md(4) - NetBSD Manual Pages

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MD(4)                   NetBSD Kernel Interfaces Manual                  MD(4)


NAME

     md -- memory disk driver


SYNOPSIS

     pseudo-device md


DESCRIPTION

     The md driver enables use of system or user memory as a disk.  Memory for
     the disk must be allocated within the kernel or with mdconfig(8) before
     the md device may be used as a disk.  Its behaviour is configured by the
     kernel options MEMORY_DISK_HOOKS, MEMORY_DISK_IS_ROOT,
     MEMORY_DISK_ROOT_SIZE, MEMORY_DISK_DYNAMIC, and MEMORY_DISK_SERVER.


FILES

     /dev/md??   block mode memory disk devices.
     /dev/rmd??  raw mode memory disk devices.


SEE ALSO

     options(4), mdconfig(8), mdsetimage(8)

NetBSD 9.1                     November 30, 2013                    NetBSD 9.1