Archive for August 28th, 2011
Mac DMG images are practically unusable in a non-Mac system in that format. They can be converted to ISO images in Ubuntu for easy burning, mounting, or use in a virtual machine.
Once you have the DMG file you want to convert to an ISO file, you need to install dmg2img
sudo apt-get install dmg2img
Now, assuming the DMG file you want to convert is image.dmg, run the following command:
After a few minutes or processing, your DMG will be converted to an IMG file in ISO format (image.img). If you need the ISO extension, simply rename the file:
mv image.img image.iso
Note: IMG files created by Nero are NOT in ISO format and cannot simply be renamed. If you want to convert a Nero IMG file to ISO, use the ubuntu utility nrg2iso, but it’s not required above.
Note that screensaver preferences are a per-user setting, meaning each user has their own settings. If you’re experiencing issues with the screensaver (lack of OpenGL acceleration, system hanging, etc) you’ll want to disable them for each user account.
Open System > Preferences > Screensaver (see the screenshot below)
Uncheck “Activate screensaver when computer is idle” then click Close.
Changes take effect immediately.