Hello,
For the first issue of Duplicating the partitions, follow this steps:
Right-click on 'This PC', then select 'Manage'. In the Computer Management window, click on 'Disk Management' under 'Storage' There you can check the partitions and for each check Drive Letter assignments.
Also try to to unplug the device, reboot, and plug the device after in order to refresh the storage details.
For the second issue of displaying some folders, please try the next:
Try resetting the folder view settings for the affected drive. Right click on a folder on the drive, choose 'Properties', go to the 'Customize' tab, and click the 'Restore Defaults' button. Do this for folders at both the 'This PC' level and one level higher.
Hope this resolves your Query !!
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