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Windows 7 Disk Management

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August 31, 2010 3:58:43 PM

I own an HP Pavilion Elite m9250f which came with two 500 GB HDDs in a RAID configuration. It was a 64-bit Vista system which is now running Windows 7. I successfully replaced the two HDDs with 1TB HDDs. Intel Rapid Storage Technology, which runs the RAID, recognizes the size of the drives. But if I look in Windows Disk Management, the drive size shown there (and in My Computer) is 500 GB. "Disk Management" does show the drive size accurately in the lower end of the Disk Management graphic, where it lists the characteristics of each drive. Is it problematic that the listing at the top of Disk Management shows just 500 GB (w/ 28 GB free), as opposed to the actual 500+ GB free?
a b G Storage
August 31, 2010 7:31:23 PM

I could not understand your query completely.. It'll be helpful if you could post a screenshot.. Till now i can only guess that only 500GB out of 1TB is partitioned and the rest is unpartitioned space..
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a b $ Windows 7
a c 342 G Storage
August 31, 2010 9:09:47 PM

I'd bet Emperus is right, and OP does not quite understand the Disk Management display.

I suspect what happened when the pair of 500 GB HDD's was replaced with a pair of 1,000 GB HDD's, the process created on the new drives Partitions of the SAME SIZE as the original drives were. From the description, I'm guessing this is a RAID1 array.

So, here's what I THINK Disk Management is showing. In the UPPER RIGHT pane of Disk Management you are seeing ONE hard drive of capacity 500 GB. You will see the same ting in My Computer, except that there you also will see the Free Space. (Disk Management does not show "Free Space" or use that term.) Back in Disk Management in the LOWER RIGHT pane there should be TWO rectangles representing the two 1 TB HDD units. Don't forget that this pane SCROLLS so you can see all its contents. For EACH of those two HDD units I expect you will see a small label box on the left end. Then to its right will be a block about half the size of the whole space, showing that it contains a 500 GB Partition used as part of a RAID1 array. To the right of that on EACH HDD rectangle should be an additional block called Unallocated Space. THAT is the area of your HDD that has NOT been used to create a Partition. It is empty. ONE way to use that on EACH of those HDD's is to RIGHT-click on the Unallocated Space and choose to Create a Partition and Format it, using all the available space and the NTFS File System. This will create two new separate "drives" that you can use individually, with their own letter names like "E:" and "F:". However, that does not change the size of your C: drive, which is really the RAID1 array.

IF what you really want is to have ALL of each HDD unit used for the RAID1 array so that your C: drive has 500 GB more of Free Space, what you need to do is Expand your RAID1 array to add in the Unallocated Space on each HDD unit in the array. I believe that, IF you were dealing with a single HDD (not RAID), Vista might let you do that. BUT I do not know how to do it for a RAID1 array. For starters, look carefully through the manual for your RAID system. It may be a separate text document on the CD that came with your mobo or system. Look for any instructions on Expanding a RAID1 volume to add Unallocated Space on its constituent hard drives.
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September 7, 2010 1:34:45 PM

Hi, I actually already extended the drive. In Disk Management, in the top section where drives are shown, the capacity of C: is shown as 455 GB with 49 GB available. But under Disk 0 below, (which is C), the full size of the 1TB disk is shown. If I look on My Computer, the smaller size is shown there as well. In RAID, the full 1TB shows there as well. I did "span" after installation so the full size of both 1 TB disks is allocated to c:. I'm just wondering if the two places where an incorrect size is shown means anything... Do not know how to put a screen shot here. (Prt Scn & Paste? Let me know-- thx)

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September 9, 2010 9:56:46 AM

jmbcomms said:
I own an HP Pavilion Elite m9250f which came with two 500 GB HDDs in a RAID configuration. It was a 64-bit Vista system which is now running Windows 7. I successfully replaced the two HDDs with 1TB HDDs. Intel Rapid Storage Technology, which runs the RAID, recognizes the size of the drives. But if I look in Windows Disk Management, the drive size shown there (and in My Computer) is 500 GB. "Disk Management" does show the drive size accurately in the lower end of the Disk Management graphic, where it lists the characteristics of each drive. Is it problematic that the listing at the top of Disk Management shows just 500 GB (w/ 28 GB free), as opposed to the actual 500+ GB free?



Yes, as Disk Management shows just 500 GB (w/ 28 GB free), the limitation is 500 GB (w/ 28 GB free).The actual 500+ GB has already contained files.
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September 16, 2010 12:56:29 AM

lihuahellen said:
Yes, as Disk Management shows just 500 GB (w/ 28 GB free), the limitation is 500 GB (w/ 28 GB free).The actual 500+ GB has already contained files.


Do you mean that what is shown is false [it is] and meaningless, since it reflects a limitation inherent in the system? PC is working fine...
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