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levmc

macrumors 6502a
Original poster
Jan 18, 2019
687
25
On my Mac:
Capacity: 17.86 GB
Used: 15.83 GB
Available: 2.03 GB

On my Windows (exact same files)
Capacity: 16.6 GB
Used: 14.7 GB
Free: 1.88 GB

Which is correct?
 
The definition of 'gigabyte' is a bit of a mess. Windows defines a gigabyte as 1024 x 1024 x 1024 byes (1,073,741,824), whereas MacOS defines it as 1,000,000,000 bytes. Both sides have reasonable arguments for their definitions.
 
Which definition of GB does Google Drive use when they have 15 gb limit?
 
The definition of "gigabyte" has actually resulted in several lawsuits in the past. I remember getting an e-mail that I was part of a class-action settlement against a disk drive maker many years ago.


But it is still really confusing. Looking at the listing of a large file in Windows Explorer, it shows the size as 3,134,654 KB but when you look at the file properties it says 2.98 GB (3,209,885,048 bytes). I am running Windows under Parallels, and in the Finder it shows a size of 3.21 GB while "Get Info" shows 3.21 GB (3,209,885,048 bytes).

Take your pick. At least the actual size of 3,209,885,048 bytes is consistent. :)
 
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I want to know if I have to use Windows or Mac way of counting if I don't want to go over 15 gb on Google Drive when uploading a folder that is a little under 15 GB.
 
Try it with less than 15GB of data.

I suggest putting 10GB of your data on the Google Drive, then do the Get Info (or Windows equivalent) on the Google Drive. Write down all the numbers exactly. Compare those numbers with the same 10GB folder on both Mac and Windows. Whichever one is closer is likely the same as how Google counts space.

I say "closer" because the numbers may not match exactly. There's a thing called "metadata" that can affect how data is counted. I don't know what metadata Goole Drive keeps, so if it drops any or adds its own, then that will change the numbers slightly.
 
Which definition of GB does Google Drive use when they have 15 gb limit?
According to this Quora answer Google Drive uses Gibibytes (the bigger ones). I can't confirm that, but Google Cloud does use Gibibytes and does call them "Binary Gigabytes (GB)" which matches what the answerer is saying.
 
I tested uploading some files from Mac and it seems like Google Drive is using Windows version of GB.

(When I uploaded 14.6 gb from Mac, it comes out to be 13.6 gb in Google Drive.)
 
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