This may be related to my post here: viewtopic.php?f=11&t=4365 but since I'm not sure, I'm opening a new thread.
This is an RPI 3B with a 2TB external USB drive that has previously worked with DietPi.
When in the Drive_manager, I am unable to unmount my drive. User data, swapfile and RootFS are not on this drive.
Trying to unmount gives a string of text that I can't read at the bottom, then back to the Drive_manager screen as if nothing happened.
This makes format and "Check & Repair," options that I can't use.
What'd I do wrong here?
Why can't I Unmount my USB HDD?
Re: Why can't I Unmount my USB HDD?
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# mount
Then try sudo umount that /dev device or the /media
if that doesn't work...try
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# sync