.TH DRUM 4 .SH NAME drum \- paging device .SH SYNOPSIS This file refers to the paging device in use by the system. This may actually be a subdevice of one of the disk drivers, but in a system with paging spread across multiple disk drives or interleaved will be an indirect driver. .SH FILES /dev/drum .SH BUGS Reads from the drum are not allowed across the interleaving boundaries. Since these only occur every .BR . 5Mbytes or so, and since the system never allocates blocks across the boundary, this is usually not a problem.