Enlarge / If you’ve formatted a disk in Windows in the last 30 years, you may have come across this dialog box. (credit: Andrew Cunningham)

Windows 11 has done a lot to update and modernize long-neglected parts of Windows’ user interface, including many Settings menus and venerable apps like Notepad and Paint. But if you dig deep enough, you’ll still find parts of the user interface that look and work like they did in the mid-’90s, either for compatibility reasons or because no one ever thought to go back and update them.

Former Microsoft programmer Dave Plummer shared some history about one of those finely aged bits: the Format dialogue box, which is still used in fully updated Windows 11 installs to this day when you format a disk using Windows Explorer.

Plummer says he wrote the Format dialog in late 1994, when the team was busy porting the user interface from the consumer-focused Windows 95 (released in mid-1995) to the more-stable but more resource-intensive Windows NT (NT 4.0, released in mid-1996, was the first to use the 95-style UI).