i have three partitions on my computer which are
- C - 80GB
- D - 166GB
- F - 204GB
I need to increase the C: as to transfer the F partition capacity to C:. Can that be possible and how without rebooting.
It's not possible without rebooting, as C: likely contains your operating system (Windows).
Assuming F is empty (or mainly empty), i.e. you can't shrink partitions if they contain data, I'm assuming that 3 partitions are in the same order as the letters, i.e. C: is the first partition, and F: is the last.
So you need to boot (via a CD) into a partition editor to do it, the tool you use might have a wizard to do this, but they didn't when I last did this.
The manual steps are:
Steps 1-3 can be very time consuming if the disk is heavily used and near capacity. I would recommend running a full defrag on each drive before starting.
An alternative approach: find a usb disk of 500gb or more. Move contents of D: and F: to it, then you can delete D:, F: partitions and resize C: and then recreate.