GUID Partition Table (GPT) whitepaper

Look up the GPT Disk Properties
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3. Look up the GPT Disk Properties
You can go to Disk Management > Right click on Boot Volume > Property > Hardware
tab > Double click on the disk > Volumes tab > Click Populate
It displays GPT with capacity 28***** MB. (Reserved space = 200 MB)
Figure 30 GPT Disk Properties
NOTE: Disable “EFI Optimized Boot” and “Use Legacy Video for EFI OS” in BIOS configuration
after installation will cause the OS fail to boot up.