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3 + 1 ⁄ 2-inch floppy disks have a sliding tab in a window on the right side (open = protected). Iomega Zip disks were write-protected using the IomegaWare software. Syquest EZ-drive (135 & 250 MB) disks were write-protected using a small metal switch on the rear of the disk at the bottom.
Two holes at the bottom left and right indicate whether the disk is write-protected and whether it is high-density; these holes are spaced as far apart as the holes in punched A4 paper, allowing write-protected high-density floppy disks to be clipped into international standard ring binders. The dimensions of the disk shell are not quite square ...
A Copylock-protected floppy disk contains one long track, known as the Copylock Serial Track, which can be read on a standard floppy drive but is impossible to write without a sophisticated disk duplication machine. The disk contains a special loader which is heavily encrypted and can read and decode the Copylock Serial Track.
The KryoFlux controller plugs into a standard USB port, and allows normal PC floppy disk drives to be plugged into it. Because the device operates on data bits at the lowest possible level with very precise timing resolution, it allows modern PCs to read, decode and write floppy disks that use practically any data format or method of copy ...
Write Data Output 24 WGATE# Floppy Write Enable 0=Write Gate Output 26 TRK0# Track 0 Fault/Track 0 in uPD765 controller Input 28 WPT# Write Protect 0=Write Protect Input 30 RDATA Read Data Input 32 HDSEL#/SIDE Head Select / Side select Two uses, see application or use for details. [clarification needed] (Side select:1=Side 0/0=Side 1) Output 34
The 3 + 1 ⁄ 2-inch disks had, by way of their rigid case's slide-in-place metal cover, the significant advantage of being much better protected against unintended physical contact with the disk surface than 5 + 1 ⁄ 4-inch disks when the disk was handled outside the disk drive. When the disk was inserted, a part inside the drive moved the ...
A bit nibbler, or nibbler, is a computer software program designed to copy data from a floppy disk one bit at a time. It functions at a very low level directly interacting with the disk drive hardware to override a copy protection scheme that the floppy disk's data may be stored in. In most cases the nibbler software still analyses the data on ...
A Maxell-branded 3-inch Compact Floppy Disk. The floppy disk is a data storage and transfer medium that was ubiquitous from the mid-1970s well into the 2000s. [1] Besides the 3½-inch and 5¼-inch formats used in IBM PC compatible systems, or the 8-inch format that preceded them, many proprietary floppy disk formats were developed, either using a different disk design or special layout and ...