Boot Sector Explorer
This program is FREEWARE.

DiamondCS Boot Sector Explorer allows you to quickly and easily read and write to both the boot sectors of your logical drives such as PhysicalDrive0 and the Master Boot Records (MBRs) of physical drives such as C:, D: etc. It can even examine drives that aren't hard drives, including CD-ROMs, DVDs, USB sticks and more.
Some trojans, worms, viruses, rootkits and various other types of malware have been known to modify these sectors, but Boot Sector Explorer can be used to keep sector backups, and then be used to write the backups back in the event of an infection.
Screenshot:

Caution: Writing an invalid sector may prevent your operating system from loading. Use the Write feature at your own risk.
For more information we recommend Wikipedia's Boot Sector and Master Boot Record articles.
MD5: 4990FB02DAFCF8552F62BE8D6351F200
Supported Operating Systems:| Client | Windows 95, Windows 98, Windows ME, Windows NT, Windows 2000, Windows XP, Windows Vista |
| Server | Windows NT Server, Windows 2000 Server, Windows Server 2003 |

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