SMFD(7M)                                                              SMFD(7M)


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

SYNOPSIS
     /dev/rdsk/fds*

DESCRIPTION
     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
     /usr/include/sys/smfd.h).

     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#:

                  /dev/{r}dsk/fds<controller-#>d<drive-#>{.type}


     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
     /dev/{r}dsk/fds?d?.48
     /dev/{r}dsk/fds?d?.96
     /dev/{r}dsk/fds?d?.96hi


     /dev/{r}dsk/fds?d?.3.5
     /dev/{r}dsk/fds?d?.3.5hi
     /dev/{r}dsk/fds?d?.3.5.20m

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


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