but they are harder to find than the DISKII and the DISKII Controller. thay also used 5.25 Floppies and stored 140 kB on them ). apple also sold 5.25 Drives with a thick cable and 19DB Plug on backside that could be 'daisy-chained' too and they were compatible to the DISK II ( i.e. You might use that drives ( up to 4 of them ) and they may be 'daisy-chained'. Of course also a few so called 'Standard Drives' with 5.25 ' and 34 pin connector might be used, but due to the non standard writing of the apple these drives need a modification to fit with the Apple and the most Common Standard 5.25 Drive will be the TEAC 55F the uses 5.25 DSDD Floppies that contain 640 kB.īut as mentioned above the most common to startup with - will be the Unidisk. so if you want to use ADT for transfer it will be a good choice to have a Set of Controller & Drive availiable for that purpose. About 70% of the Diskimages in the web are related to this format. most common the DISK II Interface from old AppleII or IIe which permits to connect Apple II DISK II Diskdrives (140kb ). There are several dozends of interfaces out there to connect drives to the IIGS. the Card might stay there but it can´t be used. it´s the default Drive for the IIGS and if one is connected it is activeted by hitting the 'Option'key on powerup and in the Options =>Slot=> at slot 6 the 'Diskport' must be actived by switching from 'your Card' to 'Diskport' - that also means that no Expansion Card is active on slot 6. the DoubleSided DoubleDensity Disks store 800 kB. that´s the so called Unidrive and it might be connected with its plug directly to the Diskport at the backside of the Computer. If you view several photos of IIGS´s in Internet there will be quite a lot of them with a 3,5 ' drive settled beside.

Ibm formatted floppy disks