This manpage has been automatically generated from fdutils's texinfo
documentation. However, this process is only approximative, and some
items, such as cross-references, footnotes and indices are lost in this
translation process. Indeed, these items have no appropriate represen-
tation in the manpage format. Moreover, only the items specific to
each command have been translated, and the general information about
fdutils has been dropped in the manpage version. Thus I strongly
advise you to use the original texinfo doc.
* To generate a printable copy from the texinfo doc, run the fol-
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* To generate a HTML copy, run:
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A pre-made HTML can be found at:
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The texinfo doc looks most pretty when printed or as HTML. Indeed, in
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quoting conventions used in info.
floppymeter [-f] [-w warmup-delay] [-W window]
[-c cycles] [-h] drive
The floppymeter program measures characteristic parameters of a floppy
drive and floppy controller, such as the rotation speed of the drive,
the data transfer rate of the controller, and the resulting raw capac-
ity of a disk track. To use this program, insert a disposable floppy
in the drive, and type floppymeter --density, where density describes
the density of the disk used for the test. (Should be one of dd, hd or
ed). CAUTION: the data on the disk will be erased. This program should
be used to verify whether the drive and controller are out of tolerance
if you experience problems with some high capacity formats. It only
needs to be run once per drive: although a disk is needed to perform
the measurements, the measured data only depend on the drive and the
controller, and not on the disk.
To measure the raw capacity of the disk track, the floppymeter program
formats the first track of the drive in a special way that allows it to
read the raw data (gaps and headers) of the disk. Thus, all data previ-
ously stored on that disk is lost.
The rotation speed is measured by timing the return time of a readid
the drive definition file (See section Drive descriptions.).
Usually, the data transfer rate should not deviate more than 150 ppm
from the expected value, and the rotation speed of the drive should not
deviate more than 3000 ppm from the expected value. If these devia-
tions are bigger, you may get problems with certain high capacity for-
If the raw capacity of the drive is too small, some high capacity for-
mats may become unformattable on this drive/controller combo.
If on the other hand, the raw capacity of the drive is too big, you may
get problems when writing to a disk formatted by this drive on another
drive with a smaller raw capacity. In order to avoid this, increase
superformats gap parameter (-G).
-h Prints a short help
--dd Tells the program that we use a Double Density disk.
--hd Tells the program that we use a High Density disk.
--ed Tells the program that we use an Extra Density disk.
-f Runs the measurement non interactively. With this option, the
program doesn't ask for confirmation, and doesn't display the
continuously updated values during the rotation speed measure-
This value describes how many rotations are used for the compu-
tation of the sliding average. Default is 30.
Describes the number of rotations clocked during the rotations
speed determination test. Default is 1000.
This program is quite new, and may have bugs. Here are a few suggested
tests to check its sanity:
* The deviation of the data transfer rate solely depends on the
controller. It should not be different between two drives con-
nected to the same controller. However, the drive rotation speed
may be different for different drives.
* All data transfer rates (for double, high and extra density) are
derived from a same master frequency. Thus the deviation of the
data transfer rate should be independent of the density used.
Fdutils' texinfo doc
fdutils-5.5 03Mar05 floppymeter(1)
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