On a multiboot system - Win 8, Win 7, Ubuntu, Linux Mint part of my HD lost

errolgreer

Reputable
May 14, 2015
3
0
4,510
I have posted this before, but now added info.
I have a multi-boot system, Win8.1, Win 7, Linux etc. I had a partition with Win 10 preview installed. I use Easybcd 2.2 to control booting. After removing Win 10 from Easybcd, that partition no longer appeared in Disk Management, the drive panel leaves a space to the right where that partition used to appear, although the Bios shows the full size of that HD, I can no longer use that part of the HD and have effectively lost that part of my HD, - about 20GB. When I boot into Linux Mint, that old 20GB partition appears on the list, but if I try to mount it, Mint says it has a bad Windows corrupted system on it, so cannot be mounted. I really would like to get that space back, but cannot find any help via Google for this problem. If I do a Restart it now takes 15 MINUTES to boot into any of my Windows partitions, but if I do a Shutdown, cut the power to the motherboard, it then boots normally. There is no problem booting into a Linux partition on that same drive. The Win boot loader is in Win 8.1 x32bit on that problem drive. The active boot loader is on the Win 8.1 x32bit partition.

Just to clarify, there are two HD's. a 1TB and a 500GB. Sometimes the Disk 0 and Disk 1 labels get changed in order in Disk Management, so the problem drive is the 500GB one. This has 2 Linux partitions from Linux Mint. The 1TB drive has 3 partitions from Ubuntu. That's just the way they set themselves up when I installed them. The 1TB drive has no problems. I had the Win 10 pre on the 500GB drive. I created that partition by shrinking the Win 8.1 x32 partition to give me some unused space into which I installed Win 10. That is the partition which disappeared after I removed the link to it in Easybcd. I think I should have first deleted that partition via Disk Management and THEN removed it from Easybcd?? I tried to get Easybcd to look for Win 10, but it only found the Win 8.1 x32bit system.
 
Solution
I would try running an elevated command prompt window from Windows 7 or 8 (right click, run as admin) and use diskpart commands to see if you can find the problem partition and deleted it. Be very careful that you select exactly the correct partition or you may delete something you want and it will be gone.

diskpart
list disk
select disk n (the disk with the problem partition)
list partition
select partition m (the problem partition)
delete partition

That should make the space unallocated and you should then be able to add it to an adjacent Windows partition by extending into it with disk management or an adjacent Linux partition through Mint.

You will find a very good syntax reference for diskpart at...

RealBeast

Titan
Moderator
I would try running an elevated command prompt window from Windows 7 or 8 (right click, run as admin) and use diskpart commands to see if you can find the problem partition and deleted it. Be very careful that you select exactly the correct partition or you may delete something you want and it will be gone.

diskpart
list disk
select disk n (the disk with the problem partition)
list partition
select partition m (the problem partition)
delete partition

That should make the space unallocated and you should then be able to add it to an adjacent Windows partition by extending into it with disk management or an adjacent Linux partition through Mint.

You will find a very good syntax reference for diskpart at https://technet.microsoft.com/en-us/library/cc770877%28v=ws.10%29.aspx
 
Solution

errolgreer

Reputable
May 14, 2015
3
0
4,510
I ran diskpart and it showed the same partitions which Disk Management also sees. These partitions are, respectively Win 7 Pro x32, Linux, and Win 8.1 x32. I use all of these, so I cannot delete any of them. The space to the right of Win 8.1 x32 in Disk Manager is a blank space. That is where the partition about 17 to 20 GB used to appear in Dik Manager. I have screen digital pics from both diskpart and Disk Management, if I can send them to you somehow.