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Windows 7: Extracting RAR archives results in different extracted file sizes

1 Week Ago   #11
Snick

Win 10 x64, Linux Lite, Win 7 x64, BlackArch, & Kali
 
 

Windows, you can't exceed MAX_PATH value (259 characters for files, 248 for folders)


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6 Days Ago   #12
cgh98

Windows 7 Ultimate x64
 
 

Okay so I tested this using a different archive (because it's the smallest one and took a lot less time to extract) from the same drive with the other archives stored and extracted them to the other drive I'm using. I've attached screenshots showing the sizes of each extracted folder from both my Windows laptop and Mac. It's bizarre to me to see but I extracted the same archive using the 3 different programs (Bandizip, 7Zip, WinRAR) and got different results from each. What does anyone make of this? The 4th properties/info pane is of the same archive that I extracted a few days ago with WinRAR and as you can see it even shows a different size than the WinRAR extraction I did last night.

Also as you can see the size of each is the same when viewing info pane on Mac but like before each folder shows a different size and file/folder count when viewing properties on Windows.


Attached Thumbnails
Extracting RAR archives results in different extracted file sizes-untitled1.png   Extracting RAR archives results in different extracted file sizes-screen-shot-2019-10-12-12.15.34-pm.jpg  
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3 Days Ago   #13
cornemuse

Windows 7 Home Premium bit
 
 

I am curious, onve extracted, do the (contents) function properly?
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3 Days Ago   #14
Snick

Win 10 x64, Linux Lite, Win 7 x64, BlackArch, & Kali
 
 

You are comparing to files on two different Operating Systems, if you check the files on the same system, open with the same program, they should be the same, the hashes should be identical
What Are MD5, SHA-1, and SHA-256 Hashes, and How Do I ...

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2 Days Ago   #15
cgh98

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by cornemuse View Post
I am curious, onve extracted, do the (contents) function properly?
Yes, everything so far seems to view and function properly that is within the folders.

Quote   Quote: Originally Posted by Snick View Post
You are comparing to files on two different Operating Systems, if you check the files on the same system, open with the same program, they should be the same, the hashes should be identical
What Are MD5, SHA-1, and SHA-256 Hashes, and How Do I ...

Yes that's my issue...take macOS out of the equation. When comparing the folders extracted they are different file sizes in Windows. This has occurred when extracting the same archive twice with WinRAR and they are different sizes. Also when I extracted the same archive via 3 different unarchivers as you can see in the last post, they are all three different sizes.
My System SpecsSystem Spec
2 Days Ago   #16
F22 Simpilot

Windows 7 Ultimate x64
 
 

In 7Zip it should calculate a CRC for each file. You can use the program HashCalc and compare that CRC32 and see if the files match up.



SlavaSoft HashCalc - Hash, CRC, and HMAC Calculator


Attached Thumbnails
Extracting RAR archives results in different extracted file sizes-1.jpg  
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2 Days Ago   #17
Snick

Win 10 x64, Linux Lite, Win 7 x64, BlackArch, & Kali
 
 

cgh98,
You are playing games with the compression algorithms.
Any time you compress data, you are utilizing a compression algorithm. 7zip, WinRar, WinZip, PeaZip, etc., they all utilize their own proprietary algorithm.
How File Compression Works

Why is this so important?
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1 Day Ago   #18
cgh98

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Snick View Post
cgh98,
You are playing games with the compression algorithms.
Any time you compress data, you are utilizing a compression algorithm. 7zip, WinRar, WinZip, PeaZip, etc., they all utilize their own proprietary algorithm.
How File Compression Works

Why is this so important?
I mean honestly I'm just concerned that all the files that were originally archived aren't going to be there. Still no reason I can find as to why extracting the same archive using the same program (WinRAR) and extracting it to the same drive; produces different results/different sizes.
My System SpecsSystem Spec
15 Hours Ago   #19
Snick

Win 10 x64, Linux Lite, Win 7 x64, BlackArch, & Kali
 
 

The same zipped archive
you extract it to say the desktop?
then you extract it to the desktop again?
and compare them right?
and they are different right?
how are you comparing them?
both there extracted, at the same time? right?
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 Extracting RAR archives results in different extracted file sizes




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