Clone CD

There are no bad sectors on a PSX original There may be sub-channel data (which CloneCD handles and why this is deemed 1:1) for protection. You then burn in DA0-RAW mode to present that 1:1 image to CD-R if the burner is 100% compatible.

A pressed CD original contains information on tracks not accessible to readers/burners unless they have a proprietary mechanism for doing this - which the PS2 has - I don't know about the PS1.