Seagate Expansion Portable Drive 4Tb not recognised [SOLVED]

[Phil181]

My brother-in-law purchased a Seagate 4Tb Expansion Drive (unpowered/portable 2 1/2" external HDD).
Plugged in directly to our Q10Pro's, in any USB slots, the drive is not recognised at all by the system.

It is formatted NTFS and it works perfectly fine on two Windows 10 PC's.
I use USB external drives regularly in the side USB 3.0 port of the Q10Pro. 
I tried 3 other external non-powered drives and they all log and work fine (including a Seagate 1Tb).

I connected a USB 3.0 hub that is in regular use with same result (thinking it may be lack of power from the USB ports to the drive). 
The 4Tb drive is simply not recognised (but all others tested are).  I even checked the drive SMART and all is fine.

Has anyone else experienced or heard of this issue with large external Seagate drives?  Is there any other way or technique to get the player to recognise the external drive?  Maybe it is a HDD to avoid.....

[stl]

Maybe you need to reformat it. Read this topic:
http://www.futeko.com/newforum/index.php?topic=576.0

[Phil181]

I reformatted NTFS first.  All files can be read on a PC.  It's not my first hard drive 

[ceaca]

My brother-in-law purchased a Seagate 4Tb Expansion Drive (unpowered/portable 2 1/2" external HDD).
Plugged in directly to our Q10Pro's, in any USB slots, the drive is not recognised at all by the system.

It is formatted NTFS and it works perfectly fine on two Windows 10 PC's.
I use USB external drives regularly in the side USB 3.0 port of the Q10Pro. 
I tried 3 other external non-powered drives and they all log and work fine (including a Seagate 1Tb).

I connected a USB 3.0 hub that is in regular use with same result (thinking it may be lack of power from the USB ports to the drive). 
The 4Tb drive is simply not recognised (but all others tested are).  I even checked the drive SMART and all is fine.

Has anyone else experienced or heard of this issue with large external Seagate drives?  Is there any other way or technique to get the player to recognise the external drive?  Maybe it is a HDD to avoid.....

It's working for me on Himedia Q10 Pro but not on Zappiti  4k HDR  DUO....

[Phil181]

Seagate's SeaTools for Windows gave a FAIL error when fully tested "fix all long".

I managed to solve the HDD issue by fully deleting the partition (using a Windows PC), making a new Simple volume and formatting NTFS default (which it was previously).  I also completed a slow complete NTFS format (which takes many hours to complete on a 4Tb drive compared to Quick Format) to ensure the sectors were all ok.

It is possible that Seagate used their "MBR workaround" format on these large external disks as I have found before with 3Tb external drives. 
It was done gets around the 2Tb limitations of a lot of old hardware that cannot read relatively GPT partitioned drives. 
This includes old PC and TV's with built-in crap media software.

At least the HiMedia can now log and read the drive.  All good