Deleted EFI Partition Now Can't Boot
Mar 11, 2014
I recently partitioned my Asus ROG G750JW into 2 main parts: One 300GB for a mackintosh, and one 6** (remaining space) for windows 8. That worked fine, until I tried to format what I thought was random partition with a size of 128MBs. I believe this to be the EFI partition, and you know what that does. I cannot boot to windows 8 or mac, and windows boot manager no longer shows up in BIOS. I have a windows 8 reinstall disk and the hackintosh install disk. When trying to refresh from the windows reinstall disk, I get an error saying that the disk is locked. What I need to know is if there is any way to restore this without erasing my hard drive. I do not have access to a windows computer (I can if I have to, but it wouldn't be ideal), but do have access to a mac. I don't have restore points, even if I did they are on the now one-huge partition, which by the way is listed as MBR format.
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Jul 6, 2013
I accidentally deleted a partition and overwrote it. Am I dead or can I restore it?
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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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Feb 13, 2014
I was using win 8 which was original came with notebook , then I installed Windows 8.1 (not upgrade from Store , just from .iso packet ). Because of some errors I re-installed another Windows 8 . iso and now I can't download Recovery from SW Update .It says recovery partition doesn't exist.I was able to use that before. How can I re-create my recovery partition again?
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Aug 17, 2014
Misread the drive label and deleted the partition on an USB external 80GB SATA drive. Nothing else has been done to the drive.
I did this when using Macrium Reflect Rescue disc.
I know I've seen mention of a program that can recover the partition table but I've not found it yet.
I tried EASUS Data Recovery Wizard but that didn't do it. I thought maybe Paragon had something but I've not had any luck so far.
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Jan 17, 2014
I am using windows 8.1. I have deleted my recovery partition by mistake. Is there any option to create again the same?
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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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Jan 25, 2014
I have a server with Windows 8 on a 360gb sata drive with 4 1.5TB drives as storage, which i had joined under Windows 8 to be seen as one drive. The system had been sluggish lately so was going to replace the 360gb with a ssd which i had used b4 on my laptop, so when i had it connected and started to install.
I seen 5.8 drive and ssd 12ogb drive and a few small partitions i deleted main partition on ssd and few other small partition which i thought was on the SSD but one was related to the storage drives and they are all screwed up now and when i connect the original Windows 8 os hard drive it doesn't boot anymore.
My question is whats the best way to proceed to save all the data on the hard drives nothing was formatted on theses drives.
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Jan 22, 2013
I formatted a HD that had the bootmanager on it. The Win 8 disc can't repair it. I'm also getting a message that my C: drive is locked.
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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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Sep 15, 2014
I accidentally deleted my Fast Boot boot options and when I enable it my laptop restarts and shows the BIOS, without booting into my system(s). However, when I enable CSM boot it gives me option of booting into my systems. I want to restore my Fast Boot options so my laptop boots up faster and basically because my laptop is made for Fast Boot.
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Mar 2, 2014
I used Acronis to delete all partitions on my Surface Pro. So there is no recovery, C drive, nothing at all. Just a blank SSD drive without any partitions. Now the Surface Pro refuses to boot to any of my USB sticks so I can clean install an OS like I wanted to do. I've verified both of my USB sticks are boot able, as I'm able to boot my desktop computer to them in order to install an OS. But when I try to boot the Surface Pro Gen1 to the USB stick, I get a quick squiggly screen and then I'm dumped right into the system BIOS. I've made sure to power off the Surface Pro, then hold down volume- while pressing the power button, then releasing volume- after seeing the Surface splash screen. But it never goes to any sort of boot menu or anything. Just takes me right into the EFI BIOS.
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Dec 28, 2012
I bought a Windows 8 laptop, ASUS Q500A, and reformatted it with Windows 7.
I went into the BIOS and used "Restore Defaults" and now all Boot Option Priorities are deleted.
Each time I boot the laptop, it automatically goes to BIOS (or UEFI).
I tried inserting the Windows 7 disc so I can access Startup Repair or Command Prompt but it freezes before it could get anywhere even when I tried it with an external CD/DVD drive.
I cannot get the laptop to boot to the hard drive or CD drive at all,
how I can reset the boot option priorities so it will be boot to the hard drive again.
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May 31, 2013
Currently on my (new) computer there is only a (pre-)installed windows 8
In detail there is a 300 MB big active system partition (I guess with the Win8 boot manager).
and a 200GB parition with Windows 8
Now I want to create a new partition (with 50 GB) and install Windows 7 on it.
Is the Bootmanager on the 300MB partition capable to recognize automatically the Windows 7
system on the new partition?
Or do I have to install the old Win7 Bootmanager?
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Mar 16, 2013
I have a second partition that I would like to install windoiws 7 pro on, but am not sure how to go about it, and once I do install it, how do I boot to it?
So, my questions are- How do I install Windows 7 on this second partition how do I boot to it
I know on my mac with boot camp I just hit the alt button and I have the choice of which OS to run.
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May 16, 2014
Just installed 8.1 on one of my machines. The 100 mb "system reserved" boot partition is showing up as drive E in the drives. It does not show on my other Win 8 machine. Why would this be? Is there some way to hide it?
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Oct 19, 2013
I am unable to move my boot data to another partition. Please have a look at the following picture-:
As you can see I have created a separate a partition before my C drive and formatted it.
I have used the following command to copy the boot data from my C drive to the System partition(S:)
bcdboot C:Windows /s S: /f BIOS
But as you can see C drive is still marked as "System" which means my PC isn't actually booting from drive S:.
How do I force my system to boot from drive S: and not drive C: ???
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Nov 2, 2012
what partition does Windows have boot files?I messed my system up and I am in Linux and have the option to make either my:
1-System reserve or
2-Windows installed partition (C: )
to make as primary bootable. Which one should I make the primary bootable?
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Sep 15, 2014
Lenovo g505 History - What I did so far, is further down Computer went badly wrong and would not Boot into Windows (belongs to my mates 11 year old) I decided to a Factory Restore it seemed the best Option as my knowledge stops, til now, at Win 7 I did it, but it doesnt Boot into Windows CURRENT I have the HDD connected to another computer which is running Win 7 I can now see that it did indeed do a Restore to the System Partition Pic Shows Disk in Disk Management
Pic shows content of Windows8 Drive
Pic shows content of the Windows8 Windows Folder
PDF of the 3 Pics - easy to read detail
In Disk Management I see 7 Partitions Now I think I understand what the Problem is - ?too many Partitions? But I dont have a clue how to Resolve it correctly My inclination is to Run DiskCheck from Win7 on the HDD but I am not sure if that will work on Windows 8? same with FixBoot if it is Possible? The LENOVO H Drive has 3 Folders with Data in it Lenovo & Drivers & Applications
HISTORY
I did the Restore
took 3 hours
but then said Success
Option to Reboot or Shutdown
Chose Reboot
eventualy Booted to a Windows Pale Blue screen with the Cursor half hour later, the Box came up to start the Restore again I did it, same as above time and Result so this time I chose Shut Down Started - Logo for long time then loading Files and back at the Box to Start Restore again
I have since tried booting with Default Options UEFI and Legacy in the BIOS In the middle of all this, as it is about 4 hours to do the restore.
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Nov 13, 2013
I just purchased a brand new laptop (Lenovo s400) with Windows 8 (which was promptly updated to 8.1) and since I don't like having OS and personal files on the same disk, I used Partition Master for creating a new Partition to keep my files.
After PM rebooted the system, Windows doesn't boot and shows an error coded 0xc0000225. Lenovo adds a button to access System Recovery, but again I get the same error. As far as I can remember, I've never seen a recovery partition and no disks were included (Should've created a recovery USB drive as soon as I took it out of the box).
I would like to emphasize that this hard drive wasn't formatted, just re sized.
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Sep 15, 2014
Lenovo g505
History - What I did so far, is further down. Computer went badly wrong and would not Boot into Windows. I decided to a Factory Restore, it seemed the best Option as my knowledge stops, til now, at Win 7. I did it, but it doesnt Boot into Windows.
CURRENT
I have the HDD connected to another computer which is running Win 7
I can now see that it did indeed do a Restore to the System Partition
Pic Shows Disk in Disk Management
Pic shows content of Windows8 Drive
Pic shows content of the Windows8 Windows Folder
PDF 3 Pics to read Details
Lenovo hdd.pdf
In Disk Management I see 7 Partitions. Now I think I understand what the Problem is - ?too many Partitions? But I dont have a clue how to Resolve it correctly. My inclination is to Run DiskCheck from Win7 on the HDD but I am not sure if that will work on Windows 8? Same with FixBoot if it is Possible? The LENOVO H Drive has 3 Folders with Data in it Lenovo & Drivers & Applications.
HISTORY
I did the Restore, took 3 hours, but then said Success
Option to Reboot or Shutdown
Chose Reboot
Eventually Booted to a Windows Pale Blue screen with the Cursor half hour later, the Box came up to start the Restore again I did it, same as above time and Result so this time I chose Shut Down Started - Logo for long time then loading Files and back at the Box to Start Restore again I have since tried booting with Default Options UEFI and Legacy in the BIOS In the middle of all this, as it is about 4 hours to do the restore.
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Feb 15, 2014
I have Windows 8.1 PC, then i installed EaseUS Partition Master 9.3 (All Editions), So i am having seperate ISO of WinPE, so i like to know "How to install WinPE on PC" because i want to Create EASEUS 3.9.0 Bootable CD.
I am having all the files like this below.
1)--EASEUS Partition Master 3.9.0
2)--WinPE ISO image ( in this iso there is no SETUP file is there, so how i should install this WinPE) If i install WinPE then i am able to create EASEUS Bootable CD.
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Apr 1, 2014
After updating my Windows 8.1, I experienced a BSOD and it has yet to go away. I cannot boot into my old Windows 8.1 partition and keep getting the error message: CRITICAL_PROCESS_DIED
I analysed the crash dump created and it revealed that ntdll.sys was the problem. I don't want to lose those files and my hard disk is all cluttered now with the addition of a new partition.
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Oct 24, 2013
which partition holds Windows 8 on my Dual Boot 7/8 system. I want to delete Windows 8 64 bit and reinstall Windows 8 32 bit, then update to Windows 8.1. I'm doing this because the system's old enough that 64 bit 8.1 won't install but maybe 32 bit will. I won't know unless I try.
I need to figure out which partition Windows 8 is on so I can format the drive and reinstall.
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Jul 5, 2013
I have made my Windows 8.1 DVD, but I haven't committed to installing it yet.
I'd like to just install it on a separate partition on my second hard drive.
Normally I wouldn't hesitate to just go ahead and install it, but I'm not sure if the new Uefi bios will just except it and automatically set up the dual boot menus etc, the way that it did in the past.
Are there extra steps that I need to take before going ahead with the install.
I definitely don't want to replace my current Windows 8 install until the final version comes online at that time I will probably do a complete new install of all my software.
Dual install without using VM?
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Feb 12, 2014
I recently tried to install Ubuntu 12.10, and lost access to Windows 7 and 8.1, after a LOT of looking for bootable disks and stuff, I did fix it.
After recovering the operating systems (I had to delete Ubuntu partitions and then fix the Windows 7 bootloader, because there was 6 primary partitions), the Windows 8.1 partition says its 10.0GB and empty, but when I double click on it, you can see the files inside.
This is bad, because when I try to boot in Windows 8, it gets to the login screen after a long boot time, then it just shows the time, battery, and internet status, and the rest is a blue screen, implying its broken. I found out this is because some OS files are missing, which might be related to the above paragraph. I have lots of paid software in Windows 8, and it was LOTS of downloading, so I dont want to wipe the drive, or have to touch the data, only be able to boot into Windows 8 again.
When I open in a partition viewer, it shows the 70GB partition as it should, and also
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Sep 17, 2014
I have a new Dell 5537 comes with Windows 8.1. Day before, I tries to create a new partition in C: where is the the OS sits. After created an unallocated partition, I did not format it, jjust restart my laptop. Then it won't start. Even I use its Recovery disks, it cannot recover my system. NOW, I can see the Partition detail: 1: ESP Total 500MB Free 494MB SYSTEM2. DIAGS Total 40MB Free 35MB PRIMARY3. Total 128MB Free 128MB MSR(RESERVE)4. Total 2GB Free 1.7GB RECOVERY5. Total 920.6GB Free 920.4GB PRIMARY6.PBR IMAGE Total 8.2GB Free 4.3GB RECOVERY#5. Partition is where I have created a new partition but not format yet. Now I have a new Widnows 8.1 image file and tried to install in this partition, but it gave me an message: "WINDOWS CANNOT INSTALL, IT IS OF GPT PARTITION STYLE". so that I can install my new Windows 8.1 in this partition.
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Sep 19, 2013
How to edit the boot entries manually?
I have triple boot - win8, win8.1, win7 with EFI system partition on GPT disk, there is no problem with win8(installed first), but on win8.1 and win7, the boot manager pointed it to windowssystem32winload.exe, and it should pointed to windowssystem32winload.efi in order to work, how can I change that?
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Apr 21, 2012
Will it be possible to boot Windows 8 from a GPT partition using BIOS (not UEFI)? I'll be using the 64bit version.
Technically, I know it's possible as I'm doing it with FreeBSD, many Linux distros etc. Using hybrid MBR/GPT, I've read others have Win7 booting off GPT partitons as all. I'd rather not go that route.
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Dec 17, 2013
I lost my restore link to the recovery partition after i installed another version of windows.
This is a ASUS x550L with a pre-installed Windows 8 inside. What i need to do is set my recovery partition as active, boot from there, use that to reformat/re-install windows on drive C. I just dont know how to do it.
Booting Asus recovery partition.
Set boot partition as Active partition.
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Dec 25, 2013
I can not boot my Toshiba laptop Windows 8.1 computer after I was attempting to resize partitions. I got in over my head. Now I'm stuck and cannot boot.
I believe the problem is I somehow created a second copy of my EFI partition. Now I have two "system" partitions of the same size.
Cannot boot, but got a command prompt. Ran "bcdedit" and got:
"The boot configuration data store could not be opened.The requested system device cannot be identified due to multiple indistinguishable devices potentially matching the identification criteria."
Other things I uncovered:
Diskpart> list partition
Partition 1 System
Partition 2 System
Partition 3 Reserved
Partition 4 Primary
Partition 5 Recovery
Partition 6 Recovery
(note both partitons 1 & 2 say "System" for type.)
Diskpart> Select Partition 1detail partition * Volume 2 System NTFS Partition 352 MB Healthy Hidden
Diskpart> Select Partition 2detail partition * Volume 3 FAT32 Partition 352 MB Healthy Hidden
I conclude that Partition 1 equates to Volume 2, Partition 2 to Volume 3. However there is no longer a "System" label on Part 2/Vol 3 once drilled down to details. Also its FAT32.
I am hoping/praying that I could "delete" one of the duplicate partitions. But scared to make any such move. Not sure where to go from here.
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