TWO DIFFERENT HARDDRIVES ON MY MAC ONE FULL ONE NOT????

Hi! So maybe I am really stupid- but I don't think I am truly THAT dumb!

I recently purchased a mid-2012 Mac Book Pro from Gumtree (a classifieds site in Australia)... went to their house, the laptop seemed in good condition and they said they only ever watched movies etc on it...The house i went to pick it up from seemed nice enough... they seemed like average people. Although now they don't return phone calls or anything...hmmmm... I paid $450. Down from about $600. I would love to buy a new one but I'm a uni student... beggars sometimes cannot be choosers - as the saying goes! (I HATE that saying now grrrrr) .... Anyway... before this I had a brand new Mac Air that just suddenly stopped turning on... yup... just went dead.... Luckily I had iCloud Drive and iCloud desktop so i saved most of my files .... BUT- when I got the MBP home and set it up as you usually would using your iCloud log in etc... I realised over the next week or so it got slower and slower .. I went through ALL the tips I could find online to speed it up because it just starts the coloured beach ball of death every time I open or close a program! It's driving me insane... I think I have used FORCE QUIT MORE TIMES THAN I EVER HAVE ON ALL MACS I'VE EVER USED! INCLUDING MY 2007 IMAC FFS!!! NOW THAT IS SAYING SOMETHING!!!! Upon reading about Disk Utility I went into it and examined mine and although just like on my Mac Airs info under- "About This Mac" its says "Storage - 428GB of 500GB('ish') free -(so I am using about 70gb). BUT- under DISK UTILITY- IT says two things:

In the side bar:

Internal

APPLE HDD HTS545050A7E362 Media
SATA Internal Disk Physical Disk . GUID Partition Map 500.11 GB
Macintosh HD
499.53 GB

Then in a table under that it says the following:

Location: Internal Capacity: 500.11 GB
Connection: SATA Child count: 3
Partition Map: GUID Partition Map Type: Disk
S.M.A.R.T Status: Verified Device: disk0



Then ALSO in the side bar (and the disk image that shows up whenever I am asked where I want to save new applications to etc...)

Macintosh HDCoreStorage Logical Volume • Mac OS Extended (Journaled) 498.88GB (Used 70.33- Free 428.55)
And in its chart below is the following info:

Mount Point: / Type: CoreStorage Logical Volume
Capacity: 498.88 GB Owners: Enabled
Available: 436.54 GB (7.99 GB purgeable) Connection: SATA
Used: 70.33 GB Device: disk1



I don't UNDERSTAND HOW MY HARD DRIVE (THE APPLE HDD one) is full to total capacity when I don't have have enough files and applications to fill a 128GB Mac Book Air??? And WHY is there two hard drives? It makes zero sense to me. I am going to copy and paste the info from the system report below: (It will likely take about 5 minutes to load the system report as everything literally takes MINUTES -NOT SECONDS - TO LOAD OR DO ANYTHING ON THIS MAC THE LONGER I HAVE IT!!!!

UNDER HARDWARE: SATA/SATA EXPRESS

Intel 7 Series Chipset:



Vendor: Intel

Product: 7 Series Chipset

Link Speed: 6 Gigabit

Negotiated Link Speed: 3 Gigabit

Physical Interconnect: SATA

Description: AHCI Version 1.30 Supported



APPLE HDD HTS545050A7E362:



Capacity: 500.11 GB (500,107,862,016 bytes)

Model: APPLE HDD HTS545050A7E362

Revision: GG2AB990

Serial Number: TNS5193TJAPKNG

Native Command Queuing: Yes

Queue Depth: 32

Removable Media: No

Detachable Drive: No

BSD Name: disk0

Rotational Rate: 5400

Medium Type: Rotational

Partition Map Type: GPT (GUID Partition Table)

S.M.A.R.T. status: Verified

Volumes:

EFI:

Capacity: 209.7 MB (209,715,200 bytes)

File System: MS-DOS FAT32

BSD Name: disk0s1

Content: EFI

Volume UUID: BDC1974F-6B8C-3DAE-9DB2-3AA3C17BF506

disk0s2:

Capacity: 499.25 GB (499,248,103,424 bytes)

BSD Name: disk0s2

Content: Apple_CoreStorage

Recovery HD:

Capacity: 650 MB (650,002,432 bytes)

BSD Name: disk0s3

Content: Apple_Boot

Volume UUID: FCCA323C-8C1A-3176-858D-CED3D24FCB37




AND UNDER HARDWARE/STORAGE:

Macintosh HD:



Available: 423.07 GB (423,068,057,600 bytes)

Capacity: 498.88 GB (498,876,809,216 bytes)

Mount Point: /

File System: Journaled HFS+

Writable: Yes

Ignore Ownership: No

BSD Name: disk1

Volume UUID: 2A9561EC-8CEB-39BA-878C-21ADFAEA8761

Logical Volume:

Revertible: Yes (no decryption required)

Encrypted: No

LV UUID: 3FDC3F14-697C-4093-B038-F58ACF92D93A

Logical Volume Group:

Name: Macintosh HD

Size: 499.25 GB (499,248,103,424 bytes)

Free Space: 19 MB (18,972,672 bytes)

LVG UUID: A7167887-4B68-4059-9B01-B34B06A15B2E

Physical Volumes:

disk0s2:

Device Name: APPLE HDD HTS545050A7E362

Media Name: APPLE HDD HTS545050A7E362 Media

Size: 499.25 GB (499,248,103,424 bytes)

Medium Type: Rotational

Protocol: SATA

Internal: Yes

Partition Map Type: GPT (GUID Partition Table)

Status: Online

S.M.A.R.T. Status: Verified

PV UUID: EFE81E7B-857A-4FFA-BAB2-85D2F80E339D




Can someone PLEASE tell me what to do? when I run First Aid on the Apple HDD (the full capacity one) it SOME TIMES says its okay and the partition map appears to be okay and then other times some thing is wring that could affect boot up do first and in recovery mode. But I just did it and for the first time ever it says its okay with a green tick?!!! But the computer is still SLOW AF!


I want to delete this 500gb of crap i clearly don't need! it's not mine clearly!

Can someone PLEASE PLEASE HELP!

I am not very smart in terms of computers.



Thank you SO much in advance!



Livvie;-)

 

Thank you all so much.. I ended up calling apple (even though it said my mac was too old to call them on the Apple site from my serial number) and the man didn't even think twice before screen sharing and helping me! He said it is totally normal) But I AM going to get SSD - I think that advice is great! Thanks all! Liv.