PDStdUtils31- Bootable ProDOS disk with utilities PDStdUtils31.dsk is a bootable ProDOS 5.25" .dsk disk image This file may be used on an Apple II emulator or converted back to diskette form via a PC-->Apple2 ADT transfer (or, the file may be converted to diskette on a 128k Apple II via DSK2FILE or, on a IIgs, via ASIMOV). See Csa2 File Utilities FAQs. PDStdUtils31.sdk is a bootable ProDOS disk in shrinked disk form This file should be unshrinked to 5.25" diskette using 8-bit ShrinkIt. See Csa2 File Utilities FAQs for more about ShrinkIt. Contents ProDOS v2.0.3 and BASIC.SYSTEM (128k) Startup Program Selector Apple ProDOS Utilities v3.1 1989