Hard drives greater than 2 TB do not work on existing operating systems

2TB hard drive External USB, eSATA, Firewire, and internal hard drives over 2 TB’s cannot be formatted on Windows 32-bit operating systems using the Master Boot Record (MBR) partitioning scheme. As a result, when you connect drives over 2 TB’s, depending on which interface you are using to connect them to the computer, they may not be recognized at all, they may be only partially recognized, or they may be recognized but you can’t access them. Other issues such as the system locking up or the computer not being able to boot may also occur.

Cause:
This not an external or internal hard drive issue. It is a 2 TB volume limitation caused by the Master Boot Record (MBR) partitioning…

Fix MBR in Windows XP and Vista By Yourself

What is the MBR?

fix mbr A master boot record (MBR), or partition sector, is the 512-byte boot sector that is the first sector ("LBA Sector 0") of a partitioned data storage device such as a hard disk. (The boot sector of a non-partitioned device is a Volume Boot Record. These are usually different, although it is possible to create a record that acts as both; it is called a multi boot record.) The MBR may be used for one or more of the following:

  • Holding a disk’s primary partition table
  • Bootstrapping operating systems, after the computer’s BIOS passes execution to machine code instructions contained within the MBR
  • Uniquely identifying individual disk media, with a 32-bit