System Repair Disc Not Bootable in Win10

Hi,

To start... The System Repair Disk must be the same version or newer than the Image being restored, if you are trying to restore an image.. This may still apply if you are attempting some other type of repair..

Do you remember seeing a "EFI" partition on your HDD with Windows ? You can look in Disk Management and check if needed.. This partition is used on UEFI Bios machines, and not Legacy..

There is a remote possibility that your machine switched from a Legacy installation on Windows 7 to a UEFI installation on Windows 10... How you create the installation media for Windows 10, and how you boot with it, can trigger this..

Regardless... When you boot your computer with the CD, hit the key for BOOT OPTIONS at the manufacturer's screen... Usually F9, F11, F12, Esc, but it varies by machine..

You may see your CD\DVD drive listed twice.. as a CD\DVD Drive or Optical Drive, and again as a "UEFI CD\DVD Drive" or "UEFI Optical Drive"... Try both if they exist..

Some machines do not support booting from a "UEFI CD\DVD Drive"...

Just as a note... Windows 10 Installation Media has a "REPAIR" option on the lower left of the Install screen.. This gives all the same options and tools as the Repair CD would.. Simply select Repair... Troubleshoot...

If necessary, you should be able to boot with the UEFI USB Flash Drive version of the Installation Media..

Let's start with a basic question, one that I asked before but has not yet been answered. How do I tell what the version is on the system repair disk? I know what version of Win10 I'm running on my computer because I see it in system specifications.

BIOS is set for Legacy mode and there is no CD/DVD drive specified in the BIOS options when I interrupt the boot sequence by hitting the ESC key on startup or restart.

The only installation media I have for Win10 is an ISO file on CD.

Correction - sometimes the CD/DVD drive is present as a boot device option and sometimes it is not. It depends on how I get into BIOS/UEFI. This is getting really frustrating. I think the key is being able to tell what version is on the system repair disk. If I could get that information, that would be helpful.

Hi,

I honestly do not know.. I just checked one of mine and could find nothing as to version..

If you could boot with it and open Command Prompt, it would be listed at the top of the command prompt screen.. The version on the Repair CD would be the same as the version of Windows 10 that was installed when it was created, but that is the best I can do..

If your CD\DVD drive is not showing up in Boot Options and\or Bios consistently it probably has a problem and is why you might be getting the error.. You might check it's connections if possible..

The installation media on a CD\DVD would work, but you may get an error message if it is older than the image trying to be recovered.. Everything else should work..

Are you sure we are talking about the same Bios options ? The Boot Options I am mentioning is not a internal Bios function.. The Boot Options is accessed without actually entering the Bios... It is a "One Time" boot selection..

Edit... If you were to run the Create Media Tool you would get the newest version of Windows 10 ISO, or have it burned to a Flash Drive or DVD... They are getting big... You may need a Dual Layer DVD.. The last one I downloaded was slightly over 4gb which would fit, but I have seen some over 5gb..

Looks like your recovery tools are not operational..  It might be helpful to see a snipping tool picture of your Disk Management window but you will probably need to run some type of command to recover it, if it is located where we might think it is..

You would first need to disable the reagentc with reagentc /disable  Then run something like the command below.  The path is important and you will probably need to put a drive letter on the Recovery partition so you can know the path..

REAGENTC.EXE /setreimage /path r:\Recovery\WindowsRE /target C:\Windows