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Discussion in 'Mac Basics and Help' started by soamz, Dec 10, 2015.
Im trying to format a SD card 32GB and I get this error.
What to do ?
In Disk Utility try File>Unmount before you format. Seems to have worked for me in the past.
There is no option to unmount.
I only see eject option.
Should be located in the menu bar as shown below.
It appears in the File menu in El Capitan if you have the mounted disk selected.
Ok its done.