Answer:
seek time = 4ms/track
search time= 1.7ms/sector
T/S Seek time Search time Total
3,0 start
2,5 1*4=4 5*1.7= 8.5 4+8.5+0.5
= 13
1,2 1*4=4 2*1.7=3.4 4+ 3.4+0.5 =7.9
1,0 0 0 0+0+0.5=0.5
2,3 1*4=4 3*1.7= 5.1 4+ 5.1+0.5=9.6
2,4 0 4*1.7= 6.8 0+6.8+0.5=7.3
1,0 1*4=4 0 4+0+0.5=4.5
Total time= 13+7.9+0.5+ 9.6+7.3+4.5=42.8 ms
Remember Data transfer is 0.5 for all.
Explanation:
The mean time it takes from one track to another is seek time. hence = track difference * seek time per track
And similarly search time = no. of sectors * search time per sector
And this we have used to calculate above.
