Articles, notes and random thoughts on Software Development and Technology
The key x86 hardware spec in UTM for DOS, Windows 3.1, 95 and 98 guests in order to get CDROM support appears to be this 1996 one:
If you pick the 2009 PC, most installers will fail when you get to the MSCDEX CDROM drivers.
Let’s attach the floppy disk images and start it up!
Done!
A while back I was playing with UTM to setup an x86 VM on my M1 MacBook to install Windows 98 from an iso. I got as far as booting and starting the install but then ran into issue with the MSCDEX driver on subsequent boots during the install where it would no longer see the virtual CDROM drive and so could not complete the install:
From some additional playing around, it seems there is a major difference in the virtualized x86 PC hardware between this x86 2009 option which has the CDROM driver issue:
and this older 1996 version which does work and the install will complete successfully:
A couple of additional findings:
In the Input settings disable USB input (the default is USB3.0 support) and this will give you a mouse:
Success!
I’ve run into this a few times, so leaving some notes for myself for next time,
By default, attempting to use “import x from ‘y’ ” style ES6 module imports with Jest will give you this error:
SyntaxError: Cannot use import statement outside a module
With node16, support for modules is added with the experiemental-vm option, so update your package.json to add a script executing jest with this flag:
"test": "node --experimental-vm-modules node_modules/.bin/jest"
and then also in your package.json, add:
"type": "module",
If you search for the ‘cannot use import statement outside a module error there are plenty of recommendations, including more elaborate babel transpile ES6 modules to CommonJS style requires.
Depending what you’re doing maybe you’ll need some of the other approaches too, but I found the above 2 steps to be the bare minimum
If you’re just starting out and learning Java, avoid the temptation of defining anything as static until you understand what this modifier does and why/when you need to use it: no static Class properties, no static methods.
The only use of static while you’re starting out is in your main method. You don’t need it anywhere else. You’ll avoid a lot of unexpected and unexplainable behavior as a result.