Questions tagged [mac-os-classic]

The classic Apple Macintosh operating system family: System 1–7, Mac OS 8–9.

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How does the Apple IIgs color compare to the Apple Macintosh color?

There has been an interesting discussion of how to convert Classic Macintosh Color to sRGB, which begs a second question. How does color on the IIgs compare to that of Classic Macintosh? I'm asking ...
Michael Shopsin's user avatar
11 votes
3 answers
3k views

Classic Mac OS colors to modern RGB

I want to find a way to convert RGB colors used by classic Mac OS to RGB colors that are understandable to modern image editors and to web browsers. The two palettes that are subjects of my interest ...
yrslv2022's user avatar
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2 votes
1 answer
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Trying to install Mac OS 9.2.1 on an iMac G3 (slot loader) but no hard drive detected

I recently acquired an iMac G3 (slot loader) and I am trying to install Mac OS 9.2.1 on it. OS installer seems to boot to Mac OS just fine. The problem is when I try to run the installer, it doesn't ...
old_school9999's user avatar
1 vote
0 answers
162 views

Error message every time I try to launch Mac OS classic

I'm on an iMac G3 running OS 10.3 - trying to launch OS classic 9.2. Every time I try to launch it, regardless of if I have extensions turned on or off, I get the error message: The volume for "...
Phoebeee's user avatar
7 votes
1 answer
252 views

Open an RSRC "sound file" from a Mac OS 6/9 application

I have been looking in the files of this 90s Mac game MacSki, made by D. Cook. Using Infinite Mac emulator, I've been able to open it and make it work quite well (some keyboard issue, well). We obtain ...
Luc's user avatar
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12 votes
1 answer
250 views

Layout of pre-APM Apple partition map

Page 3-25 of Inside Macintosh: Devices describes the format of a partition map entry. The definition of the pmSig field says: The partition signature. This field should contain the value of the ...
fadden's user avatar
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3 votes
0 answers
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Mac OS classic: cannot open resolver [closed]

A new, exciting error on macOS 7.5.5 — my fresh install of Open Transport 1.3 delivered working connectivity, but after a crash an error “cannot open resolver” has been persistently in the way of TCP/...
0xF2's user avatar
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4 votes
3 answers
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Mac OS Classic install error "the installer document is unusable for installation [...]" (original disks message)

Attempting to upgrade Mac OS Classic 7.5.0 to 7.5.3 via floppies that have been tested successfully on a Performa 460... but things fail ominously on my IIsi with "This is not the correct "⟨...
0xF2's user avatar
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5 votes
1 answer
824 views

Do any 'remote control' solutions exist for Mac OS 9.x?

Windows users have had RDP forever. Its fast, it works, and it's ubiquitous - but what options exist for remote controlling a Mac OS 9.x computer on my local network? I've read that a VNC server ...
Geo...'s user avatar
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1 vote
1 answer
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System 7.5 install fails (mac IIsi)

I have been restoring a rather iconic (and temperamental!) Mac IIsi. I have trouble installing System 7.5 on an IBM drive with Apple firmware that OS 7.0 installed just fine on. I am puzzled by the ...
0xF2's user avatar
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4 votes
2 answers
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Drive icons for LaCie Tsunami

I am restoring a LaCie Tsunami 240 external disk for the Macintosh. I found a replacement Quantum LPS240 and the hardware side is well on its way. This drive displayed a custom icon in System 7 (a ...
0xF2's user avatar
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2 votes
1 answer
295 views

How do I change the MAC address of a iMac G3?

I want to connect an iMac G3 running Mac OS 8.6 to my Ethernet network. The easiest way for me to do this is to change the iMac's MAC address. Is it possible to change the MAC address and, if so, how ...
andypea's user avatar
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11 votes
5 answers
2k views

Early implementations of the `system()` call in a consumer OS

Nowadays, it's easy to take for granted the system() call (as defined in POSIX), which allows a user program to easily execute a child process and wait for it to complete. Obviously, this is a trivial ...
Brian H's user avatar
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4 votes
2 answers
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Send serial data to Macintosh SE?

I am new to anything vintage computing and would like to build a simple project with my Macintosh SE. My Hello World goal here is to simply show a string of text received from the serial port on the ...
Eric Jones's user avatar
5 votes
2 answers
542 views

ResEdit Decompilers

What de-compilers were available for ResEdit? A friend used a de-compiler to break the copy protection on F/A-18 Hornet and I remember having one to examine how programs worked. To clarify by de-...
Michael Shopsin's user avatar
5 votes
2 answers
925 views

Cannot "see" a SCSI2SD device from a Mac SE/30 in any configuration

I've got a SCSI2SD V5.2 board connected to the internal 50-pin SCSI connection of a Mac SE/30. The Mac cannot "see" it, in any configuration I've attempted. I have tried: Using the stock ...
Ben Zotto's user avatar
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2 votes
1 answer
163 views

macOS Spaces first appearance under any guise? [closed]

Wikipedia tells me I had to wait until OS X Leopard in 2006 to first use Spaces. It does mention earlier 3rd party structures in an outside reference but the Wayback link quoted doesn't actually ...
Tetsujin's user avatar
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4 votes
0 answers
239 views

Task manager for Mac OS 8/9

Does there exist either an embedded task manager, or a third party task manager for for Mac OS 8/9? So I can: View currently running tasks Kill processes View system load
TAbdiukov's user avatar
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30 votes
4 answers
7k views

Why did MacOS Classic choose the colon as a path separator?

I mean, all other OSs that I know of use some form of slash as a path separator, so why did Apple choose the colon?
gjvnq's user avatar
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1 answer
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Is it possible to change keyboard key maps on System 6?

For aesthetic reasons, I would prefer to run a US-english variant of System 6.0.8, but all my keyboards are of a Scandinavian layout. Is it possible to swap key maps (using ResEdit?) to use my Finnish ...
vkoskiv's user avatar
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8 votes
1 answer
361 views

Looking for educational AI game for classic Mac OS

I'm looking to find the name of a (purportedly) educational Mac game I purchased from a book fair handout around 1990–91. The concept was that you would make up the rules to your own board game on a ...
arsenius's user avatar
  • 183
9 votes
2 answers
2k views

How do I allocate more memory to an app on Sheepshaver running Mac OS 9?

I'm trying to play Taskmaker on Mac OS 9 in Sheepshaver on OSX. Taskmaker tells me that it doesn't have enough memory to run in color. Within technical support it says that I have 512 megabytes total ...
schx's user avatar
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6 votes
2 answers
471 views

Name this Macintosh music application

There's an application that's been on my mind on and off for months now, I want to find clarity. Once upon a time, when MacOS was in black and white, there was a neat music composer/player ...
KlaymenDK's user avatar
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5 votes
1 answer
174 views

Microsoft Mail for AppleTalk

I want to tinker a bit with Microsoft Mail for AppleTalk, Version 3.1. I installed the System Extensions, they get loaded and the server itself shows up in the chooser with it's serial number. To ...
PoC's user avatar
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2 votes
1 answer
2k views

How to read old 3.5" Macintosh formatted floppies on a MacBookPro

I have connected a USB external floppy drive to my Macbook Pro (OSX El Capitan). I am unable to "view" the external drive, and hence unable to access the floppy content. I have inserted a floppy, ...
O.K's user avatar
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6 votes
1 answer
442 views

Searching for Swedish Mac game from the early 1990's where you try to sneak out of the house

I was given a funny, obscure game for Mac sometime in the 1994 to 1996 timeframe. Unfortunately I have no idea what the game was called, but I'd like to track it down. The game, which was in color, ...
Haydentech's user avatar
3 votes
1 answer
224 views

Ways To Test iMac G3 Before Buying

I am going to buy an old iMac G3 Over the next couple of days/weeks, and I want to make sure that I am buying a system with no problems. I usually ask for the serial number and good pictures before ...
Randall Hall's user avatar
6 votes
2 answers
2k views

What is the highest version of System 7 that can be run on a Mac SE/30?

My recently restored Mac SE/30 has System 7.0 running on it at present, booting from an original SCSI HDD. I’m missing a few key features, like disk image mounting, which I understand were added in ...
Mark Riley's user avatar
7 votes
2 answers
408 views

Metrowerks Modula-2 Dev Environment on Mac/SE30 (68030)

While at Uni in the 90’s in England, we learnt and used Modula-2 extensively as our high-level programming language. Just restoring a Mac SE/30, which is also from that era, and would love to be able ...
Mark Riley's user avatar
7 votes
3 answers
1k views

How can I debug a Mac OS Classic application?

I have a Mac OS Classic application (a game) that I want to "debug". It has data files in a unique format than I am attempting to reverse-engineer. I've made some progress with a hex editor, but ...
Greg Kennedy's user avatar
5 votes
1 answer
420 views

Macintosh System 6 on Quadra?

System 6 is not officially supported on 68040 Macintoshes, but has anyone successfully run System 6 on an early Quadra, e.g. the Quadra 700?
Zane Kaminski's user avatar
7 votes
1 answer
3k views

How to install System 7.5.5 on a Macintosh SE/30 using floppies?

I have a Macintosh SE/30 with a formatted Disk. I'd like to install the latest System 7 on it that will run. According to Wikipedia that should be 7.5.5. According to several sources Apple has made it ...
Andreas Hartmann's user avatar
3 votes
2 answers
528 views

68k macintosh lowmem system globals

While digging through a classic Mac 68k disassembly I got to the point where I need to know more about the "Boot Globals" residing in lowmem's system global variables. BootGlobPtr lives at $DDC, that'...
Axel Muhr's user avatar
2 votes
2 answers
538 views

Programming on Macintosh Centris 610

I just bought a Macintosh Centris 610 and I'm trying to do some C programming on it. But I can't find the terminal and someone told me there isn't a terminal on classic MacOS. My goal is to have a ...
user avatar
10 votes
2 answers
611 views

Trying to build First Mozilla Release (Netscape 5)

so I've been doing some digging, and I've downloaded the first release of mozilla source code. I'm trying to build it in sheepshaver using codewarrior 4 pro. Ultimately my goal is to try and hack ...
acolchagoff's user avatar
  • 1,213
8 votes
1 answer
256 views

How to disable existing, unknown, password from AppleTalk on MacOS 7/8?

My Grandparents computers are connected to each other via an ethernet cable, and communicate via AppleTalk. One of the computers is an iMac G3 with Mac OS 8 and the other is a "SuperMac" from the ...
fishybell's user avatar
  • 183
25 votes
4 answers
13k views

Why did Mac OS 7 perform poorly with virtual memory enabled?

A comment in another question about supervisor and user modes in the Motorola 68000 processors, claimed that "performance was abysmal" with virtual memory enabled. An InfoWorld article about System 7 ...
snips-n-snails's user avatar
13 votes
1 answer
1k views

What was the significance of the cursive 'ƒ' in an application name?

I feel like I used to know the answer to this... In classic Mac days, probably the early 90s and before, some applications would have a cursive / decorative ƒ character in their names. What was the ...
Coxy's user avatar
  • 286
10 votes
1 answer
857 views

Why does my Macintosh SE FDHD only see 2 of the 4 megabytes of RAM?

I have a whole bag of 30pin SIMMS so I thought I would see about upgrading the 1 MB of RAM in my Mac SE FDHD to 4 MB. The original RAM had four sticks of OKI M41256A. These SIMMs have 8 chips each. ...
cbmeeks's user avatar
  • 8,461
4 votes
1 answer
1k views

My Macintosh SE will not boot to hard drive. Can I boot from ROM?

I have a Macintosh SE. It's the version that has a stock 68000, one floppy drive and one hard drive. I believe the hard drive is dead. It spins up but all I get is a flashing question mark in the ...
cbmeeks's user avatar
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5 votes
1 answer
502 views

What are some names of professional music software for the Macintosh Classic / SE?

I'm not asking for opinions, recommendations or reviews. I'm looking for professional, graphical music creation software for the classic line of Macintosh computers. I'm not looking for mod or ...
cbmeeks's user avatar
  • 8,461
12 votes
1 answer
750 views

How are File Timestamps recorded in classic Mac OS?

When I save a file it has a 'Created At' and 'Updated At' Value saved as well. I would like to know HOW these values are saved? Are they saved as an integer representing a number of seconds since 1904?...
acolchagoff's user avatar
  • 1,213
18 votes
1 answer
1k views

Did the Macintosh Classic series use DMA to display video?

I'm learning more and more on how the original Macintosh series worked. I can't, however, find information in my research on how the Mac's video generator accessed the video RAM. My assumption is ...
cbmeeks's user avatar
  • 8,461
7 votes
2 answers
1k views

SheepShaver failing to install application; Not Enough Memory

I am trying to install "Kid Pix Deluxe 4" on Mac OS 9 using SheepShaver on Ubuntu 16.04. A problem I am having is that when I try to install it, I get an error saying that I don't have enough memory. ...
Jordan Baron's user avatar
13 votes
2 answers
805 views

Creating an System Extension (INIT) for classic Mac OS

I have some old Macs that I would like to remove their clock batteries so that I don't have to worry about them leaking and destroying logic boards. That being said I do want to operate them from time ...
acolchagoff's user avatar
  • 1,213
17 votes
4 answers
2k views

A good method for formatting a modern device in HFS (Not HFS+)

I started this project ages ago and it's just been sitting on my bench for ever. I have this old MacIIci and I put a LAN card in it, maxed out the memory, has the turbo proc in it. The next step I ...
Digital Shiba's user avatar
5 votes
2 answers
1k views

Dual-booting Windows 98 on an iMac G3

Is it possible to dual boot Windows 98 or Windows 95 on an iMac G3 running Mac OS 9.2?
Jordan M. Baron's user avatar
9 votes
3 answers
626 views

Building hello world on a Macintosh IIfx with mpw

I'm trying to compile a hello world object using mpw... I've created a file called hello.c on my desktop, contents are as follows: #include <stdio.h> int main(void){ printf("hello world!\n"); ...
acolchagoff's user avatar
  • 1,213
3 votes
2 answers
4k views

No sound on SheepShaver for Windows 10 [closed]

I am running Mac OS 9 through SheepShaver on Windows 10, and I can't get sound to work. I am using an Old World ROM because the New World ROM doesn't work, it causes SheepShaver to crash. I tried to ...
Jordan M. Baron's user avatar
3 votes
2 answers
705 views

Desktop folder locked in SheepShaver

I am using SheepShaver on Windows 10, and I enabled the option that allows SheepShaver to put a My PC icon so I could access files from my actual PC. However, when I try to drag files from My PC to ...
Jordan M. Baron's user avatar