Everything was said here: Disk Not Ejected Properly -- AGAIN AGAIN … - Apple Community
In my case I'm 100% that this is not a hardware issue. I don't have this problem during 1-2 days after a reboot, but later it comes, and can't use my flash drives and other storages until the next reboot.
MacBook Pro 15″, macOS 15.2
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Disk Not Ejected Properly - definitely a software issue
