drtest - standalone disk test program
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 con-
texts 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
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.
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)
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.
4.2 Berkeley Distribution May 19, 1986 DRTEST(8)