EFI_ACPI_5_1_FPDT_FIRMWARE_BASIC_BOOT_RECORD.OsLoaderStartImageStart

Timer value logged just prior to launching the previously loaded OS boot loader image. For non-UEFI compatible boots, the timer value logged will be just prior to the INT 19h handler invocation.

struct EFI_ACPI_5_1_FPDT_FIRMWARE_BASIC_BOOT_RECORD
UINT64 OsLoaderStartImageStart;

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