All Western Digital hard drives have special
"hidden" sectors (sometimes called WDC Files), which contains very
interesting information about hard
drive and it's firmware. These sectors can be read using UNDOCUMENTED,
WDC-specific functions. IDE Diag can save this information to files and
anyone can try to find some useful information about it's HDD.
Please note that this function is DISABLED in standard downloadable
version. If you want a special version with WDC-Files support enabled, contact
the author please.