Windows 10: Dual Boot Partitions Messed Up

I am trying to dual boot OSX and Windows 10 on my desktop computer. OSX is fully installed, and I have created Windows 10 install media on a flash drive. I am able to boot into the installer, but when I tell the installer to install in the unallocated space ~250gb, it creates 4 partitions in such a way that the Recovery partition ends up being mounted as the C: drive which prevents anything from being installed. I have tried to reassign the partitions so that the main partition is assigned to the C: drive, but when I try to install after doing this, the installer cannot recognize my partitions because of the existing OSX partitions. The installer gives me the error "We couldn't create a new partition or locate an existing one." How can I fix this so the install will start working?


My drive is formatted as GUID partition table and I have ensured that my bios settings boot in UEFI mode.

:)

 

Dual Boot?

I can help here iv had both i used partition magic to split my HDD and i installed vista on one and xp was already on the other only problem is id watch out if i were you for some reason vista does not like to dual boot iv seen this on a couple of my machines and my buddys. so step one have xp installed step 2 find a partitioner of your choice i dont know of any except partition magic and the one included on xp...only thing is i dont think the one on xp will even partition them...then pop in your vista DVD and select the drive of your choice....the only thing i can think of that causes vista to hate dual booting sooo much is that when their are 2 OS's installed xp uses its own prog to list them on boot well vista uses a totally diff boot loader than the previous os's and i think they conflict the problems i hade were the standard missing windows folder missing HAL.dll and the nt one dont remember the name.....that and after your done vista and boot into xp things didnt like to start correctly specially if you scan disk with vista.

 

How to go about building a tri-boot system?

i dual boot all the time, and going in to tri boot is easy.

step 1) partition the drive in to 3 partitions ( leaving 1 empty for the linux installer. )
step 2) install windows on the first 2 partitions.
step 3) install linux, and let it auto partition the remaining space. ( i recommend at least 30gb of space for linux, because it will make things a lot easier. )

step 4) enjoy.

 

Install Windows 7 dual boot on Windows 10 laptop with GPT partition

Hi Krishna,

Really appreciate your advice! But, unfortunately, neither of your suggestions re shutdown worked for me.

In answer to your questions:

• What is the make and model of the computer? - Lenovo B570
• What are the troubleshooting steps that you have already performed? - all that I can find on the internet, eg stopping quick resume, powercfg, etc etc etc
• What exactly happens when you try to shut down the laptop? - the power button light stays on, and the fan speed increases
• How exactly are you trying to install Windows 7? - keep Windows 10, reinstall Windows 7 in a new partition for dual boot.

Note: I only have 1 hard disk in my laptop.

Thank you and any other expert will is willing to help out!