Member Avatar for kixxhore

I have sufficient space in Disk D and E. but my Disk space of C drive is getting low, I tried to extend from Disk management ,but could not suceed,can anyone help me with it? I dont wanna reboot it again.

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  • Latest Post Latest Post by caperjack

Dani AI

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Brief, practical note to sit above the thread:

Back everything up first — a full image of the disk is strongly recommended (as emphasized). The usual reason Disk Management cannot extend C is that Windows only extends into unallocated space that is immediately to the right (higher-offset) of the C partition. If D and/or E (or a small recovery partition) sit between C and the free space, the built-in Extend Volume will fail (this is what was pointing at). rightly pointed to offline partition tools for safe moves; ’s question about whether D/E are separate disks is crucial because fixes differ if they are separate physical drives.

Suggested, minimum-risk workflow

  1. Image the whole disk.
  2. Inspect physical partition order (Disk Management or DiskPart) to confirm whether unallocated space is contiguous with C. Use the sequence below to view layout from an elevated command prompt:
diskpart
list disk
select disk 0
list partition
exit
  1. If unallocated space is immediately to the right of C, Extend Volume will work. If not, either move partitions left with an offline partition editor (bootable media), or clone the OS to a larger drive and swap disks. Both methods are non-destructive when done correctly but require booting outside Windows to move the system partition safely.

If a reboot is absolutely impossible, a practical workaround is to free space on C without resizing partitions: move large folders, relocate user folders or program data to D/E and create directory junctions. Example junction command:

mklink /J "C:\Users\Public\Documents" "D:\PublicDocs"

Cautions: avoid converting the system disk to a spanned/dynamic volume for the OS unless fully understood; always verify bootability after changes and run chkdsk.

Recommended Answers

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Member Avatar for twiss

Why don't you want to reboot? How long does that take!?

Member Avatar for kixxhore

Why don't you want to reboot? How long does that take!?[/QUOTE
ya its not a big deal to reboot,but was just wondering if there are any other ideas about it,, anyways thanks....

Member Avatar for twiss

Well, the most reliable way IMHO is to burn a GParted disk, boot that disk, modify your disks, and reboot Windows.

Member Avatar for kixxhore

Thankx for the Words

Member Avatar for hotmatrixx

If your data is valuable to you, BACK THE TRUCK UP FIRST!!!!
back it up.

2nd, gparted "can" move segmants around, successfully. I know it was written by some linux guy, and it is probably rock solid, but I would be more inclined to back up one of my other partitions (I am presuming they are larger than the OS partition) and use something like to a bigger partition.


sure it's a sappy looking website, but the guy writes solid code!


i do like that little tool. it is freeware for this task too.!

just a suggestion, and "no reboot Needed!"

Member Avatar for Shade01

Just remember to extend one partition, you have decrease the size of another partition to make space on the hhd. Then disk management will work.

Member Avatar for caperjack

Just remember to extend one partition, you have decrease the size of another partition to make space on the hhd. Then disk management will work.

and thats the simplest and easiest way to do it, do it all the time with mine ,and no need for third party tools ,that I'm sure work great too.

Member Avatar for caperjack

I have sufficient space in Disk D and E. but my Disk space of C drive is getting low, I tried to extend from Disk management ,but could not suceed,can anyone help me with it? I dont wanna reboot it again.

are d and e separate hard drives or just partitions of C:/

are we to assume that by reboot you mean re-install the operating system ,as in computer terms reboot simply means to shut down the computer and reboot it

Edited by caperjack because: n/a
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