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This article mainly introduces what Blocks in linux mean, with certain reference value, interested friends can refer to, I hope you have a lot of gains after reading this article, let Xiaobian take you to understand.

What do Blocks mean in Linux? What are Blocks?

Disk /dev/hda: 80.0 GB, 80026361856 bytes

255 heads, 63 sectors/track, 9729 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

This hard disk is 80 gigabytes, with 255 magnetic surfaces;63 sectors;9729 magnetic cylinders; the capacity of each cylinder is 8225280 bytes=8225.280 K (about)= 8.225280 M (about);

Block capacity: This is my translation, in fact, inaccurate, the meaning of the expression is indeed the meaning of capacity, its unit is K; the value of a partition capacity is derived from the following formula; Blocks =(End value of corresponding partition-Start value of corresponding partition) x capacity of unit cylinder

So let's calculate the size of hda1's Blocks:

hda1 Blocks=（765-1）x8225.280=6284113.92 K = 6284.113.92M

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