I would look at the drive from within Disk Utility, there you can see a better view of your drive. You often will find there are other volumes besides the active volume OS-X/macOS is running from. As an example here's my 2012 MacBook Pro's drive
[image|2706619]
[image|2706618]
In my case I have a GUID/APFS volume you likely have a GUID/HFS+ volume.
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=== Update (07/27/2022) ===
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High Sierra won't report the Intel graphics engine only the discrete GPU!
The drives size is better to be looked at within Disk Utility, there you can see a better view of your drive. You often will find there are other volumes besides the active volume OS-X/macOS is running from. As an example here's my 2012 MacBook Pro's drive
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I would look at the drive from within Disk Utility, there you can see a better view of your drive. You often will find there are other volumes besides the active volume OS-X/macOS is running from. As an example here's my 2012 MacBook Pro's drive
[image|2706619]
[image|2706618]
In my case I have a GUID/APFS volume you likely have a GUID/HFS+ volume.
The drives size is better to be looked at within Disk Utility, there you can see a better view of your drive. You often will find there are other volumes besides the active volume OS-X/macOS is running from. As an example here's my 2012 MacBook Pro's drive
[image|2706619]
[image|2706618]
In my case I have a GUID/APFS volume you likely have a GUID/HFS+ volume.