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All replies
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Helpful answers
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Jan 27, 2016 7:13 PM in response to Loner Tby Skidgy,OK! So I followed those instructions earlier in the day and the issue remained. However, when I did it, I still had an external drive connected. This time, with the drive disconnected, it fixed the issue. I still had to select "Format" on the BC partition within the Windows installer, but instead of receiving a second error, the installation started!
Now I'm just wondering what the SMC and NVRAM had to do with it?
Thanks Loner T!
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Jan 27, 2016 8:15 PM in response to Skidgyby Loner T,Depending on the error message, the NVRAM contains variables used by Bootcamp which control the installation of Windows across several reboots as needed by Windows. If these are not set, removing the storage will fix the issue, but if they are set, you will need to do both, remove the external storage and run NVRAM reset. SMC reset will rebuild the hardware database which will help with drivers installation after the base Windows installation.
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Feb 5, 2016 3:57 PM in response to Plysovej_Kaktusby Vorcyon,This was the piece I was missing. Loner T got me started with his general information about disk structure and volumes and in particular his instructions on how to rebuild my 3TB Fusion drive, but I still couldn't get Windows 10 installed. I tried many things, even downgrading to Yosemite, but it still wouldn't work. Reset the PRAM and boom! Everything is great now. Thanks to both of you!
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Mar 3, 2016 10:06 PM in response to Loner Tby vizi0n,THe PRAM reset can be done at any time, but in my case if I was doing it without the drive being 1 partition it wouldn't do a thing and the same error would come back again and again.
Making the drive 1 partition again using the bootcamp assistant then resetting the PRAM and rerunning the bootcamp assistant to partition the drive and launch the installer worked every time. It even did last week when I reinstalled Win8. I had forgotten what the "magic trick" was. I had to Google for my nickname and Bootcamp lol
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Mar 7, 2016 9:06 AM in response to Loner Tby __RobberBarron__,Hi Loner T, Have a similar issue here whereby the installation of Bootcamp was unsuccessful.
Having booted mac to OS X and attempting to remove the Bootcamp partition, the option was not there.
Booted the Mac into local recovery and there were four partitions present, Mac OS X, Bootcamp, 1.16GB partition and a 16BG partition.
Ran first aid on the Mac HD and Erased the Bootcamp Drive Partition - 16GB partition diappeared once the Boot Camp partition was removed.
The drive was set back to Mac HD (one partition)
Checked with diskutil cmd to see if LVG is okay -> no LVG found
Tried /sbin/fsck -fy -> getting: volume is mounted with write access. Rerun with -l to freeze volume
Rebooted the mac and now the Mac Pro has a flashing question mark and will not boot.
Single user mode is not working either.
Any suggestions most welcome.
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Mar 7, 2016 4:39 PM in response to __RobberBarron__by Loner T,Can you boot into Internet Recovery and post the output of
gpt -vv -r show /dev/disk0
You can also use the Safari in Recovery Console to post a screen shot.
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Mar 8, 2016 6:21 PM in response to __RobberBarron__by Loner T,How many disk drives are connected in your Mac Pro?
You will need to unfreeze the volume. Fsck should be run in Internet Recovery, otherwise, the Recovery HD being mounted will interfere with fsck.
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May 3, 2016 1:08 PM in response to Skidgyby notsteveb,Hopefully you've fixed this by now, but this is happening because you're loading the ISO from an external drive.
I had this issue and it drove me totally crazy, but it turns out that newer models can install windows with the ISO just loaded from the boot drive's downloads folder. In hindsight I don't know why I thought I had to be using an external HD, or something other than the boot drive, but I did.
Once I ran Bootcamp and had the ISO in my regular Downloads folder, it worked fine. Within Windows setup I had to select the BOOTCAMP partition and format it using the wizard in the setup interface (takes like 15s), but after that it finished installing and it works like a dream.
Apple should TOTALLY update the Bootcamp instructions to make it clear that you shouldn't use anything external in the process unless you have to via prompt. Would have saved me weeks of hassle and a decent chunk of money I spent on now (to be returned) El Capitan-compatible audio hardware.
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May 3, 2016 7:31 PM in response to notstevebby Loner T,It is documented - Boot Camp: "We couldn't create a new partition or locate an existing one" alert during Windows 8 install - Apple Support .
Disconnect all Thunderbolt and USB storage devices, except for the USB media which contains the Windows ISO installer.
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May 23, 2016 2:33 AM in response to madirishmanby Noel Chong,the issue happen is due to others storage device like memory card or other usb drive still plugged in to your mac, please only connect the installation stick to yr mac and perform the installation again
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Jun 2, 2016 11:10 PM in response to madirishmanby Zeno Lee,PRAM rest did it for me.
I had bookmarked this discussion because I had the problem where I could not install into the bootcamp partition.
I had started from scratch recreating all the partitions from recovery still no dice.
Then I did a PRAM reset and I've been able to go back to windows on bootcamp again after a 5 month break.
