Change boot partition size

badspeler

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I am trying to get my computer set up to dual boot Win 7 and linux (Slackware). My computer says that it's using BIOS, but when I use the "setup" command on the linux install, I get a message saying that computer is set up with EFI. I have chased down all sorts of info on how to deal with this. The last thing I was trying to do was use these instructions to change over to EFI.

In the diskpart procedure, the boot partition example (Primary 1) has 350 MB. My computer has 199 MB and I tried a few different combinations of sizes to get the EFI and msr partitions, but I didn't know what to put and each combo I tried resulted in an error. How do I expand the boot partition on my computer to at least 228 MB? I have gparted software and tried just expanding the boot partition, but the software gave me an error about trying to move the C: drive, which was on the next partition, saying I may damage it. To be clear, I would like to know either the right sizes for EFI and msr ("System") partitions for for my existing partition of 199 MB or some way to enlarge the partition to accommodate the minimum I need for the two partitions.
 

My Computer

Computer type
Laptop
OS
Win 7 64bit

My Computer

Computer type
PC/Desktop
Computer Manufacturer/Model Number
Own build (new) Desk1 / Asus ROG Win 7 / Desk2 1st build
OS
Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
CPU
Desk1 i5 3750K / Laptop i7 GTX 860M / Desk2 i5 2500
Motherboard
Desk1 Asus P877-V / Desk2 Gigabyte H67 UD3H / Laptop ?
Memory
Desk1 8GB (1866) / Desk2 16GB (1333) / Laptop 8Gb DDR3
Graphics Card(s)
Desk 1& 2NVidia GTX 650 & Laptops on board Intel
Sound Card
Desk 1 & 2 -XONAR DG Realtek High Def audio Laptop
Monitor(s) Displays
Desk 1 Benq HD 2450 / Desk2 Philips 24" / Laptop 17.5"
Screen Resolution
1920x1080 D1 & D2 & Laptop 1
Hard Drives
Desk1 Samsung 120GB 830 SSD
Asus ROG 256GB 850 Pro SSD
Desk2 Samsung 840 256 SSD
Toshiba 120GB EVO
PSU
Desk 1 Corsair HX 1050/ Laptop ? / Desk 2 Corsair HX 650
Case
Desk 1 Cooler HAF XM ? Toshiba laptop / Desk2 Coolermaster
Cooling
Fans on all Desk1 -2 Desk2 - all Coolermasters 5 Laptop ?
Keyboard
Desk 1 MS Sidewinder X6 Desk 2 MS Sidewinder X 4
Mouse
Desk 1&2 - Gigabyte MS 900 gamer - laptop - Logitec wireless
Internet Speed
ADSL2+
Other Info
One other Desktop (tester) and spare Toshba laptop both with SSD's
Running Kaspersky 2016 ISS on all machines config'd identically
Logitec audio stereo systems on each machine (x3)
Canon MG5250MFC
Router/modem TP-Link running WPA2SK
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