GUID Partition Table (GPT)
https://en.wikipedia.org/wiki/GUID_Partition_Table

Protective MBR (LBA 0) for limited backward compatibility,
MBR partition table of single partition of type EEh (GPT)
encompasing "entire" drive (as much of the drive as can be represented
in an MBR).
Hybrid MBR (LBA 0 + GPT) In operating systems that support GPT-based
boot through BIOS services rather than EFI, the first sector may also
still be used to store the first stage of the bootloader code, but
modified to recognize GPT partitions. The bootloader in the MBR must not
assume a sector size of 512 bytes.

GPT header is in LBA 1
The GPT header has a pointer to the partition table (Partition Entry
Array), which is typically at LBA 2.  Each entry in the partition table
has the same size, which is 128 or 256 or 512, etc., bytes; typically
this size is 128 bytes.  The UEFI specification stipulates that a
minimum of 16,384 bytes, regardless of sector size, are allocated for
the Partition Entry Array.  Thus, on a disk with 512-byte sectors, at
least 32 sectors are used for the Partition Entry Array, and the first
usable block is at LBA 34 or higher, while on a 4,096-byte sector disk,
at least 4 sectors are used for the Partition Entry Array, and the first
usable block is at LBA 6 or higher.

In addition to the primary GPT header and Partition Entry Array, stored
at the beginning of the disk, there is a backup GPT header and Partition
Entry Array, stored at the end of the disk. The backup GPT header must
be at the last block on the disk (LBA -1) and the backup Partition Entry
Array is placed between the end of the last partition and the last block.