There's no reason to open the laptop to access the disk from another computer. With a dock, that laptop gains an external SCSI port. And with an external SCSI

There's no reason to open the laptop to access the disk from another computer. With a dock, that laptop gains an external SCSI port. And with an external SCSI port, it can boot up in a mode wherein the whole laptop behaves like a standalone SCSI disk -- ready to use with whatever other computer with SCSI from the past 40-ish years that one can muster up.