CD/DVD Drive DiskImage.iso path: Could not open, Operation not Permitted

[runwaygoats]

Describe the issue

VM Name: QemuEmulatedDebian.UTM
Used within UTM.app all the time.

VM Backup Name: QemuEmulatedDebianBackup.UTM
Always used as an offline backup and never used within UTM.app to prevent recreation of VM UUID.
When needed, while UTM.app is closed, QemuEmulatedDebian.UTM is deleted and a new QemuEmulatedDebian.UTM is duplicated from QemuEmulatedDebianBackup.UTM

Steps to Reproduce

While UTM.app is closed, duplicate QemuEmulatedDebian.UTM as QemuEmulatedDebianBackup.UTM within Finder.
When something goes wrong with the QemuEmulatedDebian.UTM, quit UTM.app.
Delete QemuEmulatedDebian.UTM
Duplicate QemuEmulatedDebianBackup.UTM as QemuEmulatedDebian.UTM
Open UTM.app
Start QemuEmulatedDebian.UTM

Error

QEMU exited from an error: qemu-x86_64-softmmu: -drive if=none,media=cdrom,id=driveF177DB5E-953E-4CE1-8829-FEA9EC3C4694,file=/Volumes/data/DiskImage.iso,readonly=on: Could not open '/Volumes/data/DiskImage.iso': Operation not permitted

Fix

Edit QemuEmulatedDebian.UTM
Drives > IDE Drive > Path
Even if you see the DiskImage.iso file in Path Box, Browse... and select DiskImage.iso again.
Start QemuEmulatedDebian.UTM

Configuration

• UTM Version: 4.4.0
• macOS Version: 14.0 Beta (23A5328b)
• Mac Chip (Intel, M1, ...): M1

[ernstki]

Thanks @osy. This one bit me too. Wish I'd searched the issue tracker before spending an hour trying to figure this out.

Note that as of this writing, the version in the Mac App Store is 4.4.4, which doesn't include this change.

Also note: although the error message would imply that it was something related to filesystem permissions, fiddling with the "Full Disk Access" security settings in System Settings doesn't do anything for this issue.

[osy]

It was included in v4.4.1 so you're probably hitting another issue. Also FDA doesn't mean anything in a sandboxed app.

[ernstki]

@osy, I was able to work around it using the advice from this discussion, but I'll keep an eye out and if it's something reproducible, I'll collect more information for a proper bug report. Thanks!

Enabling FDA is just something I do out of pure naïveté on macOS when I see permissions-related errors. I'm not proud of it, but that's just the level I'm at sometimes.