What cmdlet did Serah use to parse the GPTs of the hard disks and analyze the boot sector?

The cmdlet that Serah used to parse the GUID Partition Tables (GPTs) of the hard disks and analyze the boot sector is indeed related to gathering boot sector information. Among the available options, "Get-BootSector" effectively conveys the specific function of retrieving and analyzing details regarding the boot sector on a disk.

This cmdlet is appropriate for tasks related to examining how the disk is structured, identifying partitions, and examining the boot sector's content, which is crucial in the process of digital forensics. Understanding the boot sector is vital, as it serves as the initial part of a disk that contains information about how the disk is organized, including the GPT layout in modern systems.

The other options do not directly indicate a function that aligns with boot sector analysis in the same way. They may reference disk or partition information but lack the specificity required for focusing on the boot sector itself. The understanding of these cmdlets is integral to conducting detailed analysis within digital forensics.