In a message dated 7/9/2007 1:37:06 P.M. Central Daylight Time, [EMAIL PROTECTED] writes: >Are we creating new terminology? I assume a MOD15 is 15 GB? Close. Mod 1 (aka 3390-1) has 1113 cylinders. Mod 3 has 3x1113=3339 cylinders. Mod nn has nnx1113 cylinders. Therefore mod 15 has 15x1113=16695 cylinders = 250425 tracks = ca. 14 190 082 200 bytes = . Mod 54 = 60102 cylinders = serious pressure to remove the two-byte-long cylinder number constraint. Theoretically there could be a mod 58.8 before reaching the 65535 cylinder limit. Today's huge value is tomorrow's severe constraint. Bill Fairchild Plainfield, IL
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