HDD not being scanned despite being mounted

[Eulipian]

On April 15 you stated:

@kingosticks

NTFS is best if you are mostly using it with Windows (faster than FAT32 and no size limits). It is supported under Linux to varying degrees, reading is generally fine.

Your response here says:

@kingosticks

Neither ntfs or exfat (puzzled why this unpopular format has been making a recent comeback) are support out of the box in the latest release.

Based on your earlier reply I reformatted to NTFS. From your responses I now understand you to say that ONLY ext4 will work with an external powered USB HDD. Is this correct?

As to why exFAT is being used please refer to this thread on reddit:

https://www.reddit.com/r/raspberry_pi/comments/3jnyti/what_format_should_i_use_for_my_pis_hard_drive_it/

My conclusion so far is that external HDD will ONLY work if powered and formatted as ext4. Please confirm.

Thanks