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Partitions – Number and Type

MBR Partitioning

4 Primary Partitions

Only a Primary can Boot an OS

1 Active Partition
Up to 128 Logical Partitions

Having logical partitions uses 1 Primary Partition
Logical Partitions are NOT bootable

GPT Partitioning

Requires UEFI
128 Partitions

All Bootable

1 Active Partition

UEFI Controlled

No Logical Partitions

MBR

GPT

2 Terabyte Partition Size Limit

1 Zettabyte Partition

(1 Billion Terabytes) Size Limit