Many times people asked me how to extend a disk or I see them running Gpart or CLI tools while it’s not necessary. For those people I decided to write this blogpost.
Step 1 : Extend your disk in VMware settings
Go to you vCenter server and extend the disk. Simply go to the server you wish to edit, choose edit settings and click on the hard drive you wish to extend. Make sure you select the right drive! 
Now just fill in the amount of disk space you want for this drive. In mine example (I took this picture after resizing the disk) it was 30 GB and I added 20 Gb so the total is 50 Gb of storage.
Step 2 : Check your drive and extend it
Before I extended the drive it was 30 Gb, check this picture :
Now we are going to extend this drive. Go to server manager/storage.
Click rescan disks, because Windows doesn’t see the extra available space right yet. After the rescan you must see extra unallocated space. Now select the volume (partition) you wish the extend. See below :
Just go through these simple steps :
Et voila, the disk is extended :
