Warning: This workaround is for advanced users only. To resolve this problem, re-format the floppy disk with Windows 98, Windows Millennium Edition, Windows NT, Windows 2000, Windows XP, or Windows Server 2003. The media descriptor byte is located in the BPB of the boot sector at offset 21 (15h) and in the first byte of each FAT on the disk. Therefore this problem does not occur with these older operating systems. With MS-DOS and Windows 95, you do not have to set the media descriptor byte. The media descriptor indicates the type of medium currently in a drive. Older product disks may also not have the media descriptor byte. Some older preformatted floppy disks do not contain a media descriptor byte. This problem occurs on disks that do not contain a media descriptor byte in the BIOS parameter block (BPB) of the boot sector. The same disk may work correctly with MS-DOS or Windows 95, or after you re-format the disk with Windows 98, Windows Millennium Edition, Windows NT, Windows 2000, Windows XP, or Windows Server 2003. Yes, Windows (still) uses FAT12 as the default file-system for floppy disks.STOP: The disk media is not recognized, it may not be formatted. FAT12 for IBM and clones, GEMDOS for the Atari ST and Atari DOS for the Atari 400/800, Disk ][ format for Apple II, OFS/FFS for Amiga, CBMFS for C64, etc.)įigure 1 shows an example of a couple of games available for different platforms with corresponding labels.Īnd if I format the floppy on my Windows PC, does it still remain “IBM It would indicate both the format of the binaries as well as the file-system layout of the disk (e.g. The boxes would then be marked with the appropriate label indicating which platform the game was for. For example, SSI (Strategic Simulations, Inc.) frequently released their games for Amiga, Apple, Atari ST, Atari 400/800, Commodore 64/128, IBM, and occasionally a few other niche platforms. What exactly is the meaning of “IBM formatted” and what is theĭespite what some may think, in the past, much software was ported to most of the available platforms (which was a pretty big feat since there were so many back then, but without the benefit of cross-platform, portable code frameworks).Īpplication programs were often cross-platform, but cross-platform games were even more common. I have often come across floppy disks in the past that were marketed
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