Solved Samsung 990Pro 4TB

Windows is telling me in Task Manager and Device Manager that my 4TB is a 2TB drive. Bios reports 4TB and so does HWinfo, Crystal Disk Info,Samsung magician and AIDA64.
Even the formatted capacity is shown as a 4TB disk in TM and DM. So this must be another bug in Windows. Just curious to know if anyone else has seen this.

Hi,
Show what disk management shows
Device manager should show all of it as 4000GB

As shown Device Manager shows 2TB. Disk Management reports 4TB

Initialize the disk as GPT (not as MBR).

@Anibor_11 all disks are GTP You just haven't read my post.

Well the good news is that disk management sees it correctly and you can use the disk drive. Not sure why Device Manager is reading it wrong.....but that shouldn't cause any issues.....it's just odd.

@pparks1 It's not a problem like I said the formatted size is 3.6 TB so it's a 4TB drive. Strange that Device Manager and Task Manager report it as 2TB. Just wondered if anyone else had come across this.

no1yak said:

As shown Device Manager shows 2TB. Disk Management reports 4TB

Click to expand...

Hi,
Yeah if you noticed my 970 os m.2 doesn't show any amount
Only thing that counts is I know what size it is and so does all disk tools like yours do so yes I'm seeing similar win-11 device manager inconsistencies as well.

A more wild thing is
C is the 4tb disk lol

I know 4TB for the C drive is a bit much but I got it for a bargain price. 24000 TBW is not to be sneezed at. It should out live me by quite a few years.
Thanks every one for taking the time to answer.

Device Manager should Definitely not list your drive as the 2TB model when you have the 4TB model.

I have the same exact drive and model myself and this is what Device Manager shows for me:



Have you checked for Firmware updates through Samsung Magician?

The 4TB model should come with Firmware version 0B2QJXG7 out of the box,
but you should let it update to 4B2QJXD7 (if it's not already on that version).

@SuperConker Yes Firmware is 4B2QJXD7

If the drive works like it should (outside of the name in Device Manager) then i suppose it's not really an issue,
just really strange that Device Manager reports the wrong model name lol.

Only other thing i can think of to try, is to update your Motherboard's Intel Chipset drivers.

no1yak said:

I know 4TB for the C drive is a bit much but I got it for a bargain price. 24000 TBW is not to be sneezed at. It should out live me by quite a few years.
Thanks every one for taking the time to answer.

Click to expand...

Hi,
I didn't sneeze but did cough a little hehe seeing you have a 1tb empty same 990 series.

You must have fun system imaging C
My 970 os disk is only 500gb partitioned down to around 250gb for C.

Just an update. Did a repair/install and now Windows shows the 4TB drive,