If the problem is with the grub or NTFS boot will 2 drives help. Or do you bios select drive
Never tried this except to install linux
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Yes. Two separate drives for two separate OS, obviously helps because that is not a dual boot system. If you press F12 key on your keyboard (press multiple times so that the BIOS doesn’t skip and this key ) at the time of booting brings up the BOOT MENU from BIOS. It is the shortcut process of selecting the drive through BIOS. But REMEMBER, you MUST DISCONNECT ALL THE DRIVES EXCEPT THE DRIVE WHERE YOU ARE GOUNG TO INSTALL LINUX BEFORE STARTING THE INSTALLATION. After installation, connect all the drives again and boot into Windows. Then DEACTIVATE ‘FAST BOOTING’ and ‘HIBERNATION’. THIS IS A MUST OTHERWISE YOU WILL NOT BE ABLE TO MOUNT OTHER NTFS DRIVES/ PARTITIONS IN LINUX. Another thing, YOU MUST SHUTDOWN AND THEN TURN YOUR PC ON EVERYTIME YOU SWITCH BETWEEN THE TWO OS. Because Windows tends to keep capturing the drives in case of a quick restart. It may not, but if it does, then it will be a problem.
Note: Dual booting Windows and Linux sounds pretty fancy, but in reality, it gives more headache than you will get by reading my post and implementing it. 
And lastly, disabling ‘SECURE BOOT’ in your motherboard’s BIOS would be a great idea to be on the safe side always in case of using two OS in the same PC. Here is a link to justify my advice : https://forums.linuxmint.com/viewtopic.php?t=427297&sid=dab5f35699069b1d030e710a1eb3c793&ref=news.itsfoss.com#:~:text=rev%20...%20cess/34996-,In%20case%20this%20can%20help%20anyone%2C%20here%20is%20what%20worked%20for%20me%3A,-1.%20Disable%20Secure
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Absolutely right and I find it as the best solution to use two seperate OS in one PC.
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Why the confusion about a Windows/Linux dual boot? About all PC’s being built today have UEFI and a gpt disc, and Windows, by default will protect the Fat32 boot partition, in other words, Windows and or the mfg, has ownership, of the said Fat32 boot partition. doesn’t matter if one, two or even three drives are used, and Linux will need a Fat32 partiion and sometimes a bios_grub partition to boot a gpt disc.
Now how does one defeat this?
Windows 11 by default will only boot from a gpt disc using UEFI, Linux could care less.
If you have a machine like this, do not try a dual/boot but run Linux in a VM. If you are willing, then boot tha PC with a gparted usb and then delete all partition and reset the gpt, and then set the Fat32 and the Linux partitions that are needed.
Then boot with the Linux installer and choose the “something else” and mount the partitions.
There are other ways to defeat this and get Linux on some of these PC’s, and by far, the easiest, is just run a PC built for Linux and one built for Windows.
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Excellent but this is far complicated to do in reality and can be done ONLY by a super-expert on Linux which I think you are. But for a newbie like me, I think my solution (not mine but I found it on internet) is more suitable and easily achievable.
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What do you mean, by “being complicated”? Are you ready to ditch Windows?
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Difficult to define expert … many of us here just have more years on computers than we would care to admit to, and just love technical problems which makes us think … keeps us active in mind.
I personally ditched windows a long time back and now only touch them for clients and virus or problem solving issues.
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That is OK, but for myself, and my old Dell machine, I still boot Gentoo and XP!!! My W11 machine will only run W11 and Linux in a VM, just cannot justify Linux on that machine, after spending xxxxx amount of $$$$ to build.
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One of the advantages of being self employed and semi retired I get to please myself over systems.
Plus every machine in my workshop is a recovery of bits removed over time from clients none working systems.
So my apple Mac book pro is 14 years old. Running LMDE on a disk from a none working hp laptop and memory from another that had blown the motherboard. External keyboard from a dead tower… The power supply is self built except the connection to the Mac.
The Mac was rejected as it could not be upgraded from snow leopard and safari would not visit some sites like bank.
Real heath Robinson machine.
Others are similar
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Beside the freedom , another major advantage of using Linux is that I can get the same performance on second hand hardware for the fraction of the price -wekk, asszmibg running on bare metal, not in a VM
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I have a relatively new HP Win11 box. Just games. It’s a console. Real work and real data are all done on a Linux box and stored externally. It’s really safer and more convenient than dual-booting. There are too many used computers available for peanuts to mess with dual-boot problems.
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Each to their own but my W11 machine does not need any help from Linux.
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It will when it ages and Win is no longer an option.
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I doubt that will happen in my life time!!!
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Depends on the requirements for windows 13 …yes thirteen
As 12 is still unclear
Eol from microsoft cause these issues for so many thats why after windows 8 I abandoned microsoft
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Is not the next feature update in October?
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I am getting ready. 
I will never spend xxxxx amount of $$$$ to build a PC only for the sake of using Win11 because I don’t like to be commanded as I was and I am self-employed for my entire life. I suggest my clients about what to do or not. I troubleshoot their problems and recommend things and they do so. So, Microsoft is NOBODY who can order me or compel me to do things as they see fit. I HATE MICROSOFT. Microsoft has become the biggest begger in the history and I don’t encourage begging. So, I will ditch Windows for good and use Linux as my primary OS. I admit that I have to keep Windows in separate drive like I have kept it now for troubleshooting purpose. But I will never use it as my main OS.
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Please don’t take it otherwise, if you are so content with your Win11 machine, then why are you here in the first place because this community is dedicated to Linux?! I know it’s a dumb question, but still… 
I think it is important that if members like Daniel want and use windows they should be encouraged to remain members, part of the idea of this site is to encourage a community where all are welcome, can contribute, and add to the discussions.
Its a learning experience for us all and we cannot exclude choice, most of the time its due to work commitments that users are forced down a windows route. But being part of the group here allows guidance towards linux.
Most of my clients are windows users who come to me for fixes or virus issues, my recommendation is always a linux solution but not everyone takes that road.
I know we have mac users as well.
Everyone welcome
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