http://www.ghacks.net/2016/08/08/10-ways-to-free-up-hard-drive-space-on-windows/

https://www.microsoft.com/en-us/itpro/windows-10/release-information

• Direct upgrade is easiest, but fresh install is best
• USB install is much faster than DVD install
• USB flash drive needs to be at least 8GB
• Windows 10 will automatically activate if the machine was previously activated with Windows 10

https://www.microsoft.com/en-us/software-download/windows10

• Upgrade the PC you are working on now
• Download ISO file
• Create USB flash drive
• Use this if you haven't already obtained the Windows installation ISO file

https://rufus.ie/

If you already have the Windows ISO, you can use Rufus with these settings:

1. Device option
   • Select the USB flash drive you want to use
2. Boot selection
   • Click Select
   • Browse to and select your 32-bit or 64-bit Windows 10 ISO file
3. Image option
   • Select Standard Windows installation
4. Partition scheme
   • MBR
5. Target system
   • BIOS or UEFI-CSM
6. Volume label
   • Any valid name
7. File system
   • NTFS
8. Cluster size
   • Default value (4096 bytes)
9. Select Quick format
10. Select Create extended label and icon files
11. Click on Start

This will also get rid of hiberfil.sys:

powercfg -h off

http://www.makeuseof.com/tag/save-disk-space-compact-os-windows-10/

http://www.intowindows.com/how-to-compress-windows-10-installation-files-folders/

Current status:

compact /compactos:query

Compress Windows 10 OS:

compact /compactos:always

Disable the Security Center to get rid of notifications like Turn on Windows Security Center service:

Steps to turn off security center manually:

1. Open service.msc
2. Stop Security Center service and set it to disabled
3. Go to C:\Windows\System32
4. Take ownership of files ActionCenter.dll and ActionCenterCPL.dll
5. Get full access for the files “ActionCenter.dll” and ActionCenterCPL.dll
6. Rename the files ActionCenter.dll and ActionCenterCPL.dll to ActionCenter.dll.bak and ActionCenterCPL.dll.bak

sc config wscsvc start= disabled
reg add "HKCU\Software\Policies\Microsoft\Windows\Explorer" /v "DisableNotificationCenter" /t REG_DWORD /d "1" /f
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Notifications\Settings" /v "NOC_GLOBAL_SETTING_TOASTS_ENABLED" /t REG_DWORD /d "0" /f

Windows 10 won't play DVDs by default.

The simplest DVD player may be here:

https://www.codecguide.com/download_k-lite_codec_pack_standard.htm

Choose Standard or above so you get the Media Player Classic which you will use to play DVDs.

You will probably have to set Media Player Classic as the default app for DVD autoplay using Control Panel (not Settings).