Comment 315 for bug 59695

Interesting,
More details about my machines:

Gateway 7330GZ about 18 months old, Pentium 4, 3.06 G Hz, Fujitsu PATA HD 80 GB, with over 66,000 load cycles, came with Windows XP, using PC Linux for the last 4 months only.
Tested yesterday with PC Linux and before I apply “-B 255” was ~ 60 load cycles per hour.
After: 0 load cycles per hour.

DELL VOSTRO 1400 about 10 days old, Intel® Core™ 2 Duo T7500 2.2GHz, Toshiba SATA HD 160 GB, 4,500 load cycles, came with Windows Vista, using Ubuntu for less than a day.
Tested yesterday with Ubuntu and Windows XP, Sp 2: ~ 60 load cycles per hour.
Obviously there is difference in PATA and SATA behavior or have something to do with the computer BIOS and the HD firmware it self...

Will test both with: Ubintu, PC Linux and Windows.
Did someone test what is going on with no OS?