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Full featured bootable Mac OS 10.7.5 on USB flash drive?

Is it possible to get a full featured bootable 10.7.5 onto a USB flash drive? I'm can only seem to get it working with the OS installer, disk utility, Safari, and limited access to other features.

Posted on Feb 2, 2013 10:48 AM

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17 replies

Feb 2, 2013 11:09 AM in response to Rich Hall

Did you prep the flash drive first?


Drive Preparation


1. Open Disk Utility in your Utilities folder.


2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.


3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.


4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.


5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.


6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.


Now, run the installer application. Click on the Install button. Click on the option to select another disk. Select the flash drive as the target and click on the Install button.

Feb 2, 2013 2:53 PM in response to Csound1

I have a complete ML install on a 32G thumb drive, it works but is very slow in use.

Even with a flash drive rated with a high read/write speed, they are much slower than any hard drive. I can't think of any reason I would want to boot to one. If I do need a travel OS to boot to, I'd much rather lug an external hard drive that has both USB and FireWire ports.

Full featured bootable Mac OS 10.7.5 on USB flash drive?

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