Resize Disk of your macOS VM in Proxmox

This guide has a video walkthrough, please consider watching the video here: https://youtu.be/x9CokQvbFYc

1. Increase the Disk Size in Proxmox In the **Hardware** tab of your VM, select your disk (e.g., `virtio0`) and click 'Disk Actions' at the top.

Enter the 'amount you want to increase it by', *not the new total size*.

Example: If your current disk is '250GB' and you want '500GB total', you must type '250'.

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2. Expand APFS Inside macOS After increasing the disk in Proxmox, macOS will not automatically use the new space. You need to expand the APFS volume.

Boot into your macOS VM, open 'Terminal', and run:

diskutil list

This will show your disks. Example: `disk0` might be '524.4GB', but the APFS container (`disk3`) is still only '255.8GB'.

⚠️ Your disk numbers may be different — double check before running commands!

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3. Repair the Disk Partition Run:

diskutil repairDisk disk0

Type 'y' when prompted.

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4. Resize the APFS Container Run:

diskutil apfs resizeContainer disk3 0

This expands the APFS volume to use all available space.

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5. Verify TRIM Status Check in 'System Information → SATA/NVMe' if 'TRIM' is enabled.

If disabled, run:

sudo trimforce enable

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✅ Done! Your macOS VM should now be using the newly expanded disk space.