1.\" $OpenBSD: rdsetroot.8,v 1.4 2023/04/24 14:06:01 krw Exp $ 2.\" 3.\" Copyright (c) 2019 Theo de Raadt 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: April 24 2023 $ 18.Dt RDSETROOT 8 19.Os 20.Sh NAME 21.Nm rdsetroot 22.Nd insert disk image into RAMDISK kernel 23.Sh SYNOPSIS 24.Nm rdsetroot 25.Fl s 26.Ar kernel 27.Nm rdsetroot 28.Op Fl dx 29.Ar kernel 30.Op Ar disk.fs 31.Sh DESCRIPTION 32The 33.Nm 34utility inserts the file 35.Ar disk.fs 36into the reserved space inside a RAMDISK kernel. 37If 38.Ar disk.fs 39is not specified, 40.Nm 41reads from standard input. 42.Pp 43The options are as follows: 44.Bl -tag -width Ds 45.It Fl d 46Debug. 47.It Fl s 48Print the size in bytes of the reserved space in the RAMDISK kernel. 49No insertion or extraction is attempted. 50.It Fl x 51Rather than inserting, extract the 52.Ar disk.fs 53image. 54If 55.Ar disk.fs 56is not specified, 57.Nm 58writes to standard output. 59The disk can be made accessible using 60.Xr vnconfig 8 , 61filesystems can be manipulated, and finally re-inserted into the RAMDISK kernel. 62.El 63.Sh SEE ALSO 64.Xr config 8 , 65.Xr disklabel 8 , 66.Xr vnconfig 8 67