How do I get extend Partition C ? Option grayed out

Hamlet said:

Hi.

I am trying to extend Partition C using the unallocated space.
When I right click on C, the "Extend Volume" shows grayed out.
When I right click on D, the "Extend Voume" shows available.

How do I do get that option available to extend C ?

Bonus question: how do I do to get completely rid off D? I do not need it, but I am afraid that if I delete it then I will have problems booting up my PC

Thanks in advanced!

You won't be able to extend the C: Partition to the left using the windows built in disk management. Only to the right.

If you want to extend to the left you will need to use a 3rd party Partition tool. Minitool partition wizard free will do the job. Best Free Partition Manager for Windows | MiniTool Partition Free

I would advise taking a full backup/system image before moving the Windows partition. And have a 7 system repair disc on hand too. Also disable system restore before moving the partition. You can enable this again afterwards. When the windows partition moves to the left, the old system restore points will point to the old partition and won't work.