.SH NAME
rdev \- query/set image root device, RAM disk size, or video mode
.SH SYNOPSIS
-.nf
-.BR "rdev [ \-Rrvh ] [ \-o " offset " ] [ " image " [ " value " [ " offset " ] ] ]"
-.BR "rdev [ \-o " offset " ] [ " image " [ " root_device " [ " offset " ] ] ]"
-.BR "ramsize [ \-o " offset " ] [ " image " [ " size " [ " offset " ] ] ]"
-.BR "vidmode [ \-o " offset " ] [ " image " [ " mode " [ " offset " ] ] ]"
-.BR "rootflags [ \-o " offset " ] [ " image " [ " flags " [ " offset " ] ] ]"
-.fi
+.B rdev
+.RB [ \-Rrvh ]
+.RB [ \-o
+.IR offset ]
+.RI [ image
+.RI [ value
+.RI [ offset ]]]
+.br
+.B rdev
+.RB [ \-o
+.IR offset ]
+.RI [ image
+.RI [ root_device
+.RI [ offset ]]]
+.br
+.B ramsize
+.RB [ \-o
+.IR offset ]
+.RI [ image
+.RI [ size
+.RI [ offset ]]]
+.br
+.B vidmode
+.RB [ \-o
+.IR offset ]
+.RI [ image
+.RI [ mode
+.RI [ offset ]]]
+.br
+.B rootflags
+.RB [ \-o
+.IR offset ]
+.RI [ image
+.RI [ flags
+.RI [ offset ]]]
.SH DESCRIPTION
With no arguments,
.B rdev
For the
.B ramsize
command, the
-.B size
+.I size
parameter specifies the size of the RAM disk in kilobytes. 2.0.x kernels
and newer dynamically allocate the ramdisk and do not need this setting.
For the
.B rootflags
command, the
-.B flags
+.I flags
parameter contains extra information used when mounting root.
Currently the only effect of these flags is to force the kernel to
mount the root filesystem in readonly mode if
-.B flags
+.I flags
is non-zero.
For the
.B vidmode
command, the
-.B mode
+.I mode
parameter specifies the video mode:
.nf