Windows 8.1-Windows 10 dual boot

[Nikos K]

I want to dual boot my current Win8.1 with Win10.I wrote a USB stick with the Win10 iso file using Windows USB/DVD Download Tool,but when I boot to this USB,this error appears: https://www.dropbox.com/s/8bmgpfb3oj5r3t5/.facebook_1434570085443.jpg?dl=0

 

[senseijtitus]

Seems like a problem with the Image file you downloaded.

Try another fresh copy. There are tonnes of Windows 10 copies available in torrents. You can download one of them and make a botable usb using Rufus tool and try with that.

 

[USAFRet]

Seems like a problem with the Image file you downloaded.

Try another fresh copy. There are tonnes of Windows 10 copies available in torrents. You can download one of them and make a botable usb using Rufus tool and try with that.

There is zero need to get the current Windows 10 TP from a torrent. You get it direct from the source.
http://windows.microsoft.com/en-us/windows/preview-iso

 

[USAFRet]

I want to dual boot my current Win8.1 with Win10.I wrote a USB stick with the Win10 iso file using Windows USB/DVD Download Tool,but when I boot to this USB,this error appears: https://www.dropbox.com/s/8bmgpfb3oj5r3t5/.facebook_1434570085443.jpg?dl=0

At this late date, why are you wanting to install Win 10? You'll have to undo it pretty soon.

 

[senseijtitus]

Well torrent ISO files are pretty much used ones and are therefore pretty solid. When you download directly from the MS Website, there is always a chance that if there is some connection issue in the Internet, downloaded files could be corrupted and you will not know until you try to install it. It had happened to me many times.

 

[Nikos K]

I want to dual boot my current Win8.1 with Win10.I wrote a USB stick with the Win10 iso file using Windows USB/DVD Download Tool,but when I boot to this USB,this error appears: https://www.dropbox.com/s/8bmgpfb3oj5r3t5/.facebook_1434570085443.jpg?dl=0

At this late date, why are you wanting to install Win 10? You'll have to undo it pretty soon.

I don't know!I had Win10 downloaded for a long time,but I hadn't installed it yet,I just woke up and wanted to install it.

 

[Nikos K]

I deleted the USB and am now downloading again the iso.I'll try with that iso when it's finished

 

[Nikos K]

I tried the new iso and I get this message:
https://www.dropbox.com/s/hfsmlqnobxtqeje/20150620_114045.jpg?dl=0
https://www.dropbox.com/s/5wmbb93uynmjn5b/20150620_114054.jpg?dl=0

 

[senseijtitus]

Okay. This will be a little bit complicated. But try it. It may just work out. I hope you have no data in the HDD there.

Enter system installing interface by using Win 10 USB hard drive boot. and then press “Shift”+”F10” to open the command prompt.

Type “Diskpart” (do not input quotation mark os any of the suggested commands), and then press “Enter” key to enter operating interface.

Then type “list disk”: to check hard disk properties. Pay more attention to capacity of hard disk to select. Usually, disk 0 is hard disk, and disk 1 is the usb drive where wins 10 is in.

Type “select disk 0”: to select disk 0 as the disk that is operating System needs to be installed in. In your case, you need to note down which is the drive you want to install it in.

Type “clean”: to clean up current hard disk’s partition.(This is basically formatting the HDD.

Then after the previous command finishes execution, type “convert mbr”: to convert GPT into MBR.

type “create partition primary size = xxx”: to create the size of primary partition.(enter the needed size for each partition like this.

Type “format fs = ntfs quickly”: to format disk to NTFS quickly.

Now type “exit”: to finish operating.

Input “exit”: to shut down the command prompt.


Now you will need to refresh the partition table if the new partitions are not showing up.

Then try to install the OS.

Keep us informed.

 

[senseijtitus]

There are simpler ways if you are able to boot into any previously installed Windows version in that computer. Like using a 3rd party software like AOMEI Partition Assistant.

Try it if you want a simpler was from here. Its free to download and use.

http://www.disk-partition.com/download.html

 

[Nikos K]

From AOMEI Partition Assistant,if I press Convert to MBR disk,the files will be deleted,or it can be done without format?

 

[senseijtitus]

Yes. It is like formatting the HDD. But you can control the formatting by just selecting the drive you want to install Windows in.

 

[Nikos K]

I need the full version of the program to do a GPT to MBR conversion.Never mind,I won't install Win10.Anyway,I would have installed it only to see how it is.Thanks for your help

 

[senseijtitus]

You are most welcome Nikos K.