Technical data

SunOS 5.5 Devices xy(7D)
NOTES In raw I/O read(2) and write(2) truncate file offsets to 512-byte block boundaries, and
write(2) scribbles on the tail of incomplete blocks. Thus, in programs that are likely to
access raw devices, read(2), write(2), and lseek(2) should always deal in 512-byte multi-
ples.
modified 20 Jul 1994 7D-411