Windows 8 - Legacy And UEFI Boot Methods
Jul 14, 2013
Windows 8. I am confused with the Legacy and the UEFI boot methods. The reason I am confused I think, is because I read to darn much on the Internet. One bit of confusion is with respect to changing from UEFI to Legacy. It would appear from some comments that if I do that, Windows 8 won't boot anymore. I would have to change back to UEFI for indows 8 to boot.
I also read that changing back to UEFI could be a major problem when trying to access the BIOS. No, I am confused. My ultimate goal is to set my laptop up to dual boot Windows 8 and Ubuntu. Like I have been doing for the last multiple years with XP and Windows 7.
Dell Inspiron 5721
Windows 8
Intel i7 @ 1.9 GHz
BIOS Version - Dell Inc. A06 2/22/2013
SMBIOS - 2.7
BIOS Mode - UEFI
Secure Boot State - On
Memory - 8 GB[/QUOTE]
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Aug 21, 2013
First, some context: I have a Dell Inspiron 15R SE that came with Windows 8.
I've managed to get a working dual-boot system with Ubuntu 12.10. I can't remember exactly how I done that, but I remember that I had to disable secure boot. I think that the boot configuration those days was:
Secure boot: DisabledLoad legacy option rom: EnabledBoot list option: Legacy
This "configuration" worked perfectly for 6-7 months.
Then, one day (last week, can't remember the exact day), when I was using Windows 8 the computer crashed. I hard-rebooted and got this screen:
After executed boot-repair from a Ubuntu LiveCD dozens of times I've decided to eliminate Ubuntu temporarily and focus to get a system with Windows 8 working nice.
Then I used my recovery DVDs to recover the system. Yup, Windows has booted. But when I restarted first time I got the same error. Then I, digging a solution, pressed F12 after a reboot and got here:
The highlighted option allows me to boot into Windows 8. So I went to boot options (F2) and changed the following configuration:
Load legacy option rom: DisabledBoot list option: UEFI
Now I can boot directly to Windows without need to press F12.
But my objective isn't complete. I want to erase all Ubuntu entries from the seconds image and restore the legacy boot from the first imagem (because they worked before).
I did two things:
I erased all partitions related to Ubuntu (root partition and home partition).I created a Windows recovery disk (not a system recovery disk).
I used the recovery disk to run the automatic recovery procedure (I forgot the exactly name). I've runned it at least 10 times with no success. Then I went to command prompt to try the famous triad: bootrec /fixmbr, bootrec /fixboot and bootrec /rebuildbcd. Still, no solution.
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Oct 27, 2013
So my computer is a Windows 8 Laptop, with UEFI on it..... I want to have Legacy instead of UEFI, and I was told on this site that I could do it, but I needed to reinstall Windows 8.....
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Nov 19, 2013
And if so, will it perform slower? Or only boot time will be affected? Any other disadvantage of doing so?
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Jan 29, 2014
Right before I performed a clean install of Windows 8.1 x64 on my Inspiron 3520, I switched to the Legacy BIOS *facepalm*.
When I enter the legacy BIOS and enabled "secure boot", I performed a restart that gave the following message "internal hard disk drive not found, to resolve this issue, try to reseat the drive. No bootable devices--strike F1 to retry boot, F2 enter setup menu, F5 enter PSA". Of course, when I go back into the BIOS and disable secure boot, it reverts back to legacy and boots up Windows 8 just fine. What I'd like to know is, how can I revert back to UEFI so I can change the boot-up option and perform a clean install under UEFI.
Making the Switch to UEFI | sepago
[URL]
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May 27, 2014
my graphics card, Nvidia GT650 is not ready for UEFI installation and I have no way to flash the bios. If I boot using legacy bios, install the card, then can I flash the card BIOS and then return to UEFI booting?
The card is currently not installed and I have no other system to use to flash the cards bios.
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Mar 1, 2013
So I fresh installed Windows 8 on Legacy boot, deleting all partitions even the factory restore partitions, everything. I realized late that the new trendy thing is to install on UEFI, however I'm having difficulty doing this. How exactly do I go about this?
My laptop has a 256 gb SSD mSATA where Windows and apps are installed, and a media HDD sized at 750 gb. I deleted every partition I had when I installed Windows 8 and made new ones for a fresh install, however I think this is preventing me from doing a UEFI install correctly..
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Oct 31, 2014
I cannot boot from my CD-DVD drive even after I turn OFF Secure Boot and UEFI. Then, yes, my machine DOES list my CD-DVD as a boot option, but when I actually try to boot from the CD-DVD, I get an error message. (Optiplex 7010 Mini-Tower with Win 8 Pro 64-bit, 8 GB RAM, 500 GB hard drive and an Intel i5 3470 processor. It has BIOS version A16.)
I have a good, detailed thread on this issue in Desktop Hardware Forum: [URL] ....
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Jul 29, 2014
I am having an issue with downgrading to Windows 7 and It's not nearly as easy as normally installing an OS. I get to the expanding files screen, and once the system reboots it goes back to the Windows 7 install screen. This is an issue, because it should continue with the installation.
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Nov 3, 2013
I have an older Dell laptop with no secure boot that has Windows 8.1. I shrank the partition and installed Linux for a dual boot setup. Normally I install the GRUB2 to the root of the Linux partition so I don't "see" the Linux installation at all until I use easybcd to create a boot menu item. Easybcd wipes out the pretty blue GUI boot screen and you end up with the black and white "legacy" menu. This was all expected.
Now the weird part. Sometimes when I boot the computer I get the black and white boot screen and sometimes I get the modern GUI boot screen. I prefer the black and white boot screen because the modern boot screen does a second reboot when you select a linux installation.
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Mar 24, 2014
After creating a UEFI bootable USB thumb drive with Rufus (using Windows 8.1 Enterprise ISO x64), for a Dell Optiplex 3010 (configured as UEFI only, no CSM, latest firmware version, Windows 8 installed), I didn't see a USB boot option, so I tried to add one manually. Unfortunately I erased the existing boot option (boot manager) by mistake. Although there were two boot options for PXE booting, the machine will not start anymore, even when there is an active WDS server on the network.
I also see Led's 2 and 3 lighting up, meaning according to the manual 'hardware ok but bios possibly damaged/corrupt'.
I understand I cannot start the machine from a bios boot disk because of GPT partitioning, and the UEFI USB boot disk I made might be corrupt (as it didn't show up as a boot option), however I don't understand why it won't boot from the PXE network card, as these boot options are still there.
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Feb 20, 2013
I am a C# developer. How to write a code to access files on windows 8 using WinRT native
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Sep 21, 2013
I have very little experience with Windows 8 until now. I am having an issue trying to run System Refresh or System Restore from the System Recovery Environment booted from the Windows disc. When I try to run it from the disc I already System Refresh says that the drive is locked. I tried System Restore and it said no OS's were found. I went into the CMD prompt and went to c: and can see the drive just fine.
Steps tried: running fixboot, fixmbr, rebuildbcd commands from CMDrunning dskchk /f (which forced a dismount)
I then read something about a non UEFI bootable disk couldn't access a GPT partition, which I think is the case here. So then I tried oscdimg to make my iso UEFI bootable (twice) and the UEFI Boot Manager still only shows 'Windows Boot Manager' at the boot menu. I even tried downloading an iso that was already UEFI incase I did it wrong and it still doesn't see it.
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Jan 10, 2014
Windows 8.1: HP Pavilion 2475ea Desktop PC.
I have Secure Boot turned off. I have Legacy Boot turned on, but do not think that is needed.
This link gives me instructions to boot from CD but they seem not to make sense from No 2... [URL] .....
In that at 5-6-7 it seems to require me to select the CD then boot to Windows from HDD then restart and do the same again, but this time select CD again, or something??
I expected to set the device, then restart the computer and it would boot from the device, not restart Windows as described. I was able to boot from a WinPE 4b CD.
I then decided to try changing boot order in the UEFI BIOS. From then on the HP (F9) described menu showed 'Windows Boot Menu' only under UEFI Devices. I could only boot from CD after putting the order back to 'Windows Boot menu' at the top of the order list; after which, as long as the CD was in the drive the (F9) list showed the CD drive as selectable to boot from.
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Aug 9, 2013
I have my main nbook (MSI GT683R-261CS), which have UEFI (AMI Aptio). However when I try to install Windows to (pre-created) GPT GUID sytem boot partition, Windows installation program kicks me to balls, that it can't be installed there.
In UEFI setup, there is no option to switch between MBR and GPT boot. Is there any utility, which will tell me, if my machine supports booting from GPT GUID?
I proceed in creating system boot GUID GPT by something like this:
Code:
rescan
list disk
select disk[=n]
detail disk
list partition
select partition[=n/l]
detail partition
[code].....
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Mar 18, 2013
I'm having nothing but epic failures when I try to image a Windows 8 box with Secure Boot enabled, that was installed using UEFI and has GPT partitions.
I can install using standard MBR, and disable Secure Boot and UEFI in the BIOS and I can restore that no problem.
However, I have been playing with Aomei, Macrium, EaseUs, etc to handle my image restores and not having any luck at all. Basically it's this thread that explains my issues almost perfectly.
Home user: Need Win 8 Disk Imaging solution with UEFI-compatible Startup Disks
I want to install Windows 8, using UEFI with Secure Boot, install patches, software, etc, then run sysprep, shut down, image and then deploy the image on the same make/model down the road.
The only real success thus far has been to load Windows 8, and then run imagex to capture a new wim and then install using that WIM. But that's a whole install, I'd rather just lay an image back down.
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Mar 13, 2013
Laptop: ASUS UX31A-DB71, latest BIOS: 218
Originally my laptop came with Windows 7 and when i looked at disk management my disks were formatted with UEFI schema. One of my friend gave me a UEFI bootable USB drive loaded with Windows 8. So, i thought why not give it a try. So, I created a backup of my OEM Windows 7 and saved the iso files in a seperate external HD (created twice just to be sure . Now, i decided to load the Windows 8. Booted into the BIOS and there is an option to select the USB drive along with the UEFI option for that USB drive. I selected the UEFI option but some reason it does not boot into UEFI.
So I decided to select the standard USB install and this option let me install windows 8. In the process of installing i formatted the partitions and made a single partition and installed Windows 8 on it. I am guessing now the drive is not GPT but MBR. I also noticed that his installation USB disk had an option to select either 32bit or 64bit of Windows 8... Would Microsoft create a same iso file with both versions? I am guessing he created the USB from a illegitimate source.
I am planning on purchasing Windows 8 Pro version as an iso but wanted to be confident that it would work with UEFI architecture.
Questions:
1. Why would the system NOT boot from UEFI?
2. If I download the legitimate iso from Microsoft and wanted to install Window8 Pro via UEFI, I am sure i would have to format my SSD to GPT and how would i go about formatting it during installation?
3. How would i create a recoverable USB for my iso image i created for Windows 7 via ASUS AI Recovery. Do I need to follow the same procedure as stated in creating bootable USB disk (i.e. FAT32 system) via diskpart utility?
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Jan 8, 2013
Can I change boot logo with my costumized logo in Windows 8 without UEFI system?
If you opens bootres.dll with 7-zip you find 6 files with this names: winlogo1.bmp,winlogo2.bmp,winlogo3.bmp,winlogo3n.b mp,winlogo4.bmp,winlogo5.bmp.
But i made a logo with the same dimensions but i cant save the image in dll. How can I do it?
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May 7, 2013
I was finally able to install windows 8 in uefi mode using a usb and was wondering how i could install ubuntu 13.04 to dual boot with windows 8 uefi? basically i dont want to disable secure boot nor any other feature in bios. If can go into youtube and search for "Dual-Boot Windows 8 and Ubuntu 12.10 by AvoidErrors" and tell me if that video is the way to install it.
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Jul 11, 2014
I recently bought a new SSHD for my laptop and after initial problems with trying to install Windows in UEFI, I turned to Legacy and that worked. But now when I change it to UEFI, it just comes up as "Operating system not found".
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Apr 28, 2014
understand how to boot from my usb or dvd with UEFI.
I think I enable csm under boot then got to security and disable secure boot.
Then I get lost. Should I save and exit then go back to UEFI settings and select my new device and hit enter to boot or should this have been done earlier before the first save and exit?
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Dec 19, 2012
On a new Win 8 laptop I can't boot from a USB flash drive or even a CD unless I turn off secure boot in the BIOS?
This surely can't be progress?
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Feb 11, 2014
How to A UEFI System using VHD. I was able to configure A UEFI system to boot from two different partitions one Windows 8.1 x64 & the second was Windows Server 2012 Rd. I want to do the same with VHD if possible.
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Jul 24, 2014
Yesterday, after many, many problems with my computer, I finally decided to reinstall Windows 8.1 Pro onto my ASUS X200CA netbook. However, after backing up and reinstalling the OS, I found that when I tried to disable "Launch CSM" in my BIOS, all of my boot options would disappear and my laptop would continually boot into my BIOS. When I re-enabled "Launch CSM", the boot options would reappear - however, it had not included the "Option #1 - Windows Boot Manager" that I had seen in my other installation.
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May 31, 2013
I recently installed windows 8 on my MacBookPro with UEFI support, but I can't enable audio. I know that apple use BIOS emulation for windows and the assign different Hardware ID's for devices.
With BIOS emulation ID is:
HDAUDIOFUNC_01&VEN_1013&DEV_4206&SUBSYS_106B5300&REV_1003
Without emulation ID is:
PCIVEN_8086&DEV_1E20&SUBSYS_72708086&REV_04.
I tried changing inf file and it detected the required audio card driver, but it shows that device cannot start. It's Cirrus Audio CS4206B (AB83) sound card, but without emulation it shows it as intel audio card. It would be easier to get back to bootcamp, but I really want to make this work.
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Jan 26, 2014
I have a Lenovo laptop that came with Windows 8 pre-installed. I decided I want to dual boot with XUbuntu.
I shrank my partition and left space for the linux distro. I installed xubuntu into the free space, and even set the bootloader installation to be in that partition as well.
Then after installation, I only get the GRUB bootloader. How to get Windows 8 back and I finally be able to boot into either OS.
However, I have lost the blue UEFI boot manager that Windows 8 should display.
So I get EasyBCD on Windows, try lots of options to regain an original boot manager. But instead of the typical blue UEFI screen, it created a black screen with my boot options (and the linux option doesn't boot from there).
So to summarise, my boot sequence is like this:
-Switch on laptop
-See GRUB, with default pointing to Windows. I am able to boot to linux from here.
-Click Windows and then see Windows Boot Manager (black) with Windows and Linux
-Click Windows and it boots. Click linux and get an error.
I have secure boot enabled, and I installed xubuntu in secure boot mode.
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May 9, 2013
My system specs are :
FX-8350
ASUS M5A97 R2.0 (UEFI motherboard)
CM thunder 500W
Radeon hd 7870
8 gb ram [800 mhz]
seagate barracuda 7200.12 1TB
and
seagate barracuda 7200.11 250 gb
I have installed windows 8 on the 1 TB hdd 200GB partition
The problem I am facing is: UEFI Boot takes longer time
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Nov 29, 2013
This brand new HP Pavilion Laptop had a UEFI Boot entry in the BIOS.
I used the HP Support Assistant to update the HP functions and programs, and it downloaded a new UEFI diagnostic which it installed as a partition on the drive - It was already there to begin with, but the new version removed the entry "UEFI Boot" from the Bios Boot Selections and now it just says "OS Boot Manager"
Therefore, when I try to use "Advanced Start" options from PC Settings, I no longer get the options to go into Safe Mode or the other recovery options, the system just reboots and F8 does absolutely nothing.
Other than setting my BCD to Legacy Mode, I cant get this into Safe Mode.
I burned the recovery disks which were 6 DVDs, will that put the original OS back in? I do have the free 8.1 update available, maybe the new UEFI only works for 8,1? I'm just trying to figure out how to put the UEFI Boot option back in, the original UEFI tool cannot be downloaded from HP.
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Sep 19, 2013
I've made a UEFI Win8PE by WADK , then burn it to a CD. I boot normal and I can see X:WindowsSystem32.
I use EasyBCD to [Add New Entry] to append new boot item to existing Windows 8. The boot menu becomes like this :
Windows 8
Win8PE
But the Win8PE fail to boot with error message like insert Windows disc again ...... in the primary black and white screen.
Should I not to use EasyBCD to [Add New Entry] ? As I do the same thing in BIOs + MBR harddisk that booted perfect. In UEFI + GPT partition , do I better not to use EasyBCD , instead to use BCDEDIT , if so , what's the command line to do this with bcdedit ?
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Jul 26, 2014
I was using my laptop with everything going smoothly. USB port with adapter and CF card inserted. Ear buds in audio port. I decided to close the laptop which automatically puts the system in hibernate (or whatever it does when fast startup is active). Everything looked good. Now when I come back to it, open the lid and begin to startup from hibernate state it gets hung in the bootup and will not proceed. I have tried holding the power button to shut down and then restart -- no joy -- comes back to the same hung screen. Have tried holding various escape keys with startup -- no joy -- back to that same hung screen. Is there some way to bypass the hyberfil file which is probably corrupted, and get back to a full cold boot and restart from scratch?
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Jul 30, 2013
When I access my UEFI during startup, the Boot Priority section is either empty or shows unrelated drives attached. I can select the drive from which to boot by clicking on the Boot Menu, then clicking on the drive desired.
I purchased a new Intel SSD and installed it as the "C" and "D" drives and was happily booting from that SSD until I added new HDDs to my system. I now have four HDDs plus the SSD. One of those HDDs still contains the original Root C bootup and Windows 8 system on it. I frequently now find the system, reason unknown, may choose to boot from the HDD rather than the SSD.
I cannot find the method for directing the UEFI bootup menu/priority steps... my goal is to have the computer boot from the SSD, which if it were to fail, then would secondarily boot from the HDD original Root C.
The computer arbitrarily changes the SSD from drive designation "C:" to "J:" and the HDD to "C:"... how to specify the SSD as the "C:" unless it fails or is removed? the computer system info:
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