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Annotation of coherent/a/usr/man/COHERENT/floppy, revision 1.1.1.1

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                      3: floppy disks          Technical Information          floppy disks
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                      8: To use a floppy disk with COHERENT, you must:
                      9: (1) format it with /etc/fdformat,
                     10: (2) build an empty filesystem on it with /etc/mkfs,
                     11: (3) mount it with /bin/mount or /etc/mount,
                     12: (4) copy files to or from it, e.g. with cp or cpdir, and
                     13: (5) unmount it with /bin/umount or /etc/umount.
                     14: 
                     15: Some commonly used diskette device names and formats are:
                     16: 
                     17: 
                     18: Device name  Sectors/track  Heads  Sectors  Bytes   Format
                     19: /dev/f9a0          9          2      720    360 KB   5.25"
                     20: /dev/fqa0          9          2     1440    720 KB   3.5"
                     21: /dev/fha0         15          2     2400    1.2 MB   5.25"
                     22: /dev/fva0         18          2     2880    1.44 MB  3.5"
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                     25: Device names ending in '0' indicate drive A:, names ending in '1'
                     26: indicate drive B:.
                     27: 
                     28: For example, to copy directory  /dir to a 5.25" high density dis-
                     29: kette in drive 0 (A:):
                     30: 
                     31: 
                     32:      /etc/fdformat -a /dev/fha0
                     33:      /etc/badscan -v -o proto /dev/fha0 2400
                     34:      /etc/mkfs /dev/fha0 proto
                     35:      rm proto
                     36:      /etc/mount /dev/fha0 /f0
                     37:      cpdir -vd /dir /f0/dir
                     38:      /etc/umount /dev/fha0
                     39: 
                     40: 
                     41: /bin/mount and /bin/umount  provide handy abbreviations for mount
                     42: and umount commands.  For example,
                     43: 
                     44: 
                     45:      mount f0
                     46:      cpdir -vd /dir /f0/dir
                     47:      umount f0
                     48: 
                     49: 
                     50: is a  more convenient way  to perform the last  three commands in
                     51: the above example.
                     52: 
                     53: ***** See Also *****
                     54: 
                     55: fd, fdformat, technical information
                     56: 
                     57: ***** Notes *****
                     58: 
                     59: Because COHERENT does not write  cached disk data to the disk un-
                     60: til a  sync occurs  or the disk  device is unmounted,  removing a
                     61: disk from the disk drive without unmounting it can produce incor-
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                     63: 
                     64: COHERENT Lexicon                                           Page 1
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                     68: 
                     69: floppy disks          Technical Information          floppy disks
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                     73: rect data or an invalid filesystem on the disk.  Another disk in-
                     74: serted into the drive after a disk has removed without unmounting
                     75: may be clobbered by data  intended for the first disk.  Always be
                     76: sure to unmount disks before removing them from the disk drive.
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                    130: COHERENT Lexicon                                           Page 2
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