Abstract: Glass disc turnover racks for simplifying the insertion of glass discs into a Laser Beam Recorder cartridge are described. The discs are first inserted into the turnover rack and subsequently transferred into the cartridge. The construction of the turnover rack makes it easier to insert the discs in the cartridge. Turnover racks according to the invention comprise a plurality of slots wherein one of the slots has a length that is less than the diameter of the glass disc. Methods of inserting glass discs into the cartridge and use of a glass disc turnover rack to insert glass discs into the cartridge are described.