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Guide for Installing OS X on Lenovo IdeaPad Y510p

ahmed_ais

By ahmed_ais,
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ahmed_ais
ahmed_ais
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You have a lot of partitions in a different scheme than the stock. That's why you had problems because the commands should have been executed with care. We are gonna try to restore your Windows and figure out the prober sequence of commands for your case. For now, and while you are there run this command: list vol then post a screenshot

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ahmed_ais
ahmed_ais
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First of all I would like to thank you for trying tonhelp me out.

Here is pic: http://www.upload.ee/image/4774163/image.jpg

 

You're welcome. I can see that your Windows partition has the letter C so let's see if you successfully backed up your EFI partition. Open a new command window (Shift+F10) and type : dir then check in the output if there is an entry called efi.bak

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TarvoMaesepp
TarvoMaesepp
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You're welcome. I can see that your Windows partition has the letter C so let's see if you successfully backed up your EFI partition. Open a new command window (Shift+F10) and type : dir then check in the output if there is an entry called efi.bak

Nope there is not :(

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ahmed_ais
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Aha .. so when you started the new command window it was not on C:. Anyway this is good sign!

 

Now you have two command windows opened:

  1. The first is running diskpart command
  2. The second is not running any thing (this is the one you used last)

In the first, type these two commands:

sel par 5
assign letter=B

In the second run this command:

dir B:

and see if there is an entry called EFI

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ahmed_ais
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Alright, in the second command window (on the right) type this command:

robocopy C:\efi.bak B:\EFI /mir

Take care and type it exactly as it is. When you are done, you should find two entries when you dir B: (Temp and EFI)

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ahmed_ais
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pretty much :D This thing is making me crazy. http://www.upload.ee/image/4774259/image.jpg

 

I een can't do lenovo repair.

 

Oops. That's ugly ... we have two options now:

  1. Try to fix it using the USB you have. If that failed,
  2. Reinstall Windows again :(

 

Boot up with the USB and open the command prompt ... 

sel disk 0
list vol   ----------------> note the one with label EFI
sel vol 4  ----------------> this is the number of that one 
assign letter=B

Then open another command window, let me know when you are done

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ahmed_ais
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Nothing, I think the best solution is 2. to reinstall windows. What do you think? The biggest problem is that after this I lose licence and lenovo backup?

 

I would prefer "clean slate" anytime so you can proceed from good position. You cannot lose your license by reinstalling the same Windows version. Your license key is hardcoded in your BIOS but losing Lenovo Recovery is very possible. I actually lost Lenovo Recovery the first day I bought this laptop just because I made some adjustments to partition layout. This means you might already lost it for good so move over it.

 

The problem with installing Windows is to find the proper version to match your key. I tried few ISO's and only one suceeded to activate automatically (with the key from BIOS). I would guess it will work with you as well:

Windows 8.1 (multiple editions) (x64) - DVD (English)
File Name: en_windows_8_1_x64_dvd_2707217.iso

If you bought your laptop with different language then a different ISO may be needed. That said, you can still install any version as a mid step.

 

This is a plan I would advice you to follow:

  1. Use the USB installer you have to install Windows
  2. You may not be able to activate it as it may not be the correct version but no problem
  3. Use Windows to backup all the important files to somewhere safe (OUTSIDE this disk drive)
  4. Use Windows to download the proper version of Windows ISO (the one that can activate using your key)
  5. Make a new USB installer with the new ISO
  6. Boot with the new ISO, remove ALL partitions, install Windows (do not choose Pro)
  7. Your Windows will activate correctly and you will have the correct number of partitions
  8. Go back to this guide and proceed with the commands one by one (I will help you so nothing is made wrong don't worry)
  9. Install OS X ... (finally) 
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TarvoMaesepp
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Thank you very much. I think I got the windows installation part, somehow, i had win 8 dvd with the original key which I got from dreamspark and windows is now installing. I hope not to see any barriers anymore at least with windows Tomorrow I am going to try OS X part again but for now I want to thank you again and lets be positive!! I am glad that you are available. Good night to you mate.

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ahmed_ais
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Thank you very much. I think I got the windows installation part, somehow, i had win 8 dvd with the original key which I got from dreamspark and windows is now installing. I hope not to see any barriers anymore at least with windows Tomorrow I am going to try OS X part again but for now I want to thank you again and lets be positive!! I am glad that you are available. Good night to you mate.

 

That's good. I would assume that the DVD you have will work with the accompanying key and will activate just fine. You should know that your laptop still have its own key stored in BIOS and will never get lost (unless you flashed a modded BIOS).

 

The one thing I want to make sure of is the partition layout after you install Windows. That's why I did not want you to rush into installing then we find problems later. What I want you to do is to continue with the installation as a temporary way to backup your data from the disk drive. Once you did that, I will want you to remove ALL partitions and install Windows from scratch. This will result in just 4 partitions in this order:

  1. 300MB Recovery partition
  2. 100MB EFI partition
  3. 128MB MSR (Microsoft Reserved) partition
  4. Rest of the disk Windows partition

​At this point we will continue safely using the guide.

 

No worry, I will help you getting this sorted out correctly. We all needed help at some point.

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intruder16
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@TarvoMaesepp,

 

As @ahmed_ais suggested, you should format the "whole drive" and install fresh windows. Be sure to make backup before. Install Windows and the Recovery, EFI and MSR partitions will be automatically created.

 

To refer to how to install Windows 8.1 refer this post i made before. (Note : you might have to do a google search for Windows 8.1 generic keys)

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ahmed_ais
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@intruder16 @ahmed did any one tried installing el capitan

I have the OS image and was thinking to give it a go. However, I do not (at the moment) feel like to try although I believe this guide is enough to get it working fine.

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TarvoMaesepp
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@intruder16 @ahmed Now I am at the phase wehere Windows is installed and I have only those partitions which you mentioned. But now I don't have working hackintosh to make bootable USB. Is it option to use torrent if I can say this word in this forum? And then use TransMac to make it bootable? Does it make any difference if I have 10.10 or 10.10.3 ? Can I update it later in OS X? My friend with mac is now in other city so I can't borrow his mac anymore :( I would like to make USB first and then think about backing up my things. I really don't want to reinstall windows again. It took too much time.

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Prathamesh555
Prathamesh555
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Use virtual machine and download their setup its on kickass it will be more reliable as you gonna need it again and again

 

And download virtual machine image for maverick don't go with Yosemite as it is buggy

And don't go with niresh hackintosh as it will install multibest during installation

So you won't be able to dual boot u need clover to dual boot unless you are installing on same disk

@intruder16 @ahmed Now I am at the phase wehere Windows is installed and I have only those partitions which you mentioned. But now I don't have working hackintosh to make bootable USB. Is it option to use torrent if I can say this word in this forum? And then use TransMac to make it bootable? Does it make any difference if I have 10.10 or 10.10.3 ? Can I update it later in OS X? My friend with mac is now in other city so I can't borrow his mac anymore :( I would like to make USB first and then think about backing up my things. I really don't want to reinstall windows again. It took too much time.

I hope that help a bit

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TarvoMaesepp
TarvoMaesepp
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Use virtual machine and download their setup its on kickass it will be more reliable as you gonna need it again and again

 

And download virtual machine image for maverick don't go with Yosemite as it is buggy

And don't go with niresh hackintosh as it will install multibest during installation

So you won't be able to dual boot u need clover to dual boot unless you are installing on same disk

 

I hope that help a bit

Thank you, I am going to try virtual machin.

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