Not understanding external drive info?

Solution
Data on a new drive is an unusual issue. Was it a refurbished drive? It's also possible that it's showing up that way because it hasn't been formatted yet. Either way, you can simply format the drive to fix that. (I also strongly recommend running chkdsk on any new drive)

As far as the total capacity listed in windows @465gb, that is normal.

1. A gigabyte, as counted on the label by HDD manufacturers, is 1 billion bytes. A gigabyte, as counted by computers, is 2^30, or 1,073,741,824 bytes. 1 label gigabyte will show up as 0.93GB in your OS. 465 is exactly 93% of 500.

2. You will lose a tiny bit more capacity when you format. "Typically, some of an HDD's capacity is unavailable to the user because it is used by the file system and...

mikehende

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Sorry, I don't know what happened in my OP. I just got a new 500gb external drive with data on it, when I open My Computer I am seeing 56.5gb free of 465gb so already the math doesn't add up to 500gb, what gives?
 
Data on a new drive is an unusual issue. Was it a refurbished drive? It's also possible that it's showing up that way because it hasn't been formatted yet. Either way, you can simply format the drive to fix that. (I also strongly recommend running chkdsk on any new drive)

As far as the total capacity listed in windows @465gb, that is normal.

1. A gigabyte, as counted on the label by HDD manufacturers, is 1 billion bytes. A gigabyte, as counted by computers, is 2^30, or 1,073,741,824 bytes. 1 label gigabyte will show up as 0.93GB in your OS. 465 is exactly 93% of 500.

2. You will lose a tiny bit more capacity when you format. "Typically, some of an HDD's capacity is unavailable to the user because it is used by the file system and the computer operating system, and possibly inbuilt redundancy for error correction and recovery."
 
Solution

mikehende

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The drive was bought brand new from Micro Center by the person who put the data on there for me. So if I am understanding this correctly, the missing 35gb are used by the HDD's system so what's actually available is 465gb?
If yes and since it shows 56.5gb "free" of 465gb, this means that the actual data copied onto the drive amounts to 406.5gb?
 


No. There are no "missing" bytes. Read #1 in my post.



That is pretty much correct, 408.5GB to be exact.