Part of a flash drive not detected on Mac but not on Win 7 computer

manyelski

macrumors regular
Original poster
Sep 3, 2014
132
3
I have the awkward issue with a flash drive - it is divided into different clusters and I do not see the main one (3 GB) on the windows computers only the Mgel one as a CD drive and the 200 MB one. How could I make all into one, and see them on both Mac and Win? I apply screenshot.
 

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hwojtek

macrumors 65816
Jan 26, 2008
1,133
236
Poznan, Poland
Click "View" button on the top left to display the physical storage devices (now your Disk Utility displays logical volumes only). Once you see the physical device, select it and click "Partition" button.
 

manyelski

macrumors regular
Original poster
Sep 3, 2014
132
3
Partition is greyed out on all of them even after doing all this
 

hwojtek

macrumors 65816
Jan 26, 2008
1,133
236
Poznan, Poland
You need to select the physical device (the hardware flash drive) and not any of the existing partitions on this flash drive, because you want to re-partition the flash drive.

How about selecting the flash drive (not the partitions) and "Erase"?
 
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