From the Club 100 support files (www.club100.org)... TPDD2 BOOTING INSTRUCTIONS For the Tandy Portable Disk Drive 200K format... Tandy Catalog Number: 26-3814 You will need... 1) A working Tandy Portable Disk Drive, 200K version--it says "Tandy Portable Disk Drive 2" on the front. The "2" indicates the newer drive by Tandy that formats disks to 200K instead of 100K as a TPDD. 2) The "Utility Disk" for the TPDD2. Both the TPDD and the TPDD2 come with a disk marked "Utility Disk". Although these disks look identical there are major differences on the formatting and programming actually on the disk. If in doubt don't ask Tandy personnel, call Club 100. 3) Fresh or reasonably good batteries in working condition even though you may also be using an AC adaptor. 4) A TPDD2 cable--included--and a Model 100, 102 or 200 computer in good working condition. BOOTING THE DOS (disk operating system) FLOPPY Do the following... 1) Connect the TPDD2 to the laptop computer and turn the laptop computer on. 2) Turn the TPDD2 off. 3) Hold the Utility Disk up to the light and make sure the write protect window is open, not closed. The write protect window is the little 1/4" square in one corner of the disk. 4) Insert the Utility disk into the TPDD2 and close the door. 5) Go into BASIC on your laptop, enter the following program and follow the steps indicated. RUN"COM:98N1ENN After keying in the program and hitting enter, your laptop should look like it's doing nothing. This is good. Now, do the following... 6) Turn the TPDD2 on. 7) In less than 5 minutes, and if everything went as planned, you should see the FLOPPY program in your menu. This is the disk operating system (DOS) that Tandy invented. FLOPPY is not the best DOS in the world for the TPDD2--we think our TS-DOS is better--but at least FLOPPY works. You are now ready to use your TPDD2 and FLOPPY to access disks. This is the working condition for normal use. You no longer need to use your Utility disk and should put it away for safe keeping. --