GPT MBR Flag Starting CHS Partition Type Ending CHS Starting LBA Size 00 000302 06 E17FFE 00000080 00763780 *Data is in an IA32-based system, Little endian (least signiﬁcant byte is ﬁrst) GPT vs MBR MBR = 32bit, GPT = 64bit GPT has a backup Partition Table located at Last LBA n-1 and a backup GPT Header located at Last LBA n MBR has a maximum of 4 partitions GPT has a maximum of 128 partitions MBR Partition Table allows for up to 2.2 TB (2.20 × 10 12 bytes) GPT allows for up to 9.4 ZB (9.4 × 10 21 bytes) GPT allows for each partition to have a 36 character Unicode name The odds of generated two identical guids is 1 in 5,316,911,983,139,663,491,615,228,241,121,400,000 GUIDs are stored as 128-bit values, and are displayed as 32 hexadecimal digits GUID Partition Table Globally Unique Identifier Master Boot Record GPT header (LBA 1) Protective MBR (LBA 0) Marley Jaffe marleyjaffe.com Partition table (LBA 2)

GPT header (LBA 1) Protective MBR (LBA 0) Marley - Jon Rajewski

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Page 1: GPT header (LBA 1) Protective MBR (LBA 0) Marley - Jon Rajewski

GPT

MBR

Flag Starting CHS Partition Type Ending CHS Starting LBA Size00 000302 06 E17FFE 00000080 00763780*Data is in an IA32-based system, Little endian (least signi�cant byte is �rst)

GPT vs MBR

MBR = 32bit, GPT = 64bitGPT has a backup Partition Table located at Last LBA n-1 and a backup GPT Header located at Last LBA nMBR has a maximum of 4 partitionsGPT has a maximum of 128 partitionsMBR Partition Table allows for up to 2.2 TB (2.20 × 1012 bytes)GPT allows for up to 9.4 ZB (9.4 × 1021 bytes)GPT allows for each partition to have a 36 character Unicode nameThe odds of generated two identical guids is 1 in 5,316,911,983,139,663,491,615,228,241,121,400,000GUIDs are stored as 128-bit values, and are displayed as 32 hexadecimal digits

GUID Partition TableGlobally Unique Identifier

Master Boot Record

GPT header (LBA 1)

Protective MBR (LBA 0)

Marley Jaffemarleyjaffe.com

Partition table (LBA 2)