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Burn ISO to DVD in macos 10.15 Catalina

https://support.apple.com/guide/mac-help/burn-cds-and-dvds-mchl8addfd95/mac says it works on Catalina, but when I select "Burn Disc Image" after selecting the .iso in the Finder, no windows opens, nothing happens at all. The same machine, a MacBook Pro (15-inch, Mid 2012) running Mojave works in exactly the same manner. (The two machines were exact copies of each other, except the amount of RAM, before I upgraded one to Catalina for testing.) The same thing happens on a vanilla install of Catalina on an iMac with a USB burner attached. I can't find anything interesting in the console.log either.


I know optical drives are not very common, but I still work with old computers and booting from USB is not always feasible. If it is planned not to work, then the option should be gone from the Finder.

MacBook Pro 15", macOS 10.15

Posted on Oct 25, 2019 11:19 AM

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Posted on Nov 6, 2019 11:55 AM

If you are not afraid of the command line, you can burn ISO images from there where the Finder fails. For example, to burn the latest Ubuntu ISO, load Terminal.app, and there you would type the command (in bold; the resulting output is below):


hdiutil burn ubuntu-19.10-desktop-amd64.iso


Please insert a disc:

Preparing data for burn

Opening session

Opening track

Writing track

........................................................................................................

Closing track

........................................................................................................

Closing session

........................................................................................................

Finishing burn

Verifying burn…

Verifying

........................................................................................................

Burn completed successfully

........................................................................................................

hdiutil: burn: completed

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Nov 6, 2019 11:55 AM in response to J-Meese

If you are not afraid of the command line, you can burn ISO images from there where the Finder fails. For example, to burn the latest Ubuntu ISO, load Terminal.app, and there you would type the command (in bold; the resulting output is below):


hdiutil burn ubuntu-19.10-desktop-amd64.iso


Please insert a disc:

Preparing data for burn

Opening session

Opening track

Writing track

........................................................................................................

Closing track

........................................................................................................

Closing session

........................................................................................................

Finishing burn

Verifying burn…

Verifying

........................................................................................................

Burn completed successfully

........................................................................................................

hdiutil: burn: completed

Oct 28, 2019 8:24 AM in response to J-Meese

I have noticed an issue as well. I tried to burn a Solaris ISO to DVD and got a message stating the disk image is invalid. This used to work by just right clicking on the image and choosing burn disk image. The weird part is that I could mount it and then burn it, but in reality if you could mount it and burn then you should also be able to burn it without mounting.

Oct 28, 2019 12:15 PM in response to akjeff

Follow this workflow to help assure the best qualty video DVD and save on "coasters":


Once you have the project as you want it save it as a disk image via the File ➙ Save as Disk Image menu option. This will separate the encoding process from the burn process.


To check the encoding mount the disk image, launch DVD Player and play it. If it plays OK with DVD Player the encoding is good.


Then burn to disk with Disk Utility or Toast at the slowest speed available (2x-4x) to assure the best burn quality. Always use top quality media: Verbatim, Maxell or Taiyo Yuden DVD-R are the most recommended in these forums.

Oct 29, 2019 7:10 AM in response to Old Toad

The end product in this case is a bootable data DVD, and the image can be downloaded from the Ubuntu web site, 18.04 LTS x86_64 (I posted a link, but my post was then removed, so you'll have to go get the image yourself.)


If you try to mount it, you can see that it will not mount. On Mojave, you do not need to mount it. You right click on the .iso and then select "Burn Disc Image". It burns correctly, and you can then boot a computer off of it (It will boot the MacBook Pros used in the example, as well as other x86_64 based computers.) Doing this same thing on Catalina does not work. Workarounds exist, such as using Roxio Toast, but the fact remains that this is a bug of Catalina. Burning it as anything other than an image will not produce a bootable DVD. I am not looking for workarounds or other methods. I am looking for this to either 1. Work, or 2. Be removed as no longer supported.

Nov 2, 2019 9:24 AM in response to Ghostkernel

I submitted a bug through feedback assistant. I have noticed Etcher has problems writing flash drives as well. I finally ended up using dd to write to a flash drive.

I would recommend submitted a bug as well through feedback assistant so that it gets more attention at Apple.


You can get to feedback assistant but using the following applefeedback:// in a browser.

Nov 6, 2019 7:56 AM in response to akjeff

I have this exact same issue, and also with attempting to burn Solaris ISOs to cdroms. Yes, you can burn the mounted ISO disk image from the desktop drive icon when it's mounted, but it looks like it copies the files to the cdrom and doesn't make a bootable cdrom from the image.


Before Catalina this approach worked fine, same MPB 2015, same USB cd burner, right clicking the iso file and selecting 'Burn image to' ... on Catalina this option just closes the menu and nothing happens.

Nov 6, 2019 9:05 AM in response to Old Toad

If I can join the thread....... (Im using Catalina 10.15.1 by the way)

I am also trying to burn a Solaris 10 install DVD, I cannot find the option 'save it as a disk image in 'File' menu described by old Toad, or see it anywhere else. That makes no sense.. sorry


Selecting burn the ISO gives the failure message:- Could not burn "sol-10-u11-ga-sparc-dvd.iso". The disk image is invalid.


However An unpacked ISO CAN be displayed then burned with the following procedure: -

Select your ISO image with RHM - Then Right click to 'open with' - select 'Diskmanagemounter.'

This automatically creates a folder containing the Solaris install files (in my case SOL_10_113_sparc)

Now right click on the new folder and select Burn "SOL_10_113_sparc" To Disk (or whatever your folder is called)


Thats it and it works



Nov 6, 2019 9:17 AM in response to akjeff

I can understand your frustration, Oracle instructions make it seem so easy for x86 Intel platforms , however Ive also delved into this and there's a plethora off issues oracle don't tell you unless you pay £790 p/a for support and thats only for platforms specified in their compatibility list. I gave up as Im not clever enough to sort it without assistance.

Nov 6, 2019 1:12 PM in response to tknmncr

I can confirm that this Terminal-based hdiutil burn foo.iso works when a DVDWriter has a mounted DVD on the Desktop. It just finds the drive, and burns the iso. I just booted up the Puppy Linux (bionicpup64-8.0-uefi.iso) Live DVD on a 2007 MacBook running Snow Leopard following this command.


This hdiutil burn command seems a likely candidate for an Automator Quick, or Folder action. The former would be accessible from the secondary Finder panel's Quick Actions menu.

Burn ISO to DVD in macos 10.15 Catalina

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