What do you want to use the partition for... Just to use for your pics/docs/videos? Prob best to leave 120GB to the operating system and programs, that only leaves about 30GB unless you get rid of the hiberfil.sys and the pagefile.sys
My Computer
At a glance
Win7 Home Premium x64 W10Pro&HomeA12 9720p 4+8 TurionII M5206GB 8GBR7
A 160GB HDD isn't really that big for use with an OS, programs and games. I suppose it depends on which games you're going to be playing. If you can answer that it may help us inform you better.
My Computer
At a glance
W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x6...i7-4790k @ 4GHz (4.4GHz Boost)16GB DDR3 Kingston HyperX Fury @ 1600MHz CL 9...EVGA GTX 980 Classified
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Custom Build
OS
W7 Pro x64 SP1 | W10 Pro IP x64 | W8.1 Pro x64 VM | Linux Mint VM
Gyration wireless, Logitech wireless, Dell USB wired
Mouse
Gyration wireless, Logitech wireless, V7 USB wired
Internet Speed
Spectrum - 100Mbps D / 10Mbps U
Antivirus
Avast, MBAM3, EMET, WinPatrol
Browser
Pale Moon, Firefox, IE
Other Info
2 multi-boot PC's
Mainly HTPC/Office/Gen purpose (no gaming).
Trendnet USB KVM.
LG DVD burner/Blue Ray Player.
Tray system for removable SATA backup drives.
Not currently OCd, under-volted.
I use Hybrid sleep, rarely re-boot or shutdown.
Hauppauge HD-PVR, Avermedia PCIe TV Tuner, Hauppauge PCI TV Tuner.
I know of no good reason to partition a a drive that small.
Put Windows 7 and your games on the drive with out a separate partition. Their is room for everything or their isn't.
If their isn't room for everything you need a bigger drive or another drive added. Their is not magic space gained or speed gained by using more partitions on the same drive.
My Computer
At a glance
Windows 10 Pro. 64/ version 1709 Windows 7 Pr...Intel i7-6800K @ 4.3Corsair Platinum 16 gig @2400EVGA GTX 1070 OC
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Home made Desktop
OS
Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
CPU
Intel i7-6800K @ 4.3
Motherboard
ASUS X-99 Deluxe II
Memory
Corsair Platinum 16 gig @2400
Graphics Card(s)
EVGA GTX 1070 OC
Monitor(s) Displays
Asus 27" LED LCD/VE278Q
Screen Resolution
1920-1080 or 1280-720 HDMI
Hard Drives
INTEL SSD 730-240 Gb Sata 3.0/
PSU
EVGA Platium 1200W
Case
Phanteks Luxe Tempered Glass 8 fans/ one radiator
Cooling
XSPC/ Water Cooled CPU
Keyboard
Das 4 Professional
Mouse
Logitech M705/MX Anywhere 2-S
Internet Speed
100 mbits
Antivirus
Microsoft Security Essentials/ Malwarebytes Premium 3.0/ SAS
Browser
I.E. 11 default/Firefox/ ISP Time Warner Cable/Spectrum
Other Info
LG BluRay Burner/
Sound system-KLipsch-THX/
Icy Dock ssd Hot Swap bays.
Just leave it as it is. Extending the C partition will be a big deal for you. Right now you still have ample free space on the C partition. Just make sure you do not move any additional big files on C. Normal programs is OK because they are generally small. But no videos or large picture files.
My Computer
At a glance
Vista, Windows7, Mint Mate, Zorin, Windows 8from 1.6GHz Duo to i7
Computer Manufacturer/Model Number
HP, Dell, Gateway, Toshiba - 4 laptops and 2 desktops