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E.2.23.  /proc/partitions

This file contains partition block allocation information. A sampling of this file from a basic system looks similar to the following:
major minor  #blocks  name
  3     0   19531250 hda
  3     1     104391 hda1
  3     2   19422585 hda2
253     0   22708224 dm-0
253     1     524288 dm-1
Most of the information here is of little importance to the user, except for the following columns: