diff options
Diffstat (limited to 'share/man/man4/sd.4')
| -rw-r--r-- | share/man/man4/sd.4 | 44 |
1 files changed, 25 insertions, 19 deletions
diff --git a/share/man/man4/sd.4 b/share/man/man4/sd.4 index cd6ef808624..a29e085b8f2 100644 --- a/share/man/man4/sd.4 +++ b/share/man/man4/sd.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: sd.4,v 1.6 2001/08/03 15:21:16 mpech Exp $ +.\" $OpenBSD: sd.4,v 1.7 2001/10/05 14:45:53 mpech Exp $ .\" $NetBSD: sd.4,v 1.3 1996/10/20 23:15:23 explorer Exp $ .\" .\" Copyright (c) 1996 @@ -40,8 +40,8 @@ The .Nm driver provides support for a .Tn SCSI -disk. It allows the disk -to be divided up into a set of pseudo devices called +disk. +It allows the disk to be divided up into a set of pseudo devices called .Em partitions . In general the interfaces are similar to those described by .Xr wd 4 . @@ -67,7 +67,8 @@ When the .Tn SCSI adapter is probed during boot, the .Tn SCSI -bus is scanned for devices. Any devices found which answer as +bus is scanned for devices. +Any devices found which answer as .Sq Em Direct type devices will be attached to the .Nm @@ -110,7 +111,8 @@ driver. .\"respectively.) On many systems .Xr disklabel 8 -is used to partition the drive into filesystems. On some systems the +is used to partition the drive into filesystems. +On some systems the .Nx portion of the disk resides within a native partition, and another program is used to create the @@ -119,8 +121,8 @@ portion. .Pp For example, the i386 port uses .Xr fdisk 8 -to partition the disk into a BIOS level partition. This allows sharing -the disk with other operating systems. +to partition the disk into a BIOS level partition. +This allows sharing the disk with other operating systems. .\"If an uninitialized disk is opened, the slice table will be .\"initialized with a fictitious .\".Fx @@ -143,7 +145,8 @@ The following .Xr ioctl 2 calls apply to .Tn SCSI -disks as well as to other disks. They are defined in the header file +disks as well as to other disks. +They are defined in the header file .Aq Pa disklabel.h . .Pp .Bl -tag -width DIOCSDINFO @@ -154,13 +157,15 @@ disks as well as to other disks. They are defined in the header file .\"implemented. .It Dv DIOCGDINFO Read, from the kernel, the in-core copy of the disklabel for the -drive. This may be a fictitious disklabel if the drive has never +drive. +This may be a fictitious disklabel if the drive has never been initialized, in which case it will contain information read from the .Tn SCSI inquiry commands. .It Dv DIOCSDINFO -Give the driver a new disklabel to use. The driver +Give the driver a new disklabel to use. +The driver .Em will not write the new disklabel to the disk. @@ -168,13 +173,14 @@ disklabel to the disk. Enable or disable the driver's software write protect of the disklabel on the disk. .It Dv DIOCWDINFO -Give the driver a new disklabel to use. The driver +Give the driver a new disklabel to use. +The driver .Em will write the new disklabel to the disk. .It Dv DIOCLOCK Lock the media cartridge into the device, or unlock a cartridge previously -locked. Used to prevent user and software eject while the media is in -use. +locked. +Used to prevent user and software eject while the media is in use. .It Dv DIOCEJECT Eject the media cartridge from a removable device. .El @@ -192,12 +198,12 @@ driver, but only against the If a removable device is attached to the .Nm driver, then the act of changing the media will invalidate the -disklabel and information held within the kernel. To avoid -corruption, all accesses to the device will be discarded until there -are no more open file descriptors referencing the device. During this -period, all new open attempts will be rejected. When no more open -file descriptors reference the device, the first next open will load a -new set of parameters (including disklabel) for the drive. +disklabel and information held within the kernel. +To avoid corruption, all accesses to the device will be discarded until there +are no more open file descriptors referencing the device. +During this period, all new open attempts will be rejected. +When no more open file descriptors reference the device, the first next +open will load a new set of parameters (including disklabel) for the drive. .Sh FILES .Bl -tag -width /dev/rsdXXXXX -compact .It Pa /dev/sd Ns Ar u Ns Ar p |