Commands in Level 1

Commands executed in Level 1 works on Cache, which are in charge of cache control. They are helpful for diagnosis. This article will introduce some common commands.

Command B is to display cache content with the format of Bx,y, in which x is the address of cache need to be displayed while y is the compared cache address. If x is read cache, then y is not necessary to input and the system will automatically compare the content of x with the one of write cache. Further more, the different data will be in “( )”.

Command D is to display memory content with the format of Dx,y,z. In the format, x is the first four of eight hex numbers while y is the last four.

The command N works on SMART system with the format Nx,y,z, in which y and z are only used when x=3;

—x=0, toggle of SMART;

—x=1, to reset SMART, which is always used in the typical malfunction of 7200.11;

—x=2, to upgrade value of SMART attribute;

—x=3, to set SMART attribute value .Here parameters y and z are used, in which y is the attribute and z is the modified value.

—x=4, to reset SMART, same with N1;

—x=5, to display SMART attribute;

—x=6, to display threshold of SMART attribute value;

—x=7, to display log of remapped sectors;

Command U is intended to edit cache bytes with the format of Ux,y,z, in which x is the first four of eight hex numbers,y is the last four and z is the modified data.

Command c is to compare cache contents with the format of cx,y,z, in which x is source cache with read cache as default, y is compared cache with write cache as default and z is cache blocks compared with default value 1.