Q: 15" MBP Mid 2010, need to downgrade from El Capitan to Mavericks.

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Wayangolek

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Q: 15" MBP Mid 2010, need to downgrade from El Capitan to Mavericks.

Hello,

I upgraded my 15" MBP Mid 2010 to El Capitan a few days ago, now I want to get back to mavericks.

Here what I have tried:

- I downloaded 10.9.5 from app store and made a bootable USB disk using Diskmaker X 5 (all goes well up to this point)

- I restart holding option key, the USB boot option is there.

- Then.. Whenever I try to boot from USB, it shows a prohibitory sign, it just stuck there (light-grey screen with that sign)

Could you guys help me on how to get back to Mavericks? anything I could try?

Does internet recovery option will work with 15" MBP mid 2010?

Note: I have no timemachine backup, so that is not an option.

Thanks in advance.

MacBook Pro, OS X El Capitan (10.11), null

Posted on Oct 31, 2015 7:42 AM

I have this question too

Solved

Wayangolek

Level 1 (0 points)

A:

THank you for the link, i found the problem and able to fix it.

turns out that my usb stick isn't formatted properly before, Reformatted it with the GUID opt this time, and it works. Installing mavericks now, so happy .

Thanks!

Posted on Oct 31, 2015 10:49 AM

Q: 15" MBP Mid 2010, need to downgrade from El Capitan to Mavericks.

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by Duane,

Duane Oct 31, 2015 7:51 AM in response to Wayangolek
Level 10 (124,018 points)

Oct 31, 2015 7:51 AM in response to Wayangolek

FYI, the only way that this will work is if you erase your hard drive and then install Mavericks. If you don't want to lose all of your other files, you need to do a backup now.
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by Wayangolek,

Wayangolek Oct 31, 2015 8:27 AM in response to Duane
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Oct 31, 2015 8:27 AM in response to Duane

already backup all my data files, now I just need to find a way to get back to mavericks, whenever I try to do a clean install with 10.9.5 bootable USB, it always stuck at that prohibitory sign.
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by Duane,

Duane Oct 31, 2015 8:38 AM in response to Wayangolek
Level 10 (124,018 points)

Oct 31, 2015 8:38 AM in response to Wayangolek

With the USB drive installed, did you hold down the option key and boot.
Starting from an external USB storage device (Intel-based Macs) - Apple Support
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by Duane,

Duane Oct 31, 2015 11:16 AM in response to Wayangolek
Level 10 (124,018 points)

Oct 31, 2015 11:16 AM in response to Wayangolek

Great!
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Accepted Answer · Oct 31, 2015 10:49 AM

Wayangolek

Level 1 (0 points)

Oct 31, 2015 10:49 AM in response to Duane

THank you for the link, i found the problem and able to fix it.

turns out that my usb stick isn't formatted properly before, Reformatted it with the GUID opt this time, and it works. Installing mavericks now, so happy .

Thanks!

Q: 15" MBP Mid 2010, need to downgrade from El Capitan to Mavericks.

All replies Helpful answers

by Duane,

by Wayangolek,

by Duane,

by Wayangolek,Solvedanswer

by Duane,

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