Having the label embedded in the boot loader meant that the loader did not itself need to contain code to locate and read the label from the disk. However, this system only works when the computer firmware simply loads and executes the boot loader without attempting to determine whether it is valid.
Having the label integrated into the boot loader meant that the loader did not require its own code to find and read the label from the disk. However, this system only functions when the computer firmware merely loads and runs the boot loader without checking its validity.