Setup Installation :: How To Reinstall Windows 8 On UEFI From Windows 8 Legacy
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 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
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Feb 17, 2013
I would like to reinstall Win 8 on my ASRock UEFI motherboard in the UEFI mode. I have Win 7 OEM and the downloaded Win 8 Pro upgrade. I have the Win 8 Pro upgrade burned to an ISO disc. I also have the hard drive backed up to Acronis 2013 and have an Acronis WinPE rescue disc to boot with to restore.
Several questions.
(1) If I convert to UEFI and format the drive to GPT, will Acronis restore to the GPT (from MBR)?
(2) If Acronis won't restore, will converting to UEFI/GPT affect installing or activating the Win 7 OEM and/or the Win 8 Pro upgrade (I assume I'll have to install Win 7 and then upgrade to Win 8).
(3) Will a UEFI system read other hard drives that are MBR formatted?
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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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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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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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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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Dec 27, 2012
Let's say your computer comes with Windows 8 (not 8 Pro) preinstalled, using a SLIC and not a product key. Yu decide you hate the OEM crapware and want to do a clean reinstall. Bt you don't have reinstallation media, or the media includes the crapware.
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Sep 26, 2013
Having previously upgraded to Windows 8 I restored the factory installation of Windows 7 prior to warranty repairs to my PC. Now that the repairs are satisfactorily completed what are my best options in upgrading again? On the one hand I could go ahead with the upgrade now or on the other should I wait until Microsoft have completed development of Windows 8.1?
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Jul 7, 2013
i have a newish samsung laptop that came preinstalled with windows 8 but i need to format the stock hard drive and i was wondering how i would reinstall full windows 8 without a product key.
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Aug 21, 2014
I have Windows 8.1 installed and then I installed Windows 7 afterward and now the system is using the Windows 7 bootloader as opposed to the Windows 8.1 bootloader. What I want to do is get set the Windows 8.1 as the default bootloader.
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Apr 27, 2014
my laptop came with a pre installed windows 8 having gpt format but i downgraded to windows 7 and reformatted it to ntfs,.. now I want to go back to windows 8 and format the drive to gpt again, but the external hard drive that contains the backup image was corrupted. What should I do?
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Apr 9, 2014
I have T430s my laptop got licence in UEFI of windows 8.
1. How can I download legaly windows 8 and reinstall windows?
2. Can I download windows 8.1 install without taping serial and activate afterwards?
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Jan 27, 2013
Just a quick question about UEFI installation. I've got the Windows 8 Pro DVD but I lack USB Flash Drive 4Gb, is it possible to install Windows 8 with UEFI support with the DVD support or as written in the tutorial the USB Flash Drive is mandatory?
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Jun 24, 2013
I got windows 8 online and I went to try and use the re install feature but its prompting me with this "Some files are missing. Your Windows installation or recovery media will provide these files" But since i got it online I don't have the CD but I do have the product key
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Jul 8, 2013
I want to increase performance on my pc, and i would like to rest to factory settings, I did not create any discs stupidly at the begging
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Sep 8, 2013
Im reinstalling windows 8 on my just formatted hard drives since I've filled up 1.5 terabyte with shit. (Not porn) and now I can't install it again?
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Jan 8, 2014
I build my own desktop. I first had Windows Vista on it, which I bought on a DVD. I then skipped Windows 7 completely, but later upgraded to Windows 8 when Microsoft had a promotional period for it early in 2012 when it just came out.
Now I'm replacing the motherboard and also swapping the HDD to SSD, and I'm curious. Can I still install Windows 8 as an upgrade like I did before? And if yes, then how?
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Jul 9, 2013
I have never dabbled in the installation or reinstallation of Windows 8 so far, but I am looking for information on how to re-install windows 8 onto a desktop computer that does not come with restore discs.
Now is it true that the CD-Key is stored on the BIOS? Or was that just a rumor that was floating around, I have never had true clarification on that.
If the answer is no, where would I find the CD-Key at that point?
Basically it is for a desktop computer that is no longer functioning and there were no restore discs created during original operation of the computer.
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Sep 15, 2014
I accidentally reinstalled Windows 8.1 on a MBR partitioning style. I'm debating whether to start over and make sure I do it properly as GPT. I haven't installed any programs yet...is it worth it? (my MB is recent, supports UEFI, and im installing to an SSD).
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Dec 19, 2013
I tried to reinstall windows 8.1 and it deleted my files I used it as a back up drive on my windows 7 pc I had 2 drives one with 7 the other 8 it ran fine when i set it up and used it a few times but the last time i was trying to boot it. It crashed so I tried to reinstall windows files but when it booted back up my files was not there i did not format to HD just reinstall windows i have the windows old files but my files are not in them i can run recovery software and see my files but before i do any thing that i can not undo I want to know is there a way to get my files back i have used recovery software in the past and only got back a few files so I am trying bypass that if I can.
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Nov 18, 2013
Is it possible to install Windows 8.1 as Legacy with MBR? Or only as UEFI with GPT? I'm kind of confused with all this UEFI business, I always used MBR in my Windows installations. Also, Truecrypt does not support UEFI, so if installing Windows 8.1 I should do it as legacy.
Also, how can I control during the install process if I want to set my system installation as UEFI or Legacy?
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Aug 20, 2013
I have an Acer Aspire 5745G-644G50MNKS notebook with preinstalled OEM win 7 home premium.
Specs as following:
Core i7 640M Processor (2.87GHz, 4MB L3 Cache)4 GB DDR3 RAM500 GB HDD15.6" 16:9 HD LED DisplayDVD RW1 GB VGA (NVIDIA GEFORCE GT 420M)WIFI / Bluetooth / Card Reader / Web Cam
I'm wishing to update my system into Windows 8 Pro or Enterprises. But unfortunately my model isn't appears in Acer's Windows 8 Eligible Models list or Affected Models List.
I think my system has more than enough performance to run Windows 8. But my bios don't have UEFI support. So, i just wanna know will my computer be able to run Windows 8 without any troubles without that secure boot option.
I"ve run Windows 8 Upgrade Assistant Tool in my system and it says everything is okay except Secure Boot option. also I'v checked individual hardware vendor sites for the latest drivers for windows 8. Most products has the drivers, And the current drivers also compatible with Windows 8 according to the upgrade assistant.
What should i do so? Will the win 8 upgrade useless in my system? or it will be better than the current win 7?
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Oct 27, 2013
I purchased a Lenovo laptop with Windows 8 Pro preinstalled. It came with 500 GB HDD. I changed the DVD Rom with SSD/HDD tray to use for additional drive. I put an SSD in there and installed Windows 8 on it using a USB Recovery Drive, which I don't have anymore. So my current setup looks like this:
After upgrading to Windows 8.1, the license of some software I'm using got messed up and I couldn't manage fixing it, so the only option I've got left is to reinstall/reset Windows. But since the Recovery partition is on another drive, when I go about creating a Recovery Drive, the option "Copy the recovery partition from the PC to the recovery drive" is greyed out. I've got stuff on my HDD, which I can't currently backup so I don't wan't to format that drive. I'm perfectly fine with formatting the SSD, that's what I want.
How can I reinstall/reset my Windows? The only option I see is to install Windows on the Hard Drive (by doing a backup and formatting it first), and then create a usb recovery drive and reinstall again on the SSD, but that's a lot of hassle and I'd need to find an external hard drive for the backup.
I intentionally left the Hard Drive in the original bay (as Disk 0) because of the better protection against falling compared to the added bay in place of the DVD drive.
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Jul 13, 2013
I will need to do a complete system recovery. My computer originally came with windows 7 and then downloaded and installed windows 8. I have my product key. When I downloaded windows 8 it gave me the option of burning a copy of windows 8 to a dvd, however I did not do that. Whenever I do a system recovery will I be able to get windows 8 back without having to pay for another download?
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Jun 17, 2014
I did a factory reset on my windows 8, and it messed up, not completing. so it is now stuck on a cycle of 'preparing automatic repair' and 'diagnosing your pc'.
And I today recieved the windows 8 cd to reinstall the os.
But after I've chosen language, I get error message saying I'm missing 1 of the media drivers.
Computer: alienware m14x r2 laptop
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Sep 15, 2014
I do this day in and day out with Volume Licensing but never with OEM installs...
A user that works at our company brought their personal laptop in, the hard drive failed hard drive tests so we have put one of our spare hard drives in and now we need to re-install Windows 8 x64.
Where do i get the installation media from if the users doesn't have a disc? Is it possible or do we need to order a disc?
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Feb 8, 2014
My Boot loader on my Desktop crashed so i formatted the drive as it was my only option. I'm attempting to reinstall windows...
-so i downloaded windows from: Upgrade Windows with only a product key as i was instructed to by the 1800 Microsoft support staff.
-made a usb installation media and used my Original Product Key. i did this on my laptop. and then once the installation media was finished i plugged it in to my desktop. it didn't work it said the product key was invalid and to please try again.
-so i called them back and the ended up giving me a new product key. i tried that with them still on the line and it didn't work their suggestion was to recreate the installation media.
- i did that this morning because i was irritated enough for one night. any way it didn't work, i noticed one thing. at the end of the creation of the installation media it keeps giving me my old product key to use.
Just to be clear because I tend to ramble a lot. this old product key is the one that i got from Microsoft when i purchased windows 8 pro. i purchased it online at microsoft.com when windows 8 first came out. i have no original installation disk because i originally downloaded some software from their site.
I dont want to buy a new copy of windows because in my opinion i shouldn't have to. What i would like to figure out is how do i create instalation media with the new product key that they gave me? every time i reinstall the install windows 8 file from Microsoft.com it for some strange reason keeps giving me my old product key and i cant seem to be able to change that.
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