OS Disk Space Management

As you know that, generally are stored on the disks, therefore disk space management is a big concern to the designers of the file system.

There are the following two general strategies are possible for storing an n byte file:

  • n consecutive bytes of disk space are allocated
  • file is split up into a number of contiguous blocks

The same trade-off is present in the memory management systems between pure segmentation and paging.

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