This simply doesn’t work. I’ve set up many dual boots with Mint and Windows 10, but something has changed. I never had to make a new partition for Mint before, but even doing this, it only gives the option of formatting the entire disk, thus wiping out Windows.

I boot to USB through Win10, > choose device > “USB.

(Reason, I do it that way is because my bios are NOT allowing legacy, and only UEFI, so no choose the BIOS!)

I choose the “install mint” icon on the Mint desktop!, then no choice but to install it alongside Windows. NONE!

So I choose something else, and go thru choices, Language, etc., and SKIP WIFI, and SKIP media thingy’s, to INSTALL, and see the little ROUND spinning thingy for 30 Minutes and go back to Win10 UGH!.

I did have Grub2 with Mint as Starting OS and Win10 bootloader choice until I tried to install Winland to have. Android on Mint screen! And good ole Winland totally messed up Grub2 so the only CHOICE I have now is Win10.

luck!

@Paddy,

If you use Fast Shutdown or Fast Boot on your Window system, the hardware drives that were in use avoid getting unmounted, due to this the Linux system is unable to use those drivers as they are still used by Windows. This might be the issue.

The drive doesn’t have an MBR partition, but a UFEI one. I’m not sure if that’s the problem, but in the Installation type window, there is a list of 4 partitions.

sda shows 1 MB of free space
sda1 (Fat32) shows 104, with 33 used
sda2 shows 16, with "unknown used"
sda3 (ntfs) shows 513428, with 54558 used (Windows not recognized)
sda4 (my intended linux partition) shows 510656 free.

When I select it, the + button is greyed out, and I can’t set up home, root, or swap.

I can’t proceed without doing so, and I can’t do it.

Any suggestions were very welcome. Usually, this takes me 2 hours. I’m on my third day now.