
How could I without plugging in drive A: or the real drive E: find out which E: drive (now A:) in the NTFS tab can be deleted? And when I remove the E: drive (formerly A:) in the tab will the index of the original, existing drive E: be kept?


Yes, if you remove the 4th index the other indexes will be kept, even if they are offline.If I remove this index the other E: index (another drive) should be kept, shouldn't it?
It is possible the volume GUID changed with the drive letter change.Why is the non existing E: (which has chaned to A:) kept although it is not available anymore? Could one avoid it?
Yes, it is set like that, I haven't changed anything:The auto_remove_moved_ntfs_volumes ini setting should be set to 1 to automatically remove moved NTFS volumes
