Missing HDD Space

Here is what I got from inputting the commands you gave me.

Last login: Tue Feb 16 20:43:29 on console

Christophers-Mac-Mini:~ Christopher$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *500.1 GB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 170.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 79.0 GB disk0s4

Christophers-Mac-Mini:~ Christopher$ diskutil cs list

No CoreStorage logical volume groups found

Christophers-Mac-Mini:~ Christopher$ sudo gpt -vv -r show /dev/disk0

WARNING: Improper use of the sudo command could lead to data loss

or the deletion of important system files. Please double-check your

typing when using sudo. Type "man sudo" for more information.

To proceed, enter your password, or type Ctrl-C to abort.

Password:

gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 976773167

start size index contents

0 1 MBR

1 1 Pri GPT header

2 32 Pri GPT table

34 6

40 409600 1 GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

409640 488816512

489226152 331980560 2 GPT part - 48465300-0000-11AA-AA11-00306543ECAC

821206712 1269536 3 GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

822476248 552

822476800 154296320 4 GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

976773120 15

976773135 32 Sec GPT table

976773167 1 Sec GPT header

Christophers-Mac-Mini:~ Christopher$

It seems that it didn't identify where the missing GB are according to my disks. It does not add up to 500GB but my full HDD is as shown 500GB. Last time I reinstalled OSX/my whole computer, I never got an option to fix/edit the partitions so please don't recommend reinstalling my computer lol, like I said, it'd be a hassle. Thanks and I hope this information I sent you tells you something because frankly, I have no idea what the parts mean after "Password:" lol!

-Christopher

Here's what I got.

Last login: Wed Feb 17 13:52:55 on console

Christophers-Mac-Mini:~ Christopher$ diskutil resizeVolume disk0s2 "limits"

For device disk0s2 Macintosh HD:

Current size: 170.0 GB (169974046720 Bytes)

Minimum size: 72.5 GB (72537083904 Bytes)

Maximum size: 170.0 GB (169974046720 Bytes)

Sorry I haven't replied super fast like you've doing (thank you!), it's just my email keeps notifying me many hours after the reply has been posted.

I do not recall ever resizing my EFI system partition. I only ever resized my Macintosh HD and my Windows partion. If you want more info on what happended, I'll tell you; I attempted Windows 7 but had a glitch where my Mac would only start with "No Bootable Device" and it was because somehow my Mac partition and faulty Windows 7 partition got corrupted so I reinstalled OSX unfortunately never giving me back my 250GB. I ended up splitting my only 250GB again last week for 170GB to my Macintosh HD and and 80GB to Windows 10. I never touched any other partitions or anything.

I don't have a backup of my Mac...at least I don't think so because I never enabled Time-Machine. If you want me to, I could I guess but it would take up some hefty space on my small 170GB Macintosh HD lol! I'm not home right now but when I am I'll send you an output of the Terminal response.

Like I said, I had an unsuccessful Windows 7 partition about six months ago. I got Windows 10 after creating a new partition about a week ago. I don't think that's considered an upgrade in that sense lol. If it makes anything better, when I start my Mac-Mini and hold option/alt, the 3 disks are Macintosh HD, Windows, and Recovery or whatever. Once again, sorry for the one-day responses, just busy.

Thanks!

First, here is what I got from putting in the terminal commands you said earlier.

Last login: Thu Feb 18 21:33:27 on console

Christophers-Mac-Mini:~ Christopher$ sudo fdisk /dev/disk0

Password:

Disk: /dev/disk0 geometry: 60801/255/63 [976773168 sectors]

Signature: 0xAA55

Starting Ending

#: id cyl hd sec - cyl hd sec [ start - size]

------------------------------------------------------------------------

1: EE 1023 254 63 - 1023 254 63 [ 1 - 409639] <Unknown ID>

2: AF 1023 254 63 - 1023 254 63 [ 489226152 - 331980560] HFS+

3: AB 1023 254 63 - 1023 254 63 [ 821206712 - 1269536] Darwin Boot

*4: 07 1023 254 63 - 1023 254 63 [ 822476800 - 154296320] HPFS/QNX/AUX

Christophers-Mac-Mini:~ Christopher$

About the backing up thing...see I don't really have a 80GB external storage...heck I don't even own more than a 4GB storage! I wouldn't be able to back it up on an external storage. If this means that I'll have to reinstall everything if something doesn't go as planned then I guess I don't really have a choice lol?

Yeah, the thing is my Mac-Mini model (and I think all Mac-Mini models) do not come with optical drives to use CDs, and I don't own an external optical drive I can plug-in/use. Sorry, I know it seems really inconvenient but I have no optical drive to burn a CD (but I do have blank CDs lol!) and no external storage. Can I boot it from a USB? Any suggestions?

Thanks.

The main download link seems broken. I tried another link and it worked.

So, what is this supposed to do? Am I supposed to put their .iso file on a USB and attempt to boot from it? I think it's more than that, no lol? Sorry...just a little confused and cautious.

Edit: I went to instructions but I cannot find the specific link for the GParted Live USB .iso and the instructions page only contains instructions for Windows/Linux, lol.

Ok. I'll tell you how it goes.

Ok.