Setup Windows VM on Mac for Electron Testing (UTM Guide)
Setting up UTM virtual machine on macOS for testing Windows and Linux Electron applications without physical hardware. Apple Silicon ARM64 architecture requires specific tools for x86 compatibility. Complete walkthrough covering UTM installation, Crystal Fetch ISO downloader for Windows 11, VM configuration, and critical disk space warning from real testing experience.
Why Virtual Machines for Electron Development:
Building macOS apps with Electron but need Windows/Linux testing
Apple Silicon (M-series) uses ARM64 architecture incompatible with standard Windows/Linux
UTM provides ARM64-to-x86 compatibility layer for Mac
VMware no longer works properly on Apple Silicon processors
Intel-based solutions don't translate to ARM architecture
Cross-platform distribution requires testing on actual target OS
UTM Setup Process:
Download UTM from mac.getutm.app (free version, avoid App Store $9.99)
Install Crystal Fetch ISO Downloader from Mac App Store for Windows ISOs
Select Windows 10 or Windows 11 based on testing requirements
Choose Apple Silicon architecture in Crystal Fetch settings
Download latest Windows 11 version ISO file
Open UTM and create new virtual machine
VM Configuration Steps:
Click create virtual machine in UTM interface
Select virtualize option then choose Windows
Allocate RAM (8GB recommended for testing)
Assign CPU cores based on available resources
Browse and select downloaded Windows 11 ISO file
CRITICAL: Set disk size to minimum 30GB (not 20GB)
Enable both UEFI boot and TPM 2.0 options
Continue through setup wizard
Critical Disk Space Warning:
20GB disk fills completely making VM unusable
Windows 11 uses approximately 19GB after installation
No room for application testing or updates
Must delete VM and recreate with larger disk
Recommend 30GB minimum, preferably 35-40GB
Cannot resize disk after VM creation in UTM
Perfect For:
Electron.js developers on macOS targeting Windows/Linux
Solo founders building cross-platform desktop applications
Teams without dedicated Windows/Linux testing hardware
Apple Silicon Mac users needing x86 compatibility
Anyone in macOS 101 Electron series
Developers avoiding expensive hardware purchases
Common Issues and Solutions:
Low disk space: Use minimum 30GB allocation
Performance lag: Allocate more RAM and CPU cores
ISO download fails: Try different Crystal Fetch version selection
VM won't boot: Ensure UEFI and TPM 2.0 enabled
Shared folders not working: Consult UTM user guide
Network connectivity issues: Check UTM network settings
Upcoming Content Preview:
Google OAuth integration in Electron applications
Cannot open browser window directly in Electron for Google sign-in
Google flags embedded browser auth as spam/security risk
Solution requires Next.js server as authentication intermediary
Full tutorial coming in next video
Prerequisites:
macOS with Apple Silicon (M1, M2, M3, M4 processors)
Minimum 16GB RAM recommended for VM allocation
50GB+ free disk space for VM and ISO files
Basic understanding of Electron.js development
Completed previous macOS 101 series videos
Cost Considerations:
UTM completely free from official website
Crystal Fetch ISO Downloader free from App Store
Avoid UTM from Mac App Store ($9.99 unnecessary)
Windows 11 download free for testing/development
No additional licenses needed for VM testing
Timestamps:
0:00 - Introduction: Cross-Platform Testing Requirements
0:39 - Why UTM for Apple Silicon Macs
1:04 - Downloading UTM and Crystal Fetch
1:37 - Crystal Fetch ISO Download Process
2:26 - Creating Virtual Machine in UTM
3:10 - CRITICAL: Disk Space Warning (30GB Minimum)
3:46 - Installation Process and Next Steps
4:27 - Testing Applications in Virtual Environment
4:57 - Preview: Google OAuth in Electron Apps
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