Q: Error: "We couldn't create a new partition or locate and existing one" installing Windows 8.1 via Bootcamp
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Sep 18, 2014 8:38 PMby Loner T,HelpfulDo not use rEFInd. There is another option, if you want to try it. W8.1 has much better EFI support than W7 or W8.
1. Delete the current Bootcamp partition via BA.
2. Create a partition via Disk Utility and format it as Free Space. An EFI install may have issues due to graphics, but this may tell us why it is failing.
3. Using the USB that you built using W8.1 ISO and BA, it should have an EFI Boot. Power cycle and using the Alt key select EFI boot.
4. Point to the partition that was created in step 2 and see how far you can get. It will get partitioned again into an MSR (~200MB) and MS Data partitions.
Caveat: I have had issues with a 2012 13" MBP and having some keyboard/boot issues.
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Sep 18, 2014 9:52 PMby JoeShmoe99,It worked! I removed rEFInd and installed using Windows EFI on the USB onto Free Space created by disk utility!
Thank you very much!
But now there is another problem. As you said, as soon Windows updated the graphics drivers the screen went black and is staying that way
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Sep 19, 2014 4:41 AMby Loner T,I was going to warn you not to run Windows update. Since you now have a working procedure, please blow away the MSR and MS Data partitions, convert them to Free Space, and re-install Windows. Do not forget to install Bootcamp drivers. Do not use Windows update for HW drivers. I would recommend using only Security and Office updates.
Also, let the Apple Geniuses/Windows Technicians know what you did. It is painful at times, when they want to charge you money for something that they should be doing free.
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Sep 19, 2014 4:53 AMby JoeShmoe99,I reinstalled and tried again using the Boot Camp drivers this time instead of Windows update; that is Boot Camp Support Software 5.1.5621, but I got the same problem, persistent black screen.
I'm talking to Apple chat support now and they don't know what to do :/ either
thanks for you help!
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Sep 19, 2014 5:52 AMby Loner T,Did you update the firmware on the Intel HD3K as part of the Windows driver update? The Tech Specs of your MBA are http://support.apple.com/kb/SP683
There is also an Intel driver - https://downloadcenter.intel.com/SearchResult.aspx?lang=&ProductID=3319&ProdId=3 319
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Sep 19, 2014 7:42 AMby JoeShmoe99,I didn't see any firmware update but it might have happened since the update was on automatically.
The current install has no updates from windows at all.
I'll try this intel graphics driver but i still need the rest of the updates from the Boot Camp Support Software. Can i just install them individually?
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Sep 19, 2014 8:35 AMby Loner T,This is another option. Remove Windows. Re-install it. Instead of using the setup.exe from Bootcamp folder, run each individual .exe driver file except the Graphics driver. This will force Windows to use the standard driver, but this means connecting external displays will not work. You will have a functional system without fancy graphics. You will also have a yellow triangle with an exclamation for HW that does not have the driver.
If you want to post a listing of drivers from your bootcamp USB, I can help pick which ones to install and which ones not to.
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Sep 20, 2014 11:55 PMby JoeShmoe99,Ok so here's what I did. My whole reason for getting Windows running in the first place was to use this external GPU. So I reinstalled Windows, installed the eGPU graphics drivers first (which only work for an external monitor), then installed the Boot Camp Support Software with my external monitor connected, restarted, then used Device Manager to roll back the HD3000 drivers. So this is almost the same installing each other driver individually.
It's still not perfect though. Nothing runs as well as it used to with a clean BIOS install. Unfortunately that's still not working for some reason. C'est la vie
Thanks for all your help!
If anyone else is reading this and needs help feel free to message me so we can give Loner T a break.
-JoeShmoe99
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Jan 26, 2015 6:01 PMby Gooz5,Hello.
I am having a similar issue to JoeShmoe99. I receive the same error message "We could not create a new partition or locate an existing one. For more information see the setup log files." This message is obtained after Windows asks to reformat the drive.
I have reviewed this feedback that you provided to JoeSchmoe99 but am not sure on how to proceed. My computer is an iMac 5K with Yosemite installed. Here is the output of the disktutil list command. Any help is appreciated. Thank you!
new-host-5:~ Hector_Desk$ diskutil list
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *251.0 GB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage 150.3 GB disk1s2
3: Apple_Boot Recovery HD 650.0 MB disk1s3
4: Microsoft Basic Data 99.8 GB disk1s4
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD *150.0 GB disk4
Logical Volume on disk1s2
7ACE478F-314C-4B6D-B880-1D6556E18BD5
Unencrypted
/dev/disk5
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *31.9 GB disk5
1: DOS_FAT_32 WININSTALL 31.9 GB disk5s1
new-host-5:~ Hector_Desk$
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Jan 27, 2015 6:57 PMby Gooz5,ok. I re-reviewed all your posts again and finally tried something that I had not done before . . . and it worked!
I disconnected the thunderbolt cable that I had connected to the Imac. The thunderbolt cable linked to a external hard drive. This did the trick. Windows installed fine thereafter. Thank you!
-hector
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Jan 28, 2015 6:37 AMby Loner T,Gooz5 wrote:
ok. I re-reviewed all your posts again and finally tried something that I had not done before . . . and it worked!
I disconnected the thunderbolt cable that I had connected to the Imac. The thunderbolt cable linked to a external hard drive. This did the trick. Windows installed fine thereafter. Thank you!
-hector
The Windows installer is very sensitive to any storage that can cause it problems. Glad to see it working.
