Also in double density mode the standard MFM encoding was modified from the standard to prevent false header detection in data.ħ20 KB (245 tpi, 80 tracks/side, double-sided, double-density)Ģ1.4 MB (25 MB unformatted), double-sided, 526 cylinders × 40 sectors × 512 bytesĢ1 MB,DS, 755 cylinders x 27 sectors per side x 512 bytesġ20 MB, 1,736 cylinders, 51-93 sectors, 26K to 47 KB/track ġ44 MB, 1,960 cylinders, 50-90 sectors, RLL, 281,504 sectors Ībbreviations: SS = Single density DD = Double density TD = Triple-density QD = Quad density HD = High density ED = Extra-high density LS = Laser-servo HiFD = High-capacity floppy disk SS = Single-sided DS = Double-sided The RX02 mode is not compatible with other standard drives since the headers are always in single density mode but the data is written in double density mode. Note: "RX02 8-inch Floppy Drive Information". SS = Single Sided SD = Single Density DD = Double Density tpi = Tracks per inch bpi = Bits per inch SS = Single Sided DS = Double Sided SD = Single Density DD = Double Density N/A = Not Applicable tpi = Tracks per inch bpi = Bits per inchĭigital Equipment Corporation used the following formats on 8-inch disks: This is a list of 8-inch floppy diskette formats as introduced by IBM. This is a list of different floppy disk formats. For a more in-depth textual description of some of these formats, see Floppy disk variants.Ĩ-inch, 5 + 1⁄ 4-inch, and 3 + 1⁄ 2-inch floppy disks
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