Here is the solution that we did;
1. The "disk quorum" which is offline -> we remove it from the "Failed Cluster Manager"-Storage-Disks- Disk quorum- right click remove
2. In my case : the disk is "Disk 1"
PowerShell command:
Clear-ClusterDiskReservation –Disk
Source: http://technet.microsoft.com/en-us/library/ee461016.aspx
In my case : Clear-ClusterDiskReservation –Disk 1
Then, resize the harddisk by making it online -> right click-> extend
Finish -> then right click -> offline the hardisk
3. Then add back the disk (Add Disk) to the cluster storage;
4. Then configure cluster quorum settings -> use default quorum configuration setting.