Query regarding extending C Drive / OS Drive ! :(
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Hello Technical people,
I need a huge help from you guys. I have found few solutions on Internet but I’m quite scared to lose any data.
Here’s the thing: Two years ago I have purchased a disassembled computer and assembled them. I had purchased 1 TB HDD. While assigning the space for each drive at the time of installation of the OS, I mistakenly chose 40GB for C Drive which is very less. Initially I assumed 40GB is too high but later came to know that it is very less.
For installation of the OS itself, it consumed lot of space so I’m unable to install any software. Most of the programs, I have installed on my D Drive which has lot of space but there are few specific software which has to be installed on the OS drive. So I’m not sure how to extend the space in C drive.
I have read several solutions like moving all the data to an External HDD and then re-install the OS which is a huge time consuming. Also, it is a hectic to reinstall the software which I have already installed on D drive. But still, I’m in the process of moving all the Audio, Video and jpeg files to my recently purchased External HDD.
So, please let me know if there is any simple solution to extend the space of C drive without losing the data. Or at least without losing the Programs which I have installed on D drive. I can completely move all the movies and songs to External drive but not these.
Here is the snapshot:
I am not Technically sound, so please explain in English.
Thank you so much.
YAHOO!!!!!!!!!!!!!!!!!!!!
FINALLY THE ISSUE RESOLVED!!!!
Before trying the long procedure provided ad4190, I thought of doing this partition one last time in Easeus and this time it worked like a CHARM!! However, I made little changes this time.
All these days, I was adding the unallocated space to D drive which was After D Drive instead of before it and then adding additional space to C Drive and then applying the changes and restarting the PC. This did not work even after trying multiple times.
This time, I tried ONE STEP at a time!
1. I first added the Unallocated space to D Drive which was after it. Then saved and restarted the computer. It successfully worked!
2. I then unallocated the space from D Drive to make sure it is before this drive and after C Drive. (Thanks to DealSeeker). This also worked! – This takes a lot of time for the changes to take place while restart.
3. Lastly, added the unallocated space to C Drive and then applied the changes and restarted. This too finally worked!
THANKS TO EVERYONE WHO TRIED TO HELP ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Superb! Now we know why the changes were not taking. Would have pointed this out if I knew you were trying to apply such multiple changes, where step 2 depends on step 1, in a single go. Never mind, all’s well that ends well. 
Bravo for being persistent with this! 
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give a shot