.BASILISK_II_PREFS File Extension

Basilisk II Settings

Developer Christian Bauer
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Category Settings Files
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What is a BASILISK_II_PREFS file?

A BASILISK_II_PREFS file is a settings file used by Basilisk II, a 68xxx-based Macintosh PC emulator. It contains plain text that defines how Basilisk II emulates a Mac. BASILISK_II_PREFS is hidden by default, but can be viewed by configuring your PC to show hidden files.

More Information
Screenshot of a .basilisk_ii_prefs file in Microsoft Visual Studio Code
BASILISK_II_PREFS file open in Microsoft Visual Studio Code

Basilisk II is a Mac emulator used to boot macOS versions 7.x through 8.1. It is available for Windows, Linux, and macOS.

The program uses a settings file named .basilisk_II_prefs. This file is stored in a user's home folder. It contains dozens of plain text settings, each stored on a separate line. Information on each setting and what it controls can be found in Basilisk II's documentation.

How to open a BASILISK_II_PREFS file

You can open and edit a BASILISK_II_PREFS file in any text editor, such as Microsoft Notepad (Windows) or Apple TextEdit (Mac). To use a BASILISK_II_PREFS file with Basilisk II, place the file in your home folder (typically, the folder whose name is your username) and then start Basilisk II.

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Programs that open BASILISK_II_PREFS files

Windows
Mac
Linux
Updated July 5, 2022

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