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MD(4) Device Drivers 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 8.0 November 30, 2013 NetBSD 8.0