nothing
Some common utilities for partitioning hard drives include Disk Management (Windows), Disk Utility (Mac), and GParted (Linux). These utilities allow you to create, resize, delete, and format partitions on your hard drive.
Partition Magic =]
All hard drives require partitioning. Most have one big partition, and come that way from the store.
Partitioning Table
Partitioning Table.
Check disc and defrag
Norton Utilities PartitionMagic SpinRite
Without knowing what Operating System you are using then websites like versiontracker.com have been able to provide a variety of programs that support hard drives
Use Disk Utility to format or partition hard drives. You should back up the drive before formatting or partitioning.
separate data files and operating system allow the computer to be dual booted
Normally, one would say 31, but the true answer depends upon the partitioning limitations of the drive.
This question is too vague to answer fully. The number of internal hard drives is limited by the motherboard. The number of external drives is limited by USB or SATA type connection ports. Windows 7 has some limits involving what it can see over 2TB on a single drive based on partitioning methods. I am not aware of any limit of hard drives under Windows 7 specifically.