SD(9)

NAME
sd - device driver for SCSI subsystem

DESCRIPTION
Some Type 0 (T_DIRECT) scsi devices don't behave properly when some special scsi options are negotiated. See the QUIRKS section for info on how to disable some of these options.

QUIRKS
Each SCSI device can have problems that the driver needs to work around. See scsiconf(9) for more info on adding quirks.

SD_Q_NO_TAGS
    This quirk flags will disable the use of tagged queuing when sending commands to the drive.

SD_Q_NO_SYNC
    This will disable synchronous negotiation with this drive.

SD_Q_NO_FAST
    This will disable fast negotiation with this drive.

SD_Q_NO_WIDE
    This will disable wide negotiation with this drive.

FILES
/sys/scsi/scsiconf.h
    contains the definition of SD_Q_xxx macros.
/sys/scsi/sd.c
    files contains actual driver code

SEE ALSO
sd(4), scsiconf(9)

HISTORY
The sd manual page first appeared in FreeBSD 2.2.

AUTHOR
This manual page was written by John-Mark Gurney <gurney_j@efn.org>.