![osx sierra external hard drive read only osx sierra external hard drive read only](https://eclecticlightdotcom.files.wordpress.com/2020/09/bootdiskstructurecatalina.jpg)
#Osx sierra external hard drive read only for mac
Note that M3 BitLocker Loader for Mac setup requires macOS High Sierra 10.13 and later version. The first step is to click "Free Download" button to download "m3bitlockerloader.pkg" from our official site.
![osx sierra external hard drive read only osx sierra external hard drive read only](https://www.lacie.com/files/www-content/support-content/knowledge-base/images/DiskUtilityMultiVolume.png)
Step 1: Download M3 BitLocker Loader for Mac.
#Osx sierra external hard drive read only how to
![osx sierra external hard drive read only osx sierra external hard drive read only](https://i.ytimg.com/vi/GVa-6RqGCK0/maxresdefault.jpg)
To secure the data on my USB, I have enabled BitLocker encryption on my USB drive. I am a cross-platform user, I am sometimes required to use Windows but my choice is Mac.