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Possibly format a troublesome USB drive via Terminal
Authored by: cjcj01 on Jun 08, '09 01:20:40AM

Out of interest, if you're formatting in HFS+ on a USB drive on an Intel Mac, and you don't want to boot from the USB drive, you'll want to change the partition map to AFP not GUID. This saves you around 200Mb of space on an 8Gb usb flash drive.

e.g. on my 8Gb Flash drive:
It's 7.5 GB when viewed in Disk Utility. But when I format it with GUID only 7.2Gb is available. When it's formatted AFP I get 7.4Gb.

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