Someone swapping their drives from NTFS to EXT4 would at least eliminate or confirm the issue is related to NTFS; if the problem goes away it's something in the in-kernel filesystem driver. If it occurs with EXT4 then it's something else.
i did this . . . all ok. drive appeared and was able to write to it. still need some help on getting old files on new drive so if someone can suggest something for post #36, i would appreciate it.