998
03 September 2001 scsi-spin(8)