Il faut réduire le courant d'écriture à partir de la piste 43
http://bitsavers.trailing-edge.com/pdf/ ... A-751A.pdf
Il existe un adaptateur qui gère ce problème : http://dbit.com/fdadap.html
3.2.8 Write Current Switch (LOW CURRENT)
This signal is used as the current switch signal only in writing.
The signal level is "High" when writing on TRK00 to 43, and "Low" when writing on TRK44 to 76.
Post Compensation in reading is automatically performed within the drive.