2nd SATA Hard Drive not shown on my computer [Solved/Closed]

Ask a question shawn - Last answered on Mar 27, 2017 at 06:59 AM by the passerby

I have had a WD 160GB SATA hard drive as my primary HD and I recently bought a Seagate 80GB SATA hard drive to use as a secondary storage space. I connected all the power, SATA cables correctly and when I boot my comp, it shows on the display that my WD 160GB is the primary and Seagate 80GB is the slave. However, when I go on to my comptuer, I don't see the new hard drive. When I check the device manager, it still indicates that it recognizes both of my hard drives. Why is it not showing up on my computer to be used?
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You need to format the drive before you can use it for data.

Right-Click on the My Computer icon either on your desktop or in the Start Menu and select Manage.

A new window titled Computer Management comes up.
Select Storage from the left hand side by clicking it once, then select Disk Management(local) from the right side by double-clicking it. Find your new drive and format it with one large partition.

First you partition - do a primary partition if you want only one partition on the hard drive. Then you format the partition - again right click and select format use NTFS - use default allocation size and give the new volume a label (no spaces allowed in the name).
DN- Aug 12, 2010 at 04:26 PM
Ya, thanks man.
Computer guy- Oct 7, 2012 at 02:37 AM
Thank you so much!
jason- Oct 9, 2012 at 01:12 PM
thank you!!!!!!!
the passerby- Mar 27, 2017 at 06:59 AM
Thanks a bunch.
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First you partition - do a primary partition if you want only one partition on the hard drive. Then you format the partition - again right click and select format use NTFS - use default allocation size and give the new volume a label (no spaces allowed in the name).
marsty5- Jan 2, 2009 at 06:47 AM
I have the same problem. But I can't format on the right-click. The option is not available. What can I do?
Marsun- Oct 7, 2009 at 05:34 PM
I am having the same problem, I do not get the "format" option with the right click. Did you find a solution?
Ryan- Apr 27, 2010 at 06:23 PM
its not format.. its partition
James A- May 8, 2010 at 10:34 AM
Thanks for that, I was trying to work it out for HOURS, you have saved my sanity!!!
ANX- Oct 7, 2012 at 09:59 PM
One more thanks
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dear friend

type diskmgmt.msc in your run command...ull find 80gb as unallocated ...just you need to do is make the partation of the harddiskand u can use it as a secondary
deaniepops- Jun 25, 2010 at 01:15 PM
your a legend cheers my hard disk works now..
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I have noticed a few people saying that they dont want to Format the slave drive so what to do?
But have not seen a reply.
I am in the same boat & can see the slave in disk manager as local disk but only option is to format it in actions etc
I dont want to do that as only need to get the data from it.
Can anybody provide a solution, pleeze
Someone did say set to cable select, I tried that also & it did not work
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the same problem is mine..
but I dont wanna format it..
because there are lots of stuff in it..
mine hard disk is 250GB...
it doesn't get detected on my Pc..
help me..
mail me at vs4vijay-[at]
its urgent....
NicoQB- Feb 1, 2009 at 07:43 AM
Had the same prob.
Using Acronis Disk Director , I simply had to reassign a drive letter to my hard disk partition, it will be detected by My Computer, with all data accessible too!
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I just purchased a second internal hard drive and my BIOS will not recognize it nor will 'my computer' recognize it.
I am stumped as to how to get this going.

Any suggestions?

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I didn't Have to ask a question. Someone else already did that. One of the answers solved my problem of installing a second SATA HDD and it not showing as a lettered drive.
Thanks everyone for your diligence and your willingness to share with others.
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This the full instruction with picture guide from SEAGATE hope this might help.
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Ecxellent peice of advice, I just bought a 1TB Hitachi HDD, and googles for an asnwer on how to make it visible to my computer, really good solid advice found - thanks
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I searched everywhere and everything I saw regarding installing a second sata hd on xp, dealt with installing raid. Finally became smart and reworded my google search "installing second sata hard drive without raid" and this was the first link that google came up with. Worked perfectly. Thank you very much.
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Scarytutor- Dec 25, 2008 at 12:07 AM

All good advice, but when installing a extra drive it will not show up in windows.
my advice is to follow the link and download the software on the site of the harddrive manufactuer;
Such as this link to Western Digital drives site, this will show the drive and format also (may work for other drives)
I have vista and had to set up the install programme in compatibility= right click on install programme / select properties / compatibility / tick box -- run this program in compatibility mode -- I chose win 2000 then applied . start install program etc.

Hope this helps some.
Watson- Dec 29, 2008 at 08:15 AM
I also have a problem with a WD 1TB SATA drive. However mine isn't even being detected when I go into Windows, when I disable in the BIOS, my PC boots. But its when its enabled, I get an error - auto-sensing slave hard disk drive, strike F1 to continue or F2 to change settings.

I am going to try and install Windows on this drive, but I fear it may be gubbed :(
NickNYC 15Posts Saturday February 14, 2009Registration date February 17, 2009 Last seen - Feb 16, 2009 at 07:26 PM
still having problems?
Loopa Scarytutor - Feb 20, 2009 at 08:06 AM
I bought a western digital internal HD 1TB, I put it in my computer, and it would show up in Computer managment >storage > disk managment

But it wouldnt show up in My Computer.

i downloaded Data LifeGuard from the western digital website but I have vista so it didnt work very well, but I followed these tips and everything worked thanks so much

Right click and properties>compatibility.

after I used this programe it seemed to have worked straight away. I perviously used Computer managment to format the new internal HD but that did nothing.

this programe did the trick> but that was for my model

so use the other part of the link to find what you might need or perhaps there is some other software you can use if you have a different brand. try their website perhaps.

thanks a lot to the person who posted this!
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Also extremely Helpful :)
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Thanks this helped me alot too
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I have a pretty similar problem too. I just installed my 3rd HDD (disk 1) and it won't show up, but I know it's there, since it's listed in Disk Management. And click on it, I can't change the partition from unallocated to primary. Neither can I format it. The only one I can format is my programs drive. The listing is like so:

Disk 0 (win7 programs - can be formatted) - primary

Disk 1 - (drive that needs to be formatted) - unallocated

Disk 2 (storage drive - can't be formatted) - primary

So, is there a way to bump 0 and 2 out of the way so I can format disk 0? Or another way to format disk 1? The only options that are click-able when I right click on disk 1 are New Simple Volume, Properties, and Help.
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Failure to recognize 2 drives at the same timeI apologize for the inconvenience. This is a signature conflict problem. For Windows XP (all data on the problem disk will be lost!):

1) Open Computer Management -> Disk Management

2) If the offending disk doesn't show up in Disk Management, select

"Actions", "Re-scan" and wait a minute or two or three

3) Note the disk number of the disk that won't mount, e.g., #5

4) Start a command line session

5) Type "diskpart" (Microsoft's disk partition program)

6) Type "select disk 5" (makes disk 5 the focus)

7) Type "clean" (removes existing disk partition)

8) Type "create partition" (creates a default partition)

9) Type "assign letter=h" (assigns a drive letter to the "new" disk)

10) Note in Disk Management that disk 5 is now listed as "Un-initialized" and


11) Reboot the machine

12) The Disk Initialization Wizard will start

13) Take the defaults to finish the wizard

14) Disk should now be ready to use along with the other disk of the same


15) It may be necessary to adjust the security settings for this disk, e.g.

if you want "Everyone" to have "Full" access to files. folders, and


For Windows 7:

1) Open Computer Management -> Disk Management

2) Note that the disk that won't mount, disk 5 for example, is listed as


3) Right click on the blue "Offline" text and select "Online"

4) Should now be ready to use
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i have a 160 gb WD hard disk which is working fine.Recently, I bought a 160 gb seagate hard disk.I t showed up in the bios as I had put it in the SATA 5 port.But when I go to my computer AND disk management AND device manager it would not show up!there are already files in there(windows XP is also installed in there)What should I do?
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I had the same problem and solved it this way.

Try going into the control panel: Administrative Tools: Computer Management:Storage: Disk Management:

From here you can partition and format your new drive any way you want from here.
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Quick (dumb) question, but I want to be sure. Found this thread which seems to answer my problem nicely. HOWEVER, how exactly do I format the disk from "Disc management"? Right now there is only the option to "Partition" is this what I want to do, and if so, it asks "primary" or "extended". Which do I want to do. It is for a 2nd HDD which does not contain OS if that matters.

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Nearly all the hard drives u get from the retail stores need being partitioned and formatted before use. In addition, if you make two partitions, but format one of them, the other "part" of the hard drive will not show up in "my computer", or even if you format it but does not assign a drive letter, it wont show up there either.

just in case, if any of you guys miss one of the above, dont worry, dont scream. ur hard drive is just fine.
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when I am trying to load windows in my sata hard drive I am not be able to it was not showing my system
xpcman 17249Posts Wednesday October 8, 2008Registration date ContributorStatus March 18, 2017 Last seen - Feb 7, 2009 at 07:03 PM
This is a problem with XP and the fact that it does not have SATA drivers. Google for solutions about "slipstreaming" the drivers.
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