• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Could someone explain the storage discrepancies on my external HD?

Joined
Feb 11, 2007
Messages
288 (0.07/day)
Likes
21
Location
Emilia Romagna, Italy
Processor AMD Ryzen 5 1600
Motherboard Asus ROG Strix B350-F Gaming
Cooling AMD Wraith Spire, Thermaltake iFlash12 x2, Enermax TB Apolish 12cm Blue
Memory G-Skill Ripjaws V, 2400MHz, 15-15-15-35, 2 x 8GB (F4-2400C15D-16GVR)
Video Card(s) XFX RX580 8Gb Black Edition
Storage Samsung 850 Evo 250Gb, Western Digital WD10EAVS 1Tb, LG GH24NSD1 DVD-RW
Display(s) Viewsonic XG2401
Case Enermax Staray (Blue)
Audio Device(s) Onboard
Power Supply Corsair HX750
Mouse Razer Deathadder Chroma
Keyboard Microsoft 3000 v2.0
Software Windows 10 Home 64bit
#1
I'm trying to work out what is the problem with my Western Digital 1000Gb external harddisk.

I was running out of space and since I was storing some data for a friend I therefore off loaded it onto my friend's computer. The size of this data was in the region of about 10Gb.

I then went and checked the space on my HD and things just didn't match up, never mind the fact that I took off 10Gb of data and there was NOT 10Gb of space left.


First pic below shows the properties after right clicking on the drive icon. What I don't understand is, is where is the 69Gb but it also says that I only have 34.9Mb left.





This second pic show the capacity after going into the drive, highlighting all files and again bringing up the properties. Here it tells me I am using 911/907Gb.




So, I don't understand how all these numbers add up, because they don't. Why am I getting what seems to be random values?
What am I missing, what can I do?

Thanks,
Tom.
 
Joined
Nov 18, 2006
Messages
2,964 (0.73/day)
Likes
397
Location
your local vending machine
System Name HTPC||Lenovo IBM ThinkPad
Processor AMD Phenom II x4 965 stock 3.4GHz||Intel C2D T9300 @ 2.5GHz
Motherboard Zotac 890GX-ITX WiFi||Lenovo 8918CTO
Cooling Stock 3x 120's||Stock stuff
Memory 8GB (2x4GB) DDR3 6-6-6-15||3GB DDR2
Video Card(s) Asus 3870x2||nVidia Quadro NVS 140M
Storage 1TB Seagate Barracuda, 1x 2TB WD EARX ||Hitachi 160GB 7200RPM
Display(s) Samsung T260HD||
Case SilverStone Grandia GD05||
Audio Device(s) on-board||on-board
Power Supply Cooler Master 450W||6-cell
Software Windows 7 Pro x64||Windows 7 Pro x64/Linux Mint x64
#2
The first image shows the total size of the drive, which is correct.
The reason 69GB is missing is due to the way Windows counts bits (1000 vs 1024). I can't remember which is which, but I think Windows uses the 1000 bits = 1KBits instead of 1024 bits = 1KBits.
The second (inside the drive on main directory), you highlighted all the folders inside correct?
If so, it only shows the size of all the files/folders and the size on the disk it takes up. Why they are different, I'm not too sure.
 

temp02

New Member
Joined
Mar 18, 2009
Messages
493 (0.15/day)
Likes
165
#3
It is a older convention that HDD space is measured in powers of 10 instead of powers of 2 (1TB on an HDD is 1000GB and not 1024GB).
To be honest, your hard drive has 202MB more than it should :p, but seriously everything is fine with your disc.
As for the "missing space" it could be on a hidden partition, recycle bin files, or just the Master File Table, thing is without inspecting the drives binary content thoroughly it's hard to guess where it's wasted.

EDIT: Oh, I just remembered something, the System Restore backup files sometimes eat up a lot (and I really mean a lot) of space, turn it off for this drive (since I'm guessing this is not the OS drive), right-click on "My Computer" -> "Properties" -> "System Restore" and uncheck that HDD. Good luck.
 
Last edited:

FordGT90Concept

"I go fast!1!11!1!"
Joined
Oct 13, 2008
Messages
21,062 (6.22/day)
Likes
10,186
Location
IA, USA
System Name BY-2015
Processor Intel Core i7-6700K (4 x 4.00 GHz) w/ HT and Turbo on
Motherboard MSI Z170A GAMING M7
Cooling Scythe Kotetsu
Memory 2 x Kingston HyperX DDR4-2133 8 GiB
Video Card(s) PowerColor PCS+ 390 8 GiB DVI + HDMI
Storage Crucial MX300 275 GB, Seagate 6 TB 7200 RPM
Display(s) Samsung SyncMaster T240 24" LCD (1920x1200 HDMI) + Samsung SyncMaster 906BW 19" LCD (1440x900 DVI)
Case Coolermaster HAF 932 w/ USB 3.0 5.25" bay
Audio Device(s) Realtek Onboard, Micca OriGen+
Power Supply Enermax Platimax 850w
Mouse SteelSeries Sensei RAW
Keyboard Tesoro Excalibur
Software Windows 10 Pro 64-bit
Benchmark Scores Faster than the tortoise; slower than the hare.
#4
First pic below shows the properties after right clicking on the drive icon. What I don't understand is, is where is the 69Gb but it also says that I only have 34.9Mb left.
Your drive has 1,000,202,240,000 bytes which is 931.51092529296875 GiB (1,000,202,240,000 / 2^30). That's normal (Windows doesn't round, it just drops everything after 3 digits).

There's two possible explainations for the difference in used space:
1) The data you thought was deleted is still there because it is in a recycler. You'd have to empty the recycle bin to purge that data.

2) That is the space used by the file system. Every file and directory occupies space on the hard drive used to describe the file/directory. This size is not part of the actual files/directories on the disk but the data itself is on the disk. This is why it shows up when you check the drive capacity but not when you check the size of everything on the drive. If you did the same with having it show all hidden files and all hidden system files, they would likely line up closer.

In short, there's nothing wrong.
 

Mussels

Moderprator
Staff member
Joined
Oct 6, 2004
Messages
46,204 (9.52/day)
Likes
13,692
Location
Australalalalalaia.
System Name Daddy Long Legs
Processor Ryzen R7 1700, 3.9GHz 1.375v
Motherboard MSI X370 Gaming PRO carbon
Cooling Fractal Celsius S24 (Silent fans, meh pump)
Memory 16GB 2133 generic @ 2800
Video Card(s) MSI GTX 1080 Gaming X (BIOS modded to Gaming Z - faster and solved black screen bugs!)
Storage 1TB Intel SSD Pro 6000p (60TB USB3 storage)
Display(s) Samsung 4K 40" HDTV (UA40KU6000WXXY) / 27" Qnix 2K 110Hz
Case Fractal Design R5. So much room, so quiet...
Audio Device(s) Pioneer VSX-519V + Yamaha YHT-270 / sennheiser HD595/518 + Corsair Void RGB
Power Supply Corsair HX 750i (Platinum, fan off til 300W)
Mouse Logitech G403 + KKmoon desk-sized mousepad
Keyboard Corsair K65 Rapidfire
Software Windows 10 pro x64 (all systems)
Benchmark Scores Laptops: i7-4510U + 840M 2GB (touchscreen) 275GB SSD + 16GB i7-2630QM + GT 540M + 8GB
#5
everyone else has covered the stuff i was going to say.

the drive size is correct, thanks to HDD manufacturers reporting drive size differently to microsoft - and windows can cause missing chunks of space due to hidden backups/recycle bin, etc.