DRTEST(8)                                                            DRTEST(8)



NAME
       drtest - standalone disk test program

DESCRIPTION
       _D_r_t_e_s_t  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 _d_r_t_e_s_t.  No hard errors should be found, but in  many  cases
       quite a few soft ECC errors will be reported.

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

EXAMPLE
       A sample run of _d_r_t_e_s_t is shown below.  In this example (using a  750),
       _d_r_t_e_s_t  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.
            _(_c_h_u_n_k _s_i_z_e _i_s _t_h_e _n_u_m_b_e_r _o_f _b_y_t_e_s _r_e_a_d _p_e_r _d_i_s_k _a_c_c_e_s_s_)
            Start ...Make sure hp(0,0) is online
             ...
            _(_e_r_r_o_r_s _a_r_e _r_e_p_o_r_t_e_d _a_s _t_h_e_y _o_c_c_u_r_)
             ...
            _(_._._._p_r_o_g_r_a_m _r_e_s_t_a_r_t_s _t_o _a_l_l_o_w _c_h_e_c_k_i_n_g _o_t_h_e_r _d_i_s_k_s_)
            _(_._._._t_o _a_b_o_r_t _h_a_l_t _m_a_c_h_i_n_e _w_i_t_h _^_P_)


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

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

AUTHOR
       Helge Skrivervik



4.2 Berkeley Distribution        May 19, 1986                        DRTEST(8)