![]() Unlike MBR, for every partition in GPT, a name is defined in the partition table.The GPT header has a pointer to the partition table, which, as noted earlier, resides in the third sector with LBA 2." The second sector with LBA 1 is dedicated to the GPT header, and finally, the partition table comes after that. So in GPT, the first sector (marked as LBA0) is for “the protective MBR. MBR first started working with LBA, and now, GPT uses the same addressing. GPT uses the Logical Block Addressing (LBA), an alternative to historical cylinder-head-sector addressing.As mentioned before, GPT uses sector two thus, for compatibility reasons, the disk's first sector is reserved for MBR, AKA “protective MBR," and the next sector is the “GPT header.".However, in the GPT, a section called "GPT header" holds the location information of partition tables. ![]() ![]() The partitioning information in an MBR disk is stored in the master boot record.
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