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Windows 7: windows won't see more than 2 hard drives but my bios can see them

25 Oct 2015   #1
Everettdiver

Windows 7 ultimate x64
 
 
windows won't see more than 2 hard drives but my bios can see them

Just built a computer and and I am running windows 7 ultimate 64x and I have 4 hard drives plugged in and it sees them all in the bios but in windows it will only let me see 2 and sometimes it switches which hard drive it sees as the second hard drive. Am I missing something or does anyone know how to fix this. I need more storage space.


My System SpecsSystem Spec
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25 Oct 2015   #2
DavidOdden

Win7-64 pro; XP
 
 

When you look at the disks in Disk Management, are the missing ones marked as Offline?
My System SpecsSystem Spec
25 Oct 2015   #3
Everettdiver

Windows 7 ultimate x64
 
 

It doesn't show them at all... it just shows the 2drives
My System SpecsSystem Spec
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25 Oct 2015   #4
Brds7t7

Windows 7 Pro 64-Bit, Windows 7 Ultimate 64-Bit, Windows 8.1 Pro 64-Bit
 
 

Quote   Quote: Originally Posted by Everettdiver View Post
It doesn't show them at all... it just shows the 2drives
What size are the hard drives? Over 2TB?
How old is your pc? Can you see them in device manager?
My System SpecsSystem Spec
25 Oct 2015   #5
Everettdiver

Windows 7 ultimate x64
 
 

I just built the pc and new components ... I have a 1tb sshd for os and a 4tb sshd , 2tb, 1tb for storage
My System SpecsSystem Spec
25 Oct 2015   #6
Brds7t7

Windows 7 Pro 64-Bit, Windows 7 Ultimate 64-Bit, Windows 8.1 Pro 64-Bit
 
 

Quote   Quote: Originally Posted by Everettdiver View Post
I just built the pc and new components ... I have a 1tb sshd for os and a 4tb sshd , 2tb, 1tb for storage
Which ones aren't showing up? If they're not showing in disk manager at all then it could be your bios isn't set correctly.
Have you tried opening a command prompt > diskpart > list disk
Do they show up at all in diskpart?
My System SpecsSystem Spec
25 Oct 2015   #7
Brds7t7

Windows 7 Pro 64-Bit, Windows 7 Ultimate 64-Bit, Windows 8.1 Pro 64-Bit
 
 

Also, you can try the free boot disk for minitool partition wizard Best Free Partition Manager for Windows | MiniTool Partition Free
You might be able to boot into that and initialise the drives.
My System SpecsSystem Spec
27 Oct 2015   #8
alphanumeric

Windows 10 Education 64 bit
 
 

Check device manager for any devices with a yellow ! or red X. Are the two MIA drives on a different make SATA controller or RAID controller? Might just be a driver issue.
My System SpecsSystem Spec
27 Oct 2015   #9
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Complete this tutorial by Golden so these good folk trying to help you can have a look see.

Disk Management - Post a Screen Capture Image
My System SpecsSystem Spec
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 windows won't see more than 2 hard drives but my bios can see them




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