5.25-inch floppy disks expected to help run San Francisco trains until 2030 "We have a technical debt that stretches back many decades." ...

There's some confusion here. The article and its photo refer to 5.25 inch floppies. Even on the linked TV report, the lady reporter also refers to the floppy as 5 and a quarter inch floppy disk.

The contract entails that Hitachi Rail will transition the ATCS from its current 5.25-inch floppy disk system to one that uses Wi-Fi and cell signals to track exact train locations.

The 8-inch floppy disk was eventually succeeded by the 5.25-inch floppy disk, which was then overtaken by the 3.5-inch floppy disk in the 1980s and 1990s.

On October 15, the San Francisco Municipal Transportation Agency (SFMTA) entered into a $212 million contract with Hitachi Rail to get its Muni Metro light rail control system off of floppy disks ...

Mac software used to be distributed on 3.5-inch floppy disks. Now, using the MacDisk utility, you can read them on modern Windows computers.

No, really! Floppy drives still live on in many surprising places, and not just the homes of die-hard techies.

The San Francisco Municipal Transportation Agency, which runs the city's Muni Metro, says it still uses floppy disks to run the trains, as it has since 1998.

To the average consumer, floppy disks have not been relevant for a long time. Your PC might not even have an optical disk drive these days, let alone a 3.5-inch or 5.25-inch floppy drive.

Floppy disks (FDs), magnetic disks that record information on personal computers, were widely used mainly from the 1980s to the mid-2000s. Programmer Jonathan Palant explains about such FD.

The contract entails that Hitachi Rail will transition the ATCS from its current 5.25-inch floppy disk system to one that uses Wi-Fi and cell signals to track exact train locations. The deal is still ...