# 2.11BSD#431 - /usr/man/cat8/drtest.0

    DRTEST(8)	    UNIX Programmer's Manual		DRTEST(8)

    NAME
         drtest - standalone disk test program

    DESCRIPTION
         Drtest is a standalone program used to read a disk track by
         track. It was primarily intended as a test program for new
         standalone drivers, but has shown useful in other contexts
         as well, such as verifying disks and running speed tests.
         For example, when a disk has been formatted (by format(8)),
         you can check that hard errors has been taken care of by
         running drtest.  No hard errors should be found, but in many
         cases quite a few soft ECC errors will be reported.

         While drtest is running, the cylinder number is printed on
         the console for every 10th cylinder read.

    EXAMPLE
         A sample run of drtest is shown below. In this example
         (using a 750), drtest is loaded from the root file system;
         usually it will be loaded from the machine's console storage
         device.  Boldface means user input.  As usual, ``#'' and
         ``@'' may be used to edit input.

    	  >>>B/3
    	  %%
    	  loading hk(0,0)boot
    	  Boot
    	  : hk(0,0)drtest
    	  Test program for stand-alone up and hp driver

    	  Debugging level (1=bse, 2=ecc, 3=bse+ecc)?
    	  Enter disk name [type(adapter,unit), e.g. hp(1,3)]? hp(0,0)
    	  Device data: #cylinders=1024, #tracks=16, #sectors=32
    	  Testing hp(0,0), chunk size is 16384 bytes.
    	  (chunk size is the number of bytes read per disk access)
    	  Start ...Make sure hp(0,0) is online
    	   ...
    	  (errors are reported as they occur)
    	   ...
    	  (...program restarts to allow checking other disks)
    	  (...to abort halt machine with ^P)

    DIAGNOSTICS
         The diagnostics are intended to be self explanatory. Note,
         however, that the device number in the diagnostic messages
         is identified as  typeX instead of type(a,u) where X =
         a*8+u, e.g., hp(1,3) becomes hp11.

    SEE ALSO
         format(8V), bad144(8)

    Printed 11/26/99	  May 19, 1986				1

    DRTEST(8)	    UNIX Programmer's Manual		DRTEST(8)

    AUTHOR
         Helge Skrivervik

    Printed 11/26/99	  May 19, 1986				2

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