Updating laser in xbox disk drive
Typically, some of an HDD's capacity is unavailable to the user because it is used by the file system and the computer operating system, and possibly inbuilt redundancy for error correction and recovery.
Performance is specified by the time required to move the heads to a track or cylinder (average access time) plus the time it takes for the desired sector to move under the head (average latency, which is a function of the physical rotational speed in revolutions per minute), and finally the speed at which the data is transmitted (data rate).
IBM 2305 in 1970) so that no time was lost physically moving the heads to a track.
If you've already flashed your XBox 360's disc drive, then congratulations, you've accomplished the most challenging step involved in hacking you XBox. As Microsoft keeps updating it's firmware to try and fend off hackers, you must keep updating your custom firmware to thwart their efforts.
This video will show you how to upgrade your flashed Ben Q XBox 360 disc drive's firmware to IXtreme 1.61 using Jungle Flasher 1.61.
Instead, the heads were allowed to "land" on a special area of the disk surface upon spin-down, "taking off" again when the disk was later powered on.
This greatly reduced the cost of the head actuator mechanism, but precluded removing just the disks from the drive as was done with the disk packs of the day.
Like the first removable pack drive, the first "Winchester" drives used platters 14 inches (360 mm) in diameter.