With three different partition maps available, which one should you use when you format or partition a hard drive? Requires OS X Intel-based Macs can mount and use a drive formatted with the Apple Partition Map, but cannot boot from the device.
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PowerPC-based Macs can both mount and use a drive formatted with the Apple Partition Map, and can also use it as a startup device. Can also be used for devices that require DOS or Windows compatible file formats. One example is a memory card used by a digital camera.
Changing the partition scheme requires reformatting the drive. All data on the drive will be lost in the process. Be sure and have a recent backup available so you can restore your data if needed.
In the list of devices, select the hard drive or device whose partition scheme you wish to change. Be sure to select the device and not any of the underlying partitions that may be listed. Please note: This is the volume scheme, not the partition scheme. This drop-down menu is used to select the number of volumes partitions you want to create on the drive.
Even if the currently displayed volume scheme is the same as what you wish to use, you must still make a selection from the drop-down menu.
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Hope this helps! John John 1, 1 1 gold badge 4 4 silver badges 2 2 bronze badges. Oh my! Thanks John.
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It seems so easy now, i've been wracking my brain trying to solve this, it was so simple I feel stupid. I'm sharing this in other forums where people are having the same issue. I hope that's ok. Thanks so much.
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