Large 4Tb harddisks disappear after update windows 10

[thedudenl]

Hi,

I updated my win 7 today. I had 2 working large 4Tb disks for data storage, but after the update they were only there for a short while. When I tried to access them, the system started freezing up and then I received a number of mv91xx errors in my eventviewer. The disks disappeared from the explorer at that point. I had this problem in windows 7 before, and it turned out that just removing mv91xx did the trick, its a Marvell driver I don't even need in the first place, so i renamed the sys file in windows 10 too.

But now the disks won't come back after rebooting, although they are still there when I boot my backup SSD with win 7 on it.

Does anyone know how i can make these disks visible again in win 10?

Thanks!

 

[Ironsounds]

Hello... You need to fix any Device /Driver problem in Device manger first with either OS...
You should disable any MB Hardware in the MB BIO's, if not needed, and then Windows OS will never see it or report a problem with it.
Do you have multi partitions on the 4TB's?

You could also Restore the problem OS with a "previous restore point" before the Update changed things... and will be as it was before.
"if not broken... don't try and FIX IT" attitude needs to be had with dealing with UPDATES.

 

[mbarnes86]

Hi

I assume your motherboard has more than one hard disk controller
One is marvel
Are your disks connected to main intel or AMD hard disk controller or marvel controller?

If connected to marvel controller the driver has to be loaded

You may need a win 10 compatible device driver for marvel chip
Or connect hdd to main hdd controller

Regards
Mike barnes

 

[thedudenl]

Well my previous version before the windows 10 update of today was windows 7.
Before updating I made a disk image on an identical SSD, I can boot with that now and still see the large disks in my system, so I don't think I would have to change anything in the BIOS?

In windows 10 I can not find any evidence of the disks even being there, at least not in the disk manager.

In my windows 7 they are disk0 and disk1, formatted as large 4Tb partitions with 1 driveletter each using GPT

 

[Ironsounds]

Hello... You need to give Permission to an OS to be seen and used... Does Windows Disk management see them? Do you need to "mark partition as Active" ?

 

[thedudenl]

Hi guys, thanks a lot for the help, I deleted the Marvell driver from the device manager and windows 10 detected it again and installed the correct driver now.

Regards,

Marcel