Windows 10: Convert UEFI to Legacy for Windows 7 installation

I have Ideapad 330s with Windows 10 64-bit pre-installed out of box in UEFI mode and GPT partition style .

i tried to boot Windows 7 64 bit GPT style via Bootable USB but it shows an error0x000000d : an error occurred while attempting to read the boot configuration data .



do need to convert UEFI mode to Legacy ?

and the partition style from GPT to MBR ?


i don't know how to proceed with Windows 7 installation.

Please Help.

:)

 

Trouble installing windows 7 on RAID in UEFI

As the title says, I'm trying to install Windows on a RAID array in uefi on my Maximus V Formula. When using legacy ROM I can install just fine but I go into CSM and change settings to UEFI only, I can build the array in the UEFI Raid driver (IRST tab in "BIOS") but the array does not show up in the boot menu and when I try to install windows (boot from UEFI DVD drive), The drive does not show up in the Windows install. The next thing I tried was to enable UEFI and legacy oprom in CSM, boot from UEFI DVD drive and install to the RAID array (probably detected by legacy oprom) and it will install. After first reboot, Windows Boot manager will show up as an option in the BIOS boot menu so I set that as first boot device and reboot. I will get to the starting windows screen and then BSOD (too quick to get codes) The last thing I tried was Changing to legacy mode and installing windows to a different drive. once installed, I initialized the Raid array as GPT and rebooted, changed csm back to UEFI only but they RAID array still doesn't show in the boot device list so I repeated the earlier process hoping that It might work because I had initialized as GPT but it still BSODs on starting windows screen. Any help or suggestions would be greatly appreciated

 

Trouble installing windows 7 on RAID in UEFI

I think you were on track with your first try. Windows installer probably needs the RAID driver in order to detect it on install.

 

UEFI install vs legacy install

I don't think I can enable CSM for my motherboard without running into errors eventually, it just does not seem to like having uefi with csm on strangely. So everything went smoothly for your uefi install with CSM? By now I would thought uefi and uefi drivers would be the default option and legacy bios have its death but it does not seem like it.

Edit : Is this shown Uefi on your windows?