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Plan 9 - man page for wren (plan9 section 3)

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WREN(3) 										  WREN(3)

       wren, ata - hard disk interface

       bind #H[drive] /dev
       bind #w[target[.lun]] /dev


       The  hard disk interfaces (wren, #w, is a SCSI disk; ata, #H, is an IDE or ATA disk) serve
       a one-level directory giving access to the hard disk partitions.  The parameter to  attach
       defines	the  numerical	SCSI  target  and  logical unit number or the IDE drive number to
       access.	Both default to zero.

       Each partition name is prefixed by hd and the numeric  drive  identifier.   The	partition
       always  exists  and  covers  the  entire  disk.	The size of each partition as reported by
       stat(2) is the number of bytes in the partition, so the size of is the size of the  entire

       The  partition  also  always  exists; it is the last block on the disk for SCSI, second to
       last for IDE.  If it contains valid partition data, those partitions will  be  visible  as
       well.   Every  time the device is bound, the partitions are updated to reflect any changes
       in the partition file.

       The format of the partition file is the string

	      plan9 partitions

       on a line, followed by partition specifications, one per line, consisting of  a	name  and
       textual strings for the block start and limit for each partition on the disk.

       The program prep(8) writes the partition table for the disk; its use is preferred to writ-
       ing it by hand.

       prep(8), scsi(3)


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