increase c drive partition via windows 7 disk manager

October 11, 2012 at 01:38:10
Specs: Windows 7, Dual 2G Ram 2G
My c drive have low space. so i want to increase it, I make some unallocated space on my disk via disk manager in windows 7, but extend volume option does'n highlight for drive C, what should i do? Do anyone khow?
best for you
aminkzee Kashan

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October 11, 2012 at 02:44:47
The unallocated space must be right next to the drive to be expanded. If there is/are another drive/drives in between, then expansion cannot be realized.

What you can do is, delete all other partitions except C: your system drive, making backup copies of the contents before deletion, then make the expansion and create new partitions.

Also make sure you open disk management with elevated privileges.


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October 11, 2012 at 03:33:06
You cannot increase the size of the C: partition because Windows is installed on it.
The only way to increase it is by deleting all partitions and re-installing Windows.

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October 11, 2012 at 03:39:09
As suatcini advises, "free" space must be immediately adjacent (next to) the c: partition itself. Otherwise an ad-in util is likely the answer - various utils suggested in links below?

These may be of interest/help - not the least the first two; and "Petri" is an old hand with most/all of M$-OS...

Have to say I wasn't aware that Win-7 allowed that option; still mostly on XP-Pro! In XP one used an add-in/third-party util to this end.. And even then it was not always advisable... Usually "wiser" to copy all data etc. to external media first! Verify it is OK of course too... (I say copy as opposed to back up as back up really means a code style data copy; that cannot be read - but can be restored to the systems able to read/use it. Copy means it's actual readable data complete in itself and that and can be simply accessed/read by any compatible system/application. The two terms are increasingly confused and the former used when the latter is more appropriate these days; as very few make a true back up in domestic environments?)

Once data etc. is secure off the system, rebuild/reconfigure system with larger partition(s) as required, and re-install OS, apps and then restore data.

Overall a safer way to go?

If you go the win-7 Drive Manager path, or add-in utils - again - first ensure you have first copied all data elsewhere as above; 'cos if "anything" goes wrong/amiss during the win-7 resizing process (or any other method too) then that data will be safe off the system. It can be recovered later as needs-be?

Noting Phil's comment above: I too would advocate a rebuild and so on; although it would appear that win-7 does allow partition resizing on the fly (via Drive Manager)? Even using add-in utils with XP didn't alway work out successfully; depending in part which util one used...; and always it was/is wise to secure data off the system first!

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October 11, 2012 at 04:47:14
What is the total size of your HDD? What are the sizes of your partitions? If your C drive is almost full, it's because you're not using the space properly. Empty your temp folders, delete any files you don't need, uninstall programs you don't use, move files off the C partition to another partition or external drive, etc.

Install & run CCleaner-Slim:

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October 11, 2012 at 23:20:36
It is better to choose 3rd party partition software, since you could not move the unallocate space to the right side of C partition in windows, in my opinion you could use AOMEI Partition Assistant, it could do a better job than windows build in disk management. You can find the software on PCworld:

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November 11, 2013 at 15:41:01
You cannot increase the size of the C: partition because Windows is installed on it.

That is no hindrance to increasing the size of the C: drive. But as others have said, you will need third party software to do it. You can shrink the D: drive from Windows but that will put the empty space at the end of the D: drive. You then need to move the partitions so the empty space is between C: and D:. which Windows can not do. Then you can expand the C: drive.

Bear in mind that this can be a lengthy procedure so put aside a couple of hours at least to do it.

You can also move your Documents folder to drive D: Windows puts it on drive C: by default but it doesn't have to be there. My Documents is a special folder that cannot be moved in the normal way. Right click My Documents > Properties > Location.

Create a folder on Drive D: Called Mt Documents. From Location select find target. Navigate to the new folder then select Move. All you files will then be moved to drive D: and the necessary registry entries will be updated.

That should free up a bit of space.


message edited by StuartS

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November 11, 2013 at 21:09:55
Is there another post to go with this? I am lacking in info. How big is the hard drive. How is it currently partitioned?

To err is human but to really screw things up, you need a computer!

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