The servo signals are written using special equipment (a precise head/servo mechanism, not the regular HDD heads). You can see them in this magnetic image - the whole 25% to 75% of the image is the servo signal area.…
The servo signals are written using special equipment (a precise head/servo mechanism, not the regular HDD heads). You can see them in this magnetic image - the whole 25% to 75% of the image is the servo signal area.…