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.
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.