Viao cr42z_r did not recognize external hard disk

[Akhtar]

Hello,I bought wd caviar black 500gb and used as external hard drive.
Sony viao cr42z_r did not recognize external hard disk. Only massege (new hardware found) no icon display .

 

[WyomingKnott]

At a guess, since the new hardware was found, the drive needs to be partitioned and formatted. Please see Step Five here: http://www.tomshardware.com/forum/265764-32-guide-installed-disk-system

BTW, how are you using it an an external? USB enclosure? eSata dock?