Skip to main content

Documentation Index

Fetch the complete documentation index at: https://mintlify.com/mihaip/infinite-mac/llms.txt

Use this file to discover all available pages before exploring further.

Infinite Mac’s custom configuration dialog lets you assemble a bespoke emulator session from scratch. You can pick any combination of system disk, emulated machine, RAM size, screen resolution, and additional disk or CD-ROM images — then launch it, share it as a URL, or embed it on your own site. Every option you set is reflected in the URL in real time, so the resulting link fully describes the session.

​
Opening the dialog

Click the Run… button on the Custom tile at the bottom of the disk grid (under the current year heading). Alternatively, click the Customize… button on any standard disk tile to pre-populate the dialog with that release’s defaults.

​
Configuration fields

​
Machine

Choose the emulated hardware model from a grouped dropdown. Machines are organised into four groups:
GroupEmulator
68KBasiliskII
68K (Experimental)Snow
PowerPCSheepShaver, DingusPPC, PearPC
NeXTPrevious
The emulator type in use is shown below the dropdown as a hint. Changing the machine may reset the RAM size if the current selection is not available on the new model. URL parameter: machine=<name> (e.g. machine=Quadra+650)

​
System disk

Select the boot disk from a dropdown that groups options by platform:
  • Mac (System Software through Mac OS 9)
  • Mac OS X
  • NeXT
  • A/UX
  • Floppy Disks
You can also attach a local disk image file by selecting Disk File… from the bottom of the dropdown. Supported formats are .img, .iso, .dsk, .hda, .toast, .cdr, and .bin. Multiple disks can be added with the + button; use – to remove one. URL parameter: disk=<display-name> (e.g. disk=System+7.5.5). Repeat the parameter for multiple disks.

​
RAM size

Each machine offers a fixed set of supported RAM sizes; the first value in the list is the default. Selecting a smaller amount may prevent some operating system versions from booting. URL parameter: ram=<size> (e.g. ram=8M)
Not all RAM/OS combinations work. For example, System 7.5 requires at least 4 MB of RAM on most machines.

​
Screen size

ValueBehaviour
autoFills the available browser viewport (default)
windowOpens in a floating window at the machine’s native size
fullscreenRequests the browser’s full-screen API
URL parameter: screenSize=auto|window|fullscreen|<W>x<H>

​
Built-in disks

Infinite HD

A large pre-populated hard disk containing representative software for the selected era. Enabled by default. Not available on all machines (e.g. MFS-only early Macs do not support it).

Saved HD

An empty 1 GB disk whose contents persist across browser sessions using the browser’s storage APIs. Enabled by default when the browser supports it. Not available on all machines.
URL parameters: infinite_hd=true|false, saved_hd=true|false

​
Disk URL

Mount a raw disk or CD-ROM image directly from a URL without downloading it first. The image is streamed in chunks on demand, so large images (such as full CD-ROMs) load quickly. Requirements:
  • The file must be a raw .iso, .img, .toast, or .bin (not compressed or wrapped).
  • The hosting server must support HTTP range requests.
  • The domain must be on the allow-list: archive.org, aresluna.org, edtecharchive.com, flanigan.us, fsck.technology, gildev.dev, img.classicmacdemos.com, macintoshgarden.org, mac.gdn, macintoshrepository.org, resources.cafe-megabyte.de, gardenmirror.oldapplestuff.com.
Each URL entry has a CD-ROM (read-only) checkbox. Uncheck it to mount the image as a read-write hard disk instead. URL parameters: disk_url=<url> for read-write disks, cdrom=<url> or cdrom_url=<url> for read-only CD-ROMs.

​
Advanced options

​
Custom date

Override the system clock to a specific date. This is useful for running time-limited or copy-protected software that has expired. URL parameter: date=YYYY-MM-DD

​
AppleTalk zone

Enable AppleTalk networking and assign this instance to a named zone. All browser tabs that share the same zone name can communicate over a virtual AppleTalk network. This field only appears when both the selected system disk and the emulator type support AppleTalk (Basilisk II and SheepShaver only). URL parameter: appleTalk=<zone-name>

​
BlueSCSI Toolbox

Enables experimental BlueSCSI Toolbox protocol support on DingusPPC, which allows files to be transferred between the emulated Mac and the host browser via a virtual SCSI device. URL parameter: blue_scsi=true

​
Debug mode

Enables extra console logging and a verbose boot sequence where supported (DingusPPC, Previous, PearPC). URL parameter: debug_log=true

​
Example URLs

A fully specified custom session with a Quadra 650, System 7.5.5, 8 MB RAM, and an 800×600 screen: 
https://infinitemac.org/run?machine=Quadra+650&disk=System+7.5.5&ram=8M&screenSize=800x600
Running System 7.1 on a Mac IIx with a CD-ROM image from archive.org: 
https://infinitemac.org/run?machine=Mac+IIx&disk=System+7.1&cdrom=https%3A%2F%2Farchive.org%2Fdownload%2Fexample%2Fdisk.iso
A SheepShaver session with AppleTalk enabled for zone friends: 
https://infinitemac.org/1999/Mac%20OS%209.0?appleTalk=friends
After configuring a session in the dialog, you can copy the resulting URL from the browser’s address bar and share it. Anyone opening the link will see exactly the same configuration.

Build docs developers (and LLMs) love

Get started for freeTalk to us