FakeDOS Turns Your Mac Into a 1990s PC That Only Pretends to Format C:

'C:\> FORMAT C:' – relax, it's just a screen saver

FakeDOS 2.0 is a free macOS screen saver that boots a pixel-perfect AWARD BIOS, counts through 32 MB of RAM, and leaves a blinking C:\> prompt where a ghost types DOS and Linux commands. Type FORMAT C: and it runs a terrifyingly realistic format sequence, but nothing is ever read, written, or deleted. It began in 1991 as a Turbo Pascal prank on a FidoNet BBS.

When you type FORMAT C:, FakeDOS shows a terrifyingly realistic format sequence, complete with percentage counter and head/cylinder display, but your actual drive is perfectly untouched.
  1. jrmg

    This is cool - but…

    It’s an app, not a system-integrated[1] screensaver?

    > Installation

    > Drag FakeDOS.app into /Applications.

    > Double-click to launch. It installs itself as a menu-bar icon.

    > Click the menu-bar icon to configure or start manually.

    > After the configured idle time (default: 5 min), FakeDOS takes over fullscreen.

    > Type EXIT to return to your real desktop.

    > Cmd + , opens six pages of pure control: idle time, warp speed, the ghost writer, sound and more. The PC speaker can be silenced. Your co-workers cannot.

    [1]: ScreenSaver.framework: https://developer.apple.com/documentation/screensaver

  2. Tsarbomb

    Maybe I'm blind, but is this closed source?

  3. Gormo

    Reminds me of the 'BSOD' module from Xscreensaver.

  4. RedShift1

    What exactly is this? Site doesn't work for me (ERR_SSL_PROTOCOL_ERROR). Gathering from the other comments, some screensaver that shows a DOS prompt?

  5. rlv-dan

    Way back I hacked together a VB6 application (don't remember what it did) but after a while it popped up a new window that faked a DOS prompt formatting the c drive. Then I send it to my best bud on April 1st with a message "Hey, check out this new program I made!" :-)

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