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Windows Tech Preview dual boot

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Is it possible to dual boot with Windows 10 and Linux? I had Windows installed on the entire disk. I went to disk management to create a partition for Linux (30 GB). When setting up the partition in Ubuntu, the whole disk was; however, no partition was even displayed. You know, how Ubuntu uses colors for different partition types.. the whole thing was gray or white.

Did I do something wrong?
 

[Ion]

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Well, I can't speak for Windows 10, but I know that on previous Windows versions (at least up through Windows 8), yes, it's entirely possible; I'm doing so with Windows 8 and Linux Mint on one system. Can you give us a screenshot of the disk partition tool and what you see?
 

OneMoar

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if you have more then one disk then I highly recomend you install linux and grub to that one
that why you keep the boot-loaders isolated should something happen
anyway this is how i do it
case #1 single drive GPT partition structure should be as follows
64MB Formatted as FAT } set the "bios_grub" or "bios_uefi" flag with gparted on this partition
Linux Primary Partition }
Linux Swap }
384MB NTFS } partition for the windows recovery environment to exist in
Windows Primary Partition }
if you aren't using UEFI and don't need fast boot you can skip makin the 64MB partition ..
*make sure secure boot is off and "UEFI OS or UEFI BootLoader" is selected as the primary boot in the BIOS
 
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Well, I can't speak for Windows 10, but I know that on previous Windows versions (at least up through Windows 8), yes, it's entirely possible; I'm doing so with Windows 8 and Linux Mint on one system. Can you give us a screenshot of the disk partition tool and what you see?

I will have to do it at some later time, because I ended up getting frustrated and installed Ubuntu on the entire disk.
 
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Here's what's going on. I went back to Windows 7 thinking I could dual-boot with Ubuntu to no avail. The same thing is going on! I shrunk my HDD by 45 GB to make room for. In the past, Ubuntu would see both partitions and allow me to pick just the 45 GB and not use the whole drive
 

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Use another partition manager
 
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I tried. When I used GParted, I got a strange message about my disk containing a GPT signature. I had to use killdisk to write zero on my drive. Now, I am able to dual-boot
 
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