.po 1i
.TH SYNC 2 Bell
.V 08/15/84 17:15:43
.\"@[$]sync.2	1.5	08/15/84 17:15:43 - Zilog Inc.
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.SH NAME
sync \- update super-block
.SH SYNOPSIS
.B sync( )
.SH DESCRIPTION
.B Sync
causes all information in core
memory that should be on disk to be written out.
This includes modified super blocks,
modified i-nodes, and delayed block I/O.
.PP
It is used by programs which examine a file system,
for example
.BR icheck (M)
.BR df (M)
etc.
It is mandatory before a boot.
.SH SEE ALSO
sync(M), update(M).
.SH LIMITATIONS
The writing, although scheduled, is not necessarily
complete upon return from 
.BR sync .
.SH ASSEMBLER
.na
.nf
	CONSTANT SYNC	:= 36

	sc	#SYNC
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