Member Avatar for rotten69

Hi,
I have a mac book pro. I'd like to know how to burn dmg files onto DVD-R as bootable on Windows 7?
Do I also need to convert the files to ISO type in order to make them run smoothly when I start up the machine?

Thanks...

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Short, practical clarification based on the thread: a DMG’s ability to boot an Intel Mac depends on how that DMG was built (partition map and filesystem), so burning it from Windows is often unreliable. is correct that some DMGs are bootable and some are not; ’s point about extracting a DMG on Windows is useful for getting at files, but extraction alone does not guarantee a bootable installer.

Most reliable approaches (in order of reliability)

  • Prepare a bootable USB/DVD on a Mac using Apple’s installer tools or Disk Utility — that preserves the GUID partition map and HFS+/APFS layout the Mac expects.
  • Use the Mac’s Internet Recovery (if the model supports it) to reinstall without local media.
  • If only Windows is available, sector‑by‑sector/written‑raw tools exist that can sometimes write a Mac‑format image, but success is hit‑or‑miss because many Windows burners create ISO‑9660/MBR discs that Macs won’t boot.

Practical checks and troubleshooting

  • After creating media, hold the Option (Alt) key at boot to open Startup Manager and select the installer.
  • If the installer doesn’t see the internal drive, the drive will usually need to be erased and formatted with a GUID Partition Table and Mac OS Extended (Journaled) (or APFS on newer installers) before installation.
  • Always back up any important Windows data first — the installation process will typically require erasing the disk.

Summary
For a trustworthy clean install of Lion, preparing the installer on a real Mac (or using Apple’s recovery options) is the least error‑prone route. Windows-only workarounds can work for file retrieval or experimentation but are fragile for a full OS install.

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Member Avatar for CimmerianX

A DMG file when burned to a disk, may or may not be bootable depending on the DMG.

You can burn a dmg to disk. Here's how:
http://lifehacker.com/251758/mac-tip--how-to-burn-an-iso-or-dmg-file-to-disc


To burn a dmg file to disk within windows, I've read you can use 3rd party apps like TransMac. I've never seen any native windows program that would do this. IF I'm wrong, someone jump in here.

In the MAC, you can convert the DMG to an ISO. The Windows PC can certainly work with that format.
"hdiutil convert image.dmg -format UDTO -o image.iso"

commented: This user gives sound suggestions on Mac issues. +1
Member Avatar for rotten69

Thanks for the reply. Well, that's the dilemma I'm having at the
moment. Do I need to convert the dmg files to ISO if I want to
install the lion os x on my MacBook pro considering that it doesn't have any OS except Win7?

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