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SMFD(7M)							      SMFD(7M)

NAME    [Toc]    [Back]

     smfd, floppy, floptical - driver for SCSI floppy and floptical disk

SYNOPSIS    [Toc]    [Back]


DESCRIPTION    [Toc]    [Back]

     This driver supports 5 1/4" floppy	drives in 3 standard formats when used
     with the freestanding SCSI	floppy drive.  The standard single and double
     density dual sided	3 1/2" drive and the 3 1/2" 20.1MB floptical drive is
     also supported.

     The driver	also supports a	large range of special formats by use of the
     SMFDSETMODE ioctl (defined	along with the associated structure in

     Most of the ioctls	for the	dksc also apply	to this	driver,	with the
     exception of the bad block	handling.  The volume header ioctl DIOCGETVH
     is	supported by creating the structure based on the current driver
     parameters.  The DIOCGETVH	ioctl is not supported.	 Individual tracks may
     be	formatted using	the DIOCFMTTRK ioctl and the fmt_map_info structure
     defined in	/usr/include/sys/dvh.h.	The SMFDMEDIA ioctl is used to get the
     status of the floppy and the SMFDEJECT ioctl is used to eject the floppy
     on	a drive	with the software eject	mechanism.

     The standard devices (and suffixes) are the standard PC formats of	360KB
     (.48), 720KB (.96), 1.2 MB	(.96hi)	on the regular 5 1/4" device, and the
     standard 720 KB (.3.5), and 1.44MB	(.3.5hi).  The .3.5.20m	suffix is for
     the 20.1MB	3 1/2" floptical drives	and disks only.

     The special files are named according to the convention discussed in
     intro(7M),	with the exception of .type, instead of	s#:


     These devices can be used as filesystems, as backup devices, and for data
     interchange with other systems.

     Ordinarily, the devices may be opened by more than	one process at a time,
     as	long as	all are	opened at the same density.  Attempts to open at a
     different density than which it is	already	open will fail.

     To	manually access	a disk,	use mount(1m).	mediad(1m) can also be
     configured	to automatically mount a disk.	New disks must be formatted;
     see mkfp(1m).

FILES    [Toc]    [Back]


									Page 1

SMFD(7M)							      SMFD(7M)


ERROR RETURNS    [Toc]    [Back]

     The following errors are returned by this driver; other errors can	also
     be	returned by higher levels of the operating system.

     EAGAIN    The drive returned an error indicating it was not ready (media
	       ejected,	and so on).

     EIO       Some physical I/O error has occurred.

     ENXIO     Device number doesn't correspond	to a valid device.

NOTE    [Toc]    [Back]

     In	previous releases, the flag O_EXCL had special meaning to this driver
     when used on open;	it is now ignored.  For	true exclusive use access, the
     ds(7m) driver should be used, with	the O_EXCL flag	passed on open,	where
     it	will either complete the open with no other opens allowed, or will
     fail if the device	is already open	by any driver.

     An	open will now succeed if there is no media in the floppy drive.

SEE ALSO    [Toc]    [Back]

     fx(1M), mkfp(1m), fpck(1m), mediad(1m), mount(1m),	open(2), intro(7),
     dksc(7M), ds(7m)

									PPPPaaaaggggeeee 2222
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