Analysis of information sources in references of the Wikipedia article "Floppy disk" in English language version.
Turns out the obsolete floppy is way more in demand than you'd think. ... I expect to be in this business for at least another four years.
Information Systems – Unformatted Flexible Disk Cartridge for Information Interchange, 5.25 in (130 mm), 96 Tracks per inch (3.8 Tracks per Millimeter), General, Physical, and Magnetic Requirements (includes ANSI X3.162/TC-1-1995) Specifies the general, physical, and magnetic requirements for interchangeability for the two-sided, 5.25 in (130 mm) flexible disk cartridge
Wozniak's technique would allow the drive to do self-synchronization ("soft sectoring"), not have to deal with that little timing hole, and save on hardware.
Shugart is one of the major subscribers to the 31⁄2-inch micro-floppy standard, along with Sony and 20 other company ... Its single-sided SA300 micro-floppy drive offers 500K of unformatted storage. Shugart's Kevin Burr said the obvious next step is to put another 500K of storage on the other side of the diskette and that the firm will come out with a double-sided 1-megabyte micro-floppy drive soon.
Single-sided double-density (SSDD) systems used original media, 40 tracks and MFM encoding for a capacity of around 160 KB/diskette. Double-sided double-density (DSDD or sometimes "2D") systems obviously doubled the above to about 320 KB/diskette.access-date=20 November 2024
The diskette is about 8" (20 cm) square and has a net capacity of 1898 128-character records – about one day's data entry activity. Each of the diskette's 73 magnetic recording tracks available for data entry can hold 26 sectors of up to 128 characters each.
Wozniak's technique would allow the drive to do self-synchronization ("soft sectoring"), not have to deal with that little timing hole, and save on hardware.
Information Systems – Unformatted Flexible Disk Cartridge for Information Interchange, 5.25 in (130 mm), 96 Tracks per inch (3.8 Tracks per Millimeter), General, Physical, and Magnetic Requirements (includes ANSI X3.162/TC-1-1995) Specifies the general, physical, and magnetic requirements for interchangeability for the two-sided, 5.25 in (130 mm) flexible disk cartridge
The diskette is about 8" (20 cm) square and has a net capacity of 1898 128-character records – about one day's data entry activity. Each of the diskette's 73 magnetic recording tracks available for data entry can hold 26 sectors of up to 128 characters each.
