Windows 10 over Linux Mint

Questions about Grub, UEFI,the liveCD and the installer
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vandyG
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Windows 10 over Linux Mint

Post by vandyG »

I have only Linux Mint installed on PC (not dual boot) and I want to install Windows 10 alongside (not in Virtual Box or something). I want Win 10 to run a few software. I don't wanna screw up and don't wanna wipe my data on LM.
TIA.

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Kadaitcha Man
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Re: Windows 10 over Linux Mint

Post by Kadaitcha Man »

vandyG wrote:
Fri May 08, 2020 1:27 am
I don't wanna screw up and don't wanna wipe my data on LM.
Then make sure you have a backup.
It's pronounced kad-eye-cha, not kada-itcha.

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jp14
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Re: Windows 10 over Linux Mint

Post by jp14 »

from what iv'e read here it seems better to install win10 first and then LM after that.
so that means you going to have to back up ,then clean install win10 alone and after that install LM alongside.
Isn't there software in LM that will do the same as the ones you want to use with win10?
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AndyMH
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Re: Windows 10 over Linux Mint

Post by AndyMH »

I think as a minimum you will need to reinstall grub. Is this a legacy or UEFI install?
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pbear
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Re: Windows 10 over Linux Mint

Post by pbear »

vandyG wrote:
Fri May 08, 2020 1:27 am
... don't wanna wipe my data on LM.
That's a Windows problem. Its installer will use the whole internal hard drive. AFAIK, unlike Linux, no way to specify which partitions to use.

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Bolle1961
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Re: Windows 10 over Linux Mint

Post by Bolle1961 »

Have not installed windows the last couple of years, but you could choose the partition(s) you want to use.
Make empty space at the beginning of your hard drive, windows can then make the necessary partitions and install.
Your Grub will be ruined, but yoiu can fix it with rescatux / supergrub and some more tools
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pbear
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Re: Windows 10 over Linux Mint

Post by pbear »

Cool. Certainly it's easier to reinstall Grub than it is to reinstall the whole system.

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arvy
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Re: Windows 10 over Linux Mint

Post by arvy »

Bolle1961 wrote:
Fri May 08, 2020 3:17 pm
Have not installed windows the last couple of years, but you could choose the partition(s) you want to use.
Confirmed. That remains the case with the most recent W10 release provided that one selects for "Custom" installation and follows carefully the options for installing to unallocated space on a pre-formatted drive. Depending on the answer to AndyMH's question above, it may not even be necessary to re-install grub. For BIOS-MBR booting, of course, the current master boot record will get overwritten inevitably and will therefore require grub re-installation. But for a UEFI-GPT "Custom" set-up, Windows should only add its own bootmgfw.efi loader under /EFI/Microsoft/Boot, and also as the /EFI/Boot/bootx64.efi fallback, thus making itself the default. However, it should not affect the currently installed /EFI/ubuntu/grubx64.efi loader which should remain available for reselection in the system's UEFI (NVRAM) boot order set-up.

In any case, I would very strongly endorse Kadaitcha Man's recommendation about having a backup. No OS installation or upgrade process can ever be relied upon absolutely to adhere strictly to the theoretical ideals. Especially not MS Windows and its forthcoming '20H1' release.
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