Hello After i updated my BIOS, the entry for Win8 UEFI boot is gone (i think the nvram was cleared), i'm still able to boot it like a normal HDD, but i would like to readd it as an UEFI option. I did try to use windows build-in auto repair, but it didn't detect any problems... Does anyone know how to readd Windows 8 as a UEFI boot option? Thanks in advance
Your install must of been in Bios mode. If it was EFI then it wouldn't boot. In EFI, the system files are in a EFi partition & no partition is labeled active. An active partition is needed for bios mode...
The board is a GA-Z77X-UD3H It says that the active partiton is a 350 MB system reserved, so that means it's installed in bios mode? Is that because i installed it from USB? Or maybe because its a RAID 0 setup? I just thought that if you had a UEFI boot option, this would be EFI mode And i had one of those but it disappered after a BIOS reset.
350MB active is a typical bios/mbr install. GA, is that Gigabyte? Anyway, to install in UEFI, insert your usb key, boot the system, press your function key for boot menu (F12 I think). Your key should be listed twice, 1 for bios/mbr the other uefi, select uefi. at the 1st screen you can press SHIFT+F10 to go to command prompt. Run diskpart to wipe your disk & convert it to GPT. ie, sel dis 0 cle con gpt exit diskpart, exit command prompt, continue install! Good luck!
With UEFI you can boot from 3TB+ Hdd. Non-UEFI you will get max 2TB & the remainder is unused. Not sure what else. Same boot speed last I tested...
Thanks Flipp3r. I'll try it when Win8 is released, as i'm running the evalu right now, and i will have to reinstall anyway when it's released