UEFI Partition Wiped After Windows 7 Installation
Jun 27, 2014
I got a (at the time new) MSi laptop several months back with just a regular Windows 8 Core x64 on it and a UEFI boot system (or whatever is the name for "BIOSs"). At some point I had problems with the settings - I couldn't open any of my computer's settings - and I researched long and hard to no avail.
So I installed Windows 7 32-bit (the only disk I had). Now, I'm trying to upgrade to Windows 8.1 Pro. I noticed that after the installation of 8.1 Pro my system was still running in 32-bit, so I made a bootable USB stick with the retail version of Windows 8 Core with no key just to get the system back to x64. It worked just fine. I cannot, however, boot in UEFI mode. I believe the partition got wiped somewhere in the Windows 7 installation.
Whenever I enter UEFI by pressing the DEL button (I cannot see the UEFI firmware settings tile under the Troubleshoot option) I see the boot mode is LEGACY and when I change it to UEFI, save and reset, it doesn't boot, giving me a "No media found" error. I don't care about my settings/files as long as I get UEFI back with Windows 8.1 Pro running. My next attempt would be to try and install 8.1 Pro from USB stick, wipe all the partitions and hope the installer will create new ones. The reason this would work when it didn't before is because I had the OS running in x86 not x64 (which UEFI doesn't support). So maybe now that the system is back to x64 the Windows installation will restore the UEFI back to its original state.
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Apr 18, 2014
I have managed to wipe my Windows partition while installing the latest release of Ubuntu (v14.04). I've had my HDD split in two with both Windows 8 (updated to 8.1 Update) and Ubuntu and dual-booted between them for over a year.
During the Ubunut install it informed me that I had a previous version of Ubuntu and would I like to wipe the partition that it occupied and install cleanly. I chose that. It also offered a chance to use free space. Now, why I accepted that I don't know but the definition of free space seems to include any other partitions on the drive and didn't warn of this either!
The upshot is that I now have a 1TB drive with no Windows on it. I've lost all my email, pics etc etc.
I tried using my rescue DVD that I created from within Windows and at 29% I am asked to insert the second disc. I don't have a second disk. I had to force my laptop to power down in order to do anything. In order to get online I ended up installing Ubuntu again and it definitely shows no Windows partition.
I've already ordered a retail copy of Windows 8.1 and I'm hoping that I can install this with no issues on what is effectively a clean drive. Am I correct in that assumption? Is there anything else I can try that might rescue it?
I have a Dell Inspiron 17r SE that is out of warranty so no support from Dell.
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Jan 28, 2013
Is it possible not to have the partition "recovery"?
Because if you look at the two tutorials:
- UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums
- UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with
In the tutorial to install Windows 7 in UEFI, there is not that damn partition recovery, while in the tutorial for Windows 8, we can see it.
When I install Windows 7 (MBR mode), I avoid this partition "recovery" by creating a partition with a name before installation. I install the OS on it and everything is fine, no partition "recovery" But here, since one must delete all partitions, If I create a GPT disk with a partitioning tool before installing, is that it might be appropriate?
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Jul 9, 2013
accidentally i delete my efi partition. now i cannot boot up to windows 8
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Dec 4, 2013
My troubles began just after an amicable game of Starcraft with my siblings (Starcraft 1 running through chaoslauncher in window-mode and LogMeIn Hamachi, on Windows 7 at the time). Apparently I closed out of the application too hastily, since my system seized and displayed a lovely and very informative BSOD (STOP: 0x00000116; nvlddmkm.sys).
This BSOD would return every time I would boot Windows 7, sometime during the loading screen. However, I could access safe mode just fine. I did some research and decided to reinstall the graphics driver through safe mode, but it didn't seem to work. Since this PC is primarily for games and all my important documents/media were synced with my laptop, I decided to wipe the HDD (using DBAN) and take this opportunity to upgrade the OS.
I got an .iso of Windows 8.1 from my university and created a bootable DVD using the Windows USB/DVD boot tool. Now when I attempt to boot it in my PC, the blue Windows 8 icon appears for about a minute and then the system restarts. I've put the boot disk into another computer and it won't even display the Windows 8 logo. It simply skips the disk boot even though I select 'boot from disk.' I've tried all of this with about 5 different DVDs using ImgBurn as well as the Windows USB/DVD boot tool.
Strangely, my Windows 7 boot disk loads just fine on the wiped PC, to the point where I can select the language, etc. and control the cursor.
Is it possible that the Windows 8 boot disk loads a display driver that is incompatible with my GPU? Or is it more likely that the disk burner I'm using is garbage? Could any tools on something like the Ultimate Boot CD provide any useful information?
COMPUTER INFO
PSU: 600 Watt (OCZ600MXSP)
Mobo: MSNV-939
CPU: AMD dual-core, not sure of exact model, couldn't find an invoice for it and my HDD is wiped
GPU: Palit 9600GT sonic 1GB DDR3
RAM: 4 sticks of Kingston ValueRAM 1 GB 400MHz PC3200 DDR DIMM (KVR400X64C3A) - might have 2 sets of 2 different 1GB models, but 2 of the sticks have heat-sink covers that I couldn't remove
HDD: Maxtor 6G160P0 160GB ATA133 7200rpm 8MB Hard Drive
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Jul 7, 2014
I wiped my pb eastnote TE. I was restoring it to factory settings, i thought id just have put in my usb and it would reinstall everything for me, but it hasnt.. what to do, error mes im getting it ;there was a problem while resetting your pc, all I am getting is a blue screen, but the options they are giving me are not working...
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Aug 31, 2013
I would like to know how to install Windows 8 from a hard drive partition, so that is much faster than installing from a USB ... I've seen guides on how to do, how bad MBR, and I want to know how install W8 from a partition GPT / UEFI.
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Nov 9, 2013
I have a Samsung Ultrabook series 5 laptop..some couple of month usage i completely remove my hard drive and change the windows 8 to windows 7..when i use windows 7 i realize windows 8 is much better then windows 7 so again i clean install of windows 8. i boot drive in PXE UEFI Only Mode. Some reserved partition created also 300MB Healthy Recovery Partition is Created.when i install a Samsung Recovery Solution Software it Says "Recovery Partition Does Not Exist"..What do i do.also when i refresh Pc it gives me Error "The Drive is Locked Where the Windows Installed" I want to make my Laptop like 1st time it was...
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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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Jan 30, 2013
I have win 8 pro installed & two HDDs with two partions each , I want to migrate the boot partition to another partition on the second drive .
It would have been easier if i would have just cloned the complete drives but one of the partions on the 2nd drive has data which cannot be deleted .
So I have Drive
1 - Partitions C: ( boot partition ) & D:
Drive 2 - Partitions E: & F:
I want to remove Drive 1 from my PC so i want to copy C: to E: then remove drive 1 & boot from E:
I tried "Easeus todo backup" , did not work, it does not make the copy bootable , to make it bootale the whole drive has to be copied .
I tried making an image of C: using Windows 8 inbuilt backup feature then removed drive 1 , installed Windows 8 on E: then tried restoring the image of C: but i got some error.
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Dec 13, 2013
All my partitions got wiped out and it seems as if I have no existing installation of Windows 8 on my laptop anymore.
How can I reinstall my Windows. Finally, where is the product key for the Windows 8 written?
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Nov 25, 2013
I have a Dell Inspiron 7720. I have created an uefi bootable usn flash disk with rufus 1.4b
I'm trying to boot from it so i can create a Windows 8.1 uefi installation and the problem is that the usb flash disk wont boot.
I have secure boot enabled and legacy option rom disabled.
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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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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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May 4, 2014
I am trying to make a DVD with UEFI/GPT support for Windows 8
I have an ISO from MSDN - Windows 8.1 Pro VL (x64) - DVD (Danish)
File Name:da_windows_8_1_pro_vl_x64_dvd_2971937.iso
[URL] .....
The SHA1 for the ISO matches the one on MSDN
SHA1: 3142B1DCBDFFC7E46ACE0E89BDB858D2C9B1F233
I used Hashtab v.5.1.23 to verify [URL] .....
If I burn the ISO and boot from the DVD created, it boot just fine in UEFI Bios.
But if I change the ei.cfg file to one of these:
[EditionID]
[EditionID]
Core
(Blank) to have the choice to install Core or Pro
[Channel]
[Channel]
OEM
Retail
[VL]
[VL]
0
0
It will not boot in UEFI Bios, it work just fine in Legacy Bios. I can use the program Rufus [URL] .... to create a bootable USB drive, this works perfect. But I would really like to know how to make this work on a DVD. Or/and what I am missing.
This is the original ei.cfg file from the ISO.
[EditionID]
Professional
[Channel]
Volume
[VL]
1
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Jul 3, 2014
So I was getting bsods before and had my HDD wiped. when attempting to install windows 8 I get a bsod. Not sure which as it is too quick to read. I have flashed the bios to the most recent version. But it still bsods. I tried using a known, good working HDD with windows installed and it still caused a bsod.
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Jun 30, 2013
I have a Lenovo B575 laptop that is not UEFI capable; however, I have downloaded the x64 Win 8.1 ISO, burned it to a bootable DVD and a bootable USB drive and tried installing Windows 8.1 using a boot from DVD and also a boot from USB drive, and neither method has resulted in a successful installation. The root cause of the installation problem is that Windows 8.1 is intent on creating an EFI partition structure on my non-UEFI machine.
So, I end up with a 300MB Recovery Partition and a 100MB EFI Partition which doesn't work well on my machine. Now, during the installation process, I opted to delete all existing partitions and allow the installation to properly partition the hard drive for installation; however, I knew I was in trouble when the machine started hanging during reboots.
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Feb 12, 2013
I have made a clean install of Windows 8 using USB and UEFI. Somehow it seems the instalaltion is not quit right of what I have read... Have attached picture of the Diskmanagement (OS is Norwegian by the way).
Compared to this thread: UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with for me something is missing/wrong.
I have a laptop with one SSD and two internal disks. Both internal disk were removed before the installation, and connected and formatted after finished the installation.
It can me mentioned that I downloaded the OS, saved it as .iso file, then copied onto the USB disk. Then connected into the laptop and booted from USB/UEFI.
I did not follow these steps: UEFI Bootable USB Flash Drive - Create in Windows
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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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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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Dec 4, 2012
Have any of you successfully installed Windows 8 with UEFI on a RevoDrive X2 (PCI-E express card)?
It starts the installation just fine for the RevoDrive X2 after loading it's drivers, but on first restart it...:
No boot drive found.Manually select to boot from the RevoDrive from the boot menu (F11), and it just restarts the installation again from scratch.
It installs and runs just fine with legacy BIOS (MBR) for the RevoDrive X2.
It also installs and runs just fine with UEFI on an internal SATA2 HDD.
Things I've done:
Bootable Windows 8 USB formatted as FAT32 w/EFI folder in itEnabled wake on PCI-E/PCM in UEFIBooting from USB from boot menu (F11) and not set to always boot from USB.
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Jul 27, 2013
I have just recently bought a new computer. If I knew I was going to have this issue I probably wouldn't have bought a 4TB HDD but anyway.
What I have done is read the article (this is where I found out I couldn't install to the 4TB HDD in the first place) on how to install Windows in UEFI format. I have created a USB flash to do this but still my HDD partion is only showing up at 1.6TB. It is setup as a GPT file format as it gave me all the prompts and created the Recovery, system partitions etc. How do I get this to work so when I do the install it shows up in the first place as the 4TB partition or at the end of it all is still not possible?
What I will be doing is installing Windows on this 4TB patition and then using a 256GB SSD in SSD Caching.
Am I better off getting a 1-2TB drive and installing normally instead of wasting my time or can this be done?
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May 31, 2013
On my computer there is a pre-installed Windows 8 which works fine for UEFI boot (Secure boot not necessary).
Now when I switch in UEFI setup at boot time the UEFI mode into the CSM (BIOS) mode and restart then Windows 8 is not starting any more.
As far as I find out an UEFI-based Windows 8 can only boot with UEFI mode enabled.
So my question is: Can I turn an existing UEFI based Windows 8 installation into an CSM/BIOS based installation (=a Win8 which boots successfully even when I enable CSM in UEFI setup) ?
If yes: How do I do that?
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Feb 17, 2013
Windows 8 clean install crashes on first screen
Side note - I succeeded on installing Windows 8 on that particular laptop using UEFI, but NOT legacy. No matter what I tried it failed.
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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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Jun 13, 2013
Question: How would you approach this migration?
I just bought a copy of Acronis True Image 2013 with Plus Pack. It appears that this is all I need as True Image will install the new motherboard drivers as part of the migration process. But do I stay with MBR or move to GPT?
Presently both Win7 (on a 120GB SSD drive) and Windows 8 (on a different 120GB SSD drive) are both MBR format. I don't want to start over from scratch. That's why I bought the Acronis 2013 with Plus Pack.
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Jul 21, 2014
I'm trying to install windows 8.1 to an external hard disk (solid state drive 128 gb usb3).
I've tried easyUFEY WinToUS creator and AOMEI Partition Assistant Standard(Windows to go) with no luck.
My bios has UEFI option only(no legacy). On my old laptop it works just fine(I had the legacy option) but now, I cannot do that anymore.
I'm pretty sure it's a bios boot issue and I don't know how to fix it. I've tried using GPT partition instead MBR, Still nothing.
The laptop is a sony vaio duo 13 and I have no legacy option in bios
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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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Aug 10, 2014
I installed Windows 8 with UEFI on a GPT SSD like the tutorial on this very forum states, but I ran into an issue when I plugged in my secondary HDD (1tb MBR?). It won't boot even if I make sure Windows Boot Manager is the primary boot option. What can I do about this?
If I unplug the drive, it boots fine. If I plug it back in, it stops and Windows tries to repair itself.
Apparently if you're using Win 8 with UEFI, you can't have a 2nd drive that uses extended or logical partition. Since I had Ubuntu on the 2nd drive (logical) it wouldn't boot. I haven't done it yet, but If I delete the partition it should work just fine. I created a bootable usb with Gparted and will fix it later.
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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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