Advanced Mac users may wish to convert a MacOS Installer application into an ISO file. Typically the resulting installer ISO files are used for installing macOS into virtual machines like VMWare or VirtualBox, but they can also be used to burn the ISO to media to create a boot disk. This offers an alternative to creating a bootable USB flash drive for MacOS installers as well.
If you intend on using the ISO file for a virtual machine, you simply need to select the Mojave.iso disk image in the virtual machine app as a boot disk, or mount it within the VM as any other disk image would be. You can also convert ISO files to VDI VirtualBox images if needed.
ISO files are flexible and widely used, they can also be burned to create boot disks and to other media, and you can also copy the ISO to a USB drive with dd or perform any other multitude of actions.
Whether or not creating a macOS installer ISO file and using that ISO is easier than simply using a bootable USB flash drive is entirely a matter of use cases, and in some situations an ISO is the only usable format (ie for certain virtualization scenarios).
Too much work, I fancy. You can create an image, partition it and put a filesystem in it, in the right image format, all in one step:hdiutil create -size 10g -type UDTO -layout SPUD -fs JHFS+ /Desktop/something.cdr && open /Desktop/something.cdr
You can create a disk image that includes the data and free space on a physical disk or connected device, such as a USB device. For example, if a USB device or volume is 80 GB with 10 GB of data, the disk image will be 80 GB in size and include data and free space. You can then restore that disk image to another volume.
You can then burn the ISO if needed, or just use it as a mounted disc image as needed. Ejecting the ISO is done by selecting the mounted image and dragging it to the trash, or by hitting Command + E keys with the ISO selected in the Finder of Mac OS X.
But recently it seems to me that Disk Utility has been purposely crippled on my Mojave Mac.I can create a cdr image from a CD and it is not only unmountable by Finder but Disk Utility says it is unreadable when I try to open it!! This is nuts! Disk utility just created the image file and then tells me it cant read it! WTF!!
i need some help. im installing a copy of reason 5, ive mounted with disk utility, dragged the icon to my apps folder, it asked for a serial so i ran a keygen.exe on a different pc to get the code. entered the code and then it keeps asking for the reason 5 disk, i cant get any further than that. ive installed this file on several other pc.s and had no problems. id imagin its cross compatible or esle it wouldnt even recognise it.
I have an .nrg file on a removable disk which contains Mac native software. I believe the file is Nero, which is not Mac compatible. I found out that I needed to convert it to an .iso file. I used two different utilities to do that but when I double click on the new file/s, my Mac says it is an unrecognised format. Everything I read suggests that Macs can read ISO files with no problem but that is not my experience. Any ideas
any thoughts on what is going on here the software on the disc is supposed to be Windows/Mac compatible and, as i mentioned, i have been running the program from images mounted on my XP machine for quite some time now.
My own little tool, ApplePi-Baker, originally intended for Raspberry Pi disk images, can assist in this as well.Obviously you will need to download and install ApplePi-Baker first, and after that follow these steps:
When using Disk Utility you will have to keep in mind that Apple uses the extension CDR for ISO images. In the end CDR and ISO files are the same, they just have a different extension. Renaming a CDR file to ISO afterwards will fix that.
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This was tested using an iMac (21.5-inch, Mid 2011) 2.5 GHz Intel Core i5 with MacOS High Sierra 10.13.6 installed. The flash drive needs to be at least 8 GB in size. The Snow Leopard ISO file was the same as discussed in this answer, which should be the same ISO you have linked to in your question.
Note: This flashdrive will be using the Apple Partition Map scheme. This differs from the flash drive created using the Disk Utility, which used the Master Boot Record scheme. In other words, there is more than one way to create a USB flash drive installer from a Snow Leopard ISO file.
Enter the commands given below to create the USB flash drive installer. Here, an assumption is made that the ISO file name is snow leopard install.iso and the file resides in your Downloads folder. Also, an assumption is made that the identifier is disk2. If necessary, make the appropriate substitutions.
Enter the command given below to create the USB flash drive installer. Here, an assumption is made that the ISO file name is snow leopard install.iso and the file resides in your Downloads folder. If necessary, make the appropriate substitutions.
Note: Any version of Windows compatible with Balena Etcher should make an appropriate substitution for Windows 10. User John Mark Harrell has also posted an answer verifying macOS Big Sur can be substituted.
I couldn't find a method that worked as Disk Utility doesn't cooperate with OS 10.6 .dmg or .iso files, the instructions above might work on older versions of macOS, but I couldn't get it to work on Big Sur. But then I discovered that the same method I've been using to create bootable linux thumb drives works with the 10.6 .iso AND .dmg (depending on which one you have), and it's way easier and works on any operating system (mac/windows/linux).
Be sure to use a standard installation DVD .dmg or .iso, some of these are copied from the \"grey\" disk, which means they're attached to a specific machine and won't allow you to install even though you can still boot into it successfully.
As another user noted, the Balena Etcher method works great on a Mac. On my 2021 MacBook Pro (with M1 Pro chip), I created a bootable OS X Snow Leopard USB drive using a .DMG of Snow Leopard I downloaded on the internet. And then installed Snow Leopard on a 2009 MacBook Pro without a hiccup.
In present day, VMware is one of the leading providers in virtualization technologies. Hardware virtualization allows you to run virtual machines with various operating systems including Windows, Linux, and FreeBSD on different hosts, while providing you with the ability to migrate VMs between hosts. In some cases you may be required to install Mac OS on a virtual machine, for example, if you need to test applications that can only be run on Mac OS. By default, Mac OS cannot be installed on VMware ESXi or VMware Workstation. This blog post explores the ways of running Mac OS on a VMware ESXi VM.
Once the downloading process has begun, you should be able to see the progress of the download in the Launchpad. Downloading the installation package of macOS Sierra may be a time-consuming process (the slow downloading of macOS Sierra is a common issue). Sometimes, temporary changing the DNS settings in your network configuration may help you to increase the download speed. Attempt using 184.108.40.206, 220.127.116.11, 18.104.22.168 or 22.214.171.124 DNS servers on your machine. If this method does not increase the download speed, left click the Downloading icon to pause your download. Then left click the icon once more to resume the download. After resuming the download of a file, the download speed increases for the appropriate period of time.
In this example, hdiutil is used to create the ISO image. Hdiutil is a built-in console utility that is available on macOS; it is used to work with disk images as data containers that emulate disks. The DiskImages framework is used by hdiutil to manipulate the disk images. 1e1e36bf2d