Recently, I bought a pair of those new Western Digital Caviar Green drives. These new drives represent a transitional point from 512-byte sectors to 4096-byte sectors. A number of articles have been published recently about this, explaining the benefits and some of the challenges that we’ll be facing during this transition. Reportedly, Linux should unaffected by some of the pitfalls of this transition, but my own experimentation has shown that Linux is just as vulnerable to the potential performance impact as Windows XP.
Insert your USB pen drive. Let it get detected and mounted. Open Terminal. Type The Following commands dmesg |tail -> here the ‘|’ key is the pipe, ie, the key before the backspace key(the upper one, so press shift) You’ll get something like sathya@shaman:~$ dmesg |tail [ 9921.681164] sda: Write Protect is off [ 9921.681174] sda: Mode Sense: 23 00 00 00 [ 9921.681178] sda: assuming drive cache: write through