How do I mount an ISO file on macOS Sonoma

I've been provided an ISO file. It is not a program, it will mount a converted Blu-ray Disc. This was never a problem in the past but now, no ISO files are mounting.

MacBook Pro 16″, macOS 14.5

Posted on Jul 15, 2024 8:35 AM

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Jul 15, 2024 10:32 AM in response to Luis Sequeira1

Before Sonoma, all of them did.


I have over 100GB of ISO files of my Blu-Ray and DVD Audio discs from the past 7-8 years and suddenly last year after upgrading to Sonoma, most of them will not mount. They say (and I'm generalizing) "no content" despite the fact I created, used, and backed up the ISO files on this very Mac (2019 16" MBP). If these had been created on a Windows PC I wouldn't even bother asking, but it was all done using this machine. Most of my more recent ones won't mount, and when they won't, it's always with that same error message.


So I'm trying to find out what's inconsistent. They are all ISO, nothing custom.


(SACDs are expensive, upwards of $35-50 per album (multiply that $$ amount x number of discs). This was a back up solution I've managed for years and I've created a large library. Now most of these discs appear useless.)


Thanks.

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Jul 15, 2024 11:13 AM in response to Robert Looper1

Thank you for the detailed information.

I have no similar images to test. I am thinking that maybe it’s not that they are iso files but the specific format - but again this just a hunch, since I have no way to test.


One possible workaround, uncomfortable as it may be: install an older OS, either in a separate drive or in another APFS container in your internal drive and see if the images mount correctly there. At least this will ensure that the iso files are ok and provide you a way of accessing them.

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How do I mount an ISO file on macOS Sonoma

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