Extended Boot Sector

Offset

Size

Description

Comments

0 (0x00)

2^BytesPerSectorShift - 4

ExtendedBootCode

 

2^BytesPerSectorShift - 4

4

ExtendedBootSignature

0xAA550000

Whole sector is used for boot code except last 4 bytes used for signature in each sector. If Extended Boot Sector is not used, it should be filled with 0x00. Extended signature must be preserved.

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