1.\" $NetBSD: md.4,v 1.5 2007/02/25 04:22:01 uwe Exp $ 2.\" 3.\" This file is in the public domain. 4.\" 5.Dd February 25, 2007 6.Dt MD 4 7.Os 8.Sh NAME 9.Nm md 10.Nd memory disk driver 11.Sh SYNOPSIS 12.Cd "pseudo-device md" Op Ar count 13.Sh DESCRIPTION 14The 15.Nm 16driver enables use of system or user memory as a disk. 17Memory for the disk must be allocated within the kernel or with 18.Xr mdconfig 8 19before the 20.Nm 21device may be used as a disk. 22Its behaviour is configured by the kernel options 23.Sy MEMORY_DISK_HOOKS , 24.Sy MEMORY_DISK_IS_ROOT , 25.Sy MEMORY_DISK_ROOT_SIZE , 26.Sy MEMORY_DISK_DYNAMIC , 27and 28.Sy MEMORY_DISK_SERVER . 29.Sh FILES 30.Bl -tag -width /dev/rmdXX -compact 31.It Pa "/dev/md??" 32block mode memory disk devices. 33.It Pa "/dev/rmd??" 34raw mode memory disk devices. 35.El 36.Sh SEE ALSO 37.Xr options 4 , 38.Xr mdconfig 8 , 39.Xr mdsetimage 8 40