[NAME] I believe the procedure post by Ron is this procedure: [URL] Note that the procedure is for Windows 10 but I believe it should work for Windows 11 but I have no experience that it will. Note also that the BIOS change in not made until step 4 of the procedure. I am sure what you mean by "get LInux to see Windows 11 OS". Do you mean to access the files on the Windows drive or do you mean dual booting the OSs? I don't have any experience with that although I can run Linux Mint in a virtual machine and share files with Windows 10 using a shared folder. 
Just purchased a standard build 8940 with 500GB SSD and 1TB HD.  Trying to get Linux to see Windows 11 OS but no luck.  I've read it's a RAID vs AHCI issue but so far I haven't been able to change from RAID to AHCI in BIOS without getting the dreaded BSOD. (BTW, thank you DELL for the self-repairing BIOS!) I've tried changing the Registry ... iaStorV and storahci per a recommendation but that failed. I've seen a post by Ron here that was very simple (rebooting in Safe Mode) but haven't tried it. With the current builds, can you switch from RAID to AHCI in Win 11 if the system comes with an SSD and HDD installed?  I don't intend to use the HDD for anything other than backups. I've also installed a second SATA HDD if that makes a difference (where my Linux OSs are installed) If it's possible to boot in AHCI mode, how is it done? Thank you for your time.    
XPS 8940, Windows 11, dual boot RAID vs AHCI