Os X Base System.dmg

Posted October 10, 2007 by David Kirk in Apple Mac

Pic 1 - OS X Base System is the only disk available. Pic 2 - When I press the + sign nothing happens. Pic 3 - Cannot reinstall High Sierra as the only disk available is OS X Base System, that is locked.

Installing OS X from a DMG file can be difficult. With leopard testing and development, many people are having troubles installing from the supplied binary. Here is how it can be accomplished.

After the 'OS X Base System' has been copied onto the USB device, go ahead and eject the BaseSystem.dmg drive. Ejecting is a good idea because there are now two volumes named 'OS X Base System' and we don't need the one in BaseSystem.dmg anymore. Open the USB drive's volume (which has been automatically renamed to 'OS X Base System'). After the extension is removed, restart Mozilla Firefox by closing it from the red 'X' in the top right corner and start it again. Step 3: Scan for and remove Basesystem.dmg Virus files from your Mac When you are facing problems on your Mac as a result of unwanted scripts and programs such as Basesystem.dmg Virus, the recommended way of.


Installing OS X from a dmg file format instead of a DVD/CD format seems challenging. Here is how it can be accomplished.

1. Burn it to Dual Layer DVD

OS X is too large to fit on a single layer DVD; however, many macbooks support burning dual layer DVDs. The media is expensive, but for many people this is the easiest option.

Burn it and reboot to it. The OS X will install.

2. Restore the dmg file to an external device

An external hard drive or an iPod in hard disk mode will serve as an excellent booting device as well.

– Copy your dmg file to your current apple desktop.
– In the Utilities Folder in your Applications Folder select Disk Utility
– Select your external device in the left column of the utility
– Click the Restore button
– Drag your dmg to your Source textbox
– Drag your device from the left column to the Destination textbox
– Click the Restore

You will lose any information you have in your external device in this process. After the dmg is restored to the external device, change your boot disk to this device and reboot.

Dragging the source and destination files can be a little confusing. Click the picture below for a larger version.


About David Kirk

Os x base system mac
David Kirk is one of the original founders of tech-recipes and is currently serving as editor-in-chief. Not only has he been crafting tutorials for over ten years, but in his other life he also enjoys taking care of critically ill patients as an ICU physician.
View more articles by David Kirk

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