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el capitan and mountain lion

Can i have dual osx on My MacBook i currently have el capitan but i need mountain lion to get My mackie audio device to work again how do i do this?

MacBook Pro (13-inch Mid 2012), OS X El Capitan (10.11.3)

Posted on May 1, 2016 11:53 PM

20 replies

May 2, 2016 1:17 PM in response to Lexiepex

EtreCheck version: 2.9.12 (265)

Report generated 2016-05-02 22:05:31

Download EtreCheck from https://etrecheck.com

Runtime 2:43

Performance: Excellent

Click the [Support] links for help with non-Apple products.

Click the [Details] links for more information about that line.

Click the [Remove] links to remove adware.

Click the [Check files] link for help with unknown files.

Problem: No problem - just checking

Hardware Information:ⓘ

MacBook Pro (13-inch, Mid 2012)

[Technical Specifications] - [User Guide] - [Warranty & Service]

MacBook Pro - model: MacBookPro9,2

1 2,5 GHz Intel Core i5 CPU: 2-core

4 GB RAM Upgradeable - [Instructions]

BANK 0/DIMM0

2 GB DDR3 1600 MHz ok

BANK 1/DIMM0

2 GB DDR3 1600 MHz ok

Bluetooth: Good - Handoff/Airdrop2 supported

Wireless: en1: 802.11 a/b/g/n

Battery: Health = Normal - Cycle count = 171

Video Information:ⓘ

Intel HD Graphics 4000

Color LCD 1280 x 800

System Software:ⓘ

OS X El Capitan 10.11.4 (15E65) - Time since boot: less than an hour

Disk Information:ⓘ

APPLE HDD HTS545050A7E362 disk0 : (500,11 GB) (Rotational)

EFI (disk0s1) <not mounted> : 210 MB

Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB

Namnlös (disk0s4) /Volumes/Namnlös : 31.55 GB (31.43 GB free)

BOOTCAMP (disk0s5) /Volumes/BOOTCAMP : 34.87 GB (26.31 GB free)

Macintosh HD 2 (disk1) / : 432.20 GB (241.80 GB free)

Encrypted AES-XTS Unlocked

Core Storage: disk0s2 432.57 GB Online

HL-DT-ST DVDRW GS41N ()

USB Information:ⓘ

Apple Inc. Apple Internal Keyboard / Trackpad

Apple Computer, Inc. IR Receiver

Apple Inc. BRCM20702 Hub

Apple Inc. Bluetooth USB Host Controller

Apple Inc. FaceTime HD Camera (Built-in)

Thunderbolt Information:ⓘ

Apple Inc. thunderbolt_bus

May 2, 2016 1:21 PM in response to Lexiepex

but i didn't buy it 2012 i bought it 2014

Lexiepex

Level 6

14,102 points

May 2, 2016 1:26 PM in response to Mickedahlgren

Partial information, have a good night sleep.

May 2, 2016 1:26 PM in response to Lexiepex

i bought the computer in 2014 so yosemeti was installed when i got it then i upgraded to el capitan.

yesterday i bought a sound card from mackie a Onyx Blackbird. the thing is that last known OS X to work with this sound card was Mountain lion. They have stopped producing this model and mackie don't care to update drivers so i can use it on el capitan. thats why i want to start my computer in mountain lion from a usb stick while still have my El capitan untouched thats all i wanted to do

kahjot

Level 4

2,462 points

May 3, 2016 5:57 AM in response to Mickedahlgren

That machine can run Mountain Lion just fine. The problem is that even if you buy Mountain Lion, the incredibly annoying App Store is probably going to refuse to let you download it because you are running a later OS. It doesn't allow for the possibility of someone having a need to download an earlier OS in order to install it on another drive or partition. Maybe someone here knows of a way for you to get around that. If you can get Mountain Lion, I'd suggest installing it on an external hard drive rather than a USB stick.

el capitan and mountain lion