If the device contains any files you want to save copy them to another storage device or volume.
Lock usb drive mac.
When you see your removable disk in the left panel right click it and select encrypt from the contextual menu.
Encrypt and protect a storage device with a password in disk utility on mac.
Connect the usb flash drive to your mac and find its disk icon on the desktop or finder sidebar then right click and select encrypt usb stick name from the context menu.
Insert your usb drive into the mac and open a finder window.
Set up usb lock on pc or mac rohos key logon is a software that can program a usb flash drive a mobile phone or even a bluetooth device to act as the key to unlock your system.
In the disk utility app on your mac choose view show all devices.
In the sidebar select the storage device you want to.
The best part about this application is that it s available for both windows and macos devices.
On said site they ll find the oddly named rohos logon key which is a new the os x version at least downloadable application that turns the usb drive into a key that can lock a mac up tighter.
Fortunately mac os x provides a few native solutions to help you protect your data on external hard drives.
Encrypt external hard drive on mac.
In the filevault window you can set a password by typing it in twice as well as set a password hint.