You can use the hdiutil command in Terminal to convert the file: hdiutil convert /path/to/Lion_Installer.dmg -format UDTO -o /path/to/Lion_Installer.iso (Note: This creates a .cdr file, which you can simply rename to .iso) .
balenaEtcher can be used to flash the image to a USB drive. EduGeek.net +2 System Requirements To run macOS Lion, your Mac must meet these minimum specifications: Apple Support Processor: Intel Core 2 Duo, i3, i5, i7, or Xeon. Memory: At least 2GB of RAM. Storage: 7GB of available disk space. Existing OS: Must be running Mac OS X 10.6.6 or later. Apple Support +1 Note: macOS Lion is considered "End of Life" and no longer receives security updates from Apple. For security, it is recommended to use the most recent version of macOS your hardware can support. Carnegie Mellon University Would you like instructions on how to
Instead of hunting for an ISO:
Use third-party tools like TransMac or AnyBurn to open the DMG and export its contents or convert it to a standard ISO format. Creating a Bootable USB Installer
Most ISO files labeled as “macOS Lion” are created by users who took the official Lion Installer.app (last released in 2011) and converted it to ISO format using third-party tools. Lion originally came on a USB stick or as a downloadable installer from the Mac App Store, not as an ISO.
This creates a universally compatible ISO file, often referred to as a "bootable disc image," which can be mounted in virtualization software.
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You can use the hdiutil command in Terminal to convert the file: hdiutil convert /path/to/Lion_Installer.dmg -format UDTO -o /path/to/Lion_Installer.iso (Note: This creates a .cdr file, which you can simply rename to .iso) .
balenaEtcher can be used to flash the image to a USB drive. EduGeek.net +2 System Requirements To run macOS Lion, your Mac must meet these minimum specifications: Apple Support Processor: Intel Core 2 Duo, i3, i5, i7, or Xeon. Memory: At least 2GB of RAM. Storage: 7GB of available disk space. Existing OS: Must be running Mac OS X 10.6.6 or later. Apple Support +1 Note: macOS Lion is considered "End of Life" and no longer receives security updates from Apple. For security, it is recommended to use the most recent version of macOS your hardware can support. Carnegie Mellon University Would you like instructions on how to
Instead of hunting for an ISO:
Use third-party tools like TransMac or AnyBurn to open the DMG and export its contents or convert it to a standard ISO format. Creating a Bootable USB Installer
Most ISO files labeled as “macOS Lion” are created by users who took the official Lion Installer.app (last released in 2011) and converted it to ISO format using third-party tools. Lion originally came on a USB stick or as a downloadable installer from the Mac App Store, not as an ISO.
This creates a universally compatible ISO file, often referred to as a "bootable disc image," which can be mounted in virtualization software.
