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ALTMEM(4) Device Drivers Manual ALTMEM(4) NAME altmem - Alternative memory disk driver SYNOPSIS altmem* at altmemdev? DESCRIPTION The altmem driver enables use of physical memory that is normally inaccessible by the machine-dependent pmap(9) as a swap device. When an alternative memory disk device is present, this device is generally preferred to hard disk-based swap space. See the swapctl(8) and fstab(5) man pages for instructions on how to assign priorities to swap devices. FILES /dev/altmem?? block mode alternative memory disk devices. /dev/raltmem?? raw mode alternative memory disk devices. SEE ALSO md(4), fstab(5), swapctl(8) HISTORY The altmem device driver appeared in NetBSD 6.0. AUTHORS Jared D. McNeill <jmcneill@NetBSD.org> NetBSD 8.0 March 11, 2009 NetBSD 8.0