Hello Michael,

maybe the tape drive has lost the inventory of the tape. Each time a tape is 
loaded, the drive reads some information from the tape (EOT and other 
information) and is updating this information when unloaded the tape. If 
something is going wrong with rewind and writing the data to tape (power loss 
or mechanical problems during rewind), this information can't be updated. Maybe 
this is causing this tape alert. Probably the drive will need some time the 
next mount of this tape because it has to read the tape first. For this 
information is somewhat ancient, I'm not shure if this is still matching for 
current tape technologies with MICs (chips in the tape cartridge) like LTO but 
I would expect that at least the MIC has to be updated in the same manner. 

Kind regards,
chs

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