As shown in FIG 1, an optical disk 11 is rotated by a motor 12, and duringthis rotation, data is written to the optical disk 11 through an optical head 13, or {HEAD ~ data} recorded on {TAIL ~ the optical disk} 11 is read through the optical head 13 
recorded on
As shown in FIG 1 , an optical disk 11 is rotated by a motor 12 , and duringthis rotation , data is written to the optical disk 11 through an optical head 13 , or { HEAD ~ data } recorded on { TAIL ~ the optical disk } 11 is read through the optical head 13
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