Windows 7: Dual Boot - Delete a OS

John, if you want to move the bootmgr to C, use this: Bootmgr - Move to C:\ with EasyBCD

Thanks for reply. When I try this C: is not available. I have however moved it to the H: drive so the system & Bootmgr are on the same drive.

After doing this I tried to rename the H: drive C: but Computer Management would not alow this.
Regards John

Don't muck around with the lettering. Let the system manage that.

Btw: the bootmgr is only being copied, not really moved. I should have chosen another title when I made the tutorial. So wherever it was before, it still is also. But it will not have any effect because EasyBCD has deactivated that partition.

Thanks, I have managed to stop windows including the F: drive in a system image by using EasyBCD to copy BootMng to the h: drive then Format the f:drive. I will leave the system Drive as h:
So I am home and dry.
Regards John

Hi!

Thanks for the great tut !! However, after a long research (and about 4/5 boot files repair with WinRE), I believe it misses a very important part, which will cause the system NOT to boot : it cant find any boot file.


You miss a final step 6 !
Under "BCD BACKUP", you have to launch "Re-create boot files" !

I have tested this many times to make sure. Without doing it, the bios wont find the "boot files"
But when doing Step 4 - Reset the BCD / Step 5 - Adding a new entry / Step 6 - Reset the Mbr it works



To my "understanding", there are two parts : the boot files // the boot data config
- When hitting Reset BCD, I guess it will erase everything, files included.
- When adding new entry, you setup the boot data again, but not the files
- When hitting Recreate boot file, you copy the file again.

Files + data = Boot

Note: Of course, I might be totaly wrong in my understanding, but in my situation (VaioZ Windows 7 ultimate x64 with only 1 system installed) it didnt work another way.

I am using the 350Mb system reserved partition, and boot files were there for a long time.. that's why I believe the boot files were deleted when hitting reset BCD. At least that's what the bios says.


I should go on esayBCD forum to check what's going on exactly when hitting the reset button / recreate button

That is strange. I have done it several times as described and never had a problem. I wonder why that was different in your case.

Alright ..

I have spent some time on the esayBCD online user guide. It's a nice guide, pretty well done.


This page explain what you did in the first page of this guide :
Resetting the BCD - EasyBCD - NeoSmart Technologies Wiki


Then, this one explain some more "possibilities".
Recovering the Windows Bootloader with EasyBCD - EasyBCD - NeoSmart Technologies Wiki

Option 3 is the last one they give, so I guess I was in this situation.

What really *is* odd, is that the missing files were due to the "Reset BCD" first step, for sure. Tested 4 times in a row. So, it is strange indeed they do not advise to "Recreate" the boot files after a "Reset BCD", even if they know its deleting some files.


Anyway, hope my posts might help someone else with the same situation I was, it'es never fun to see a "no operating system" screen just after a fresh install ^^

Hey guys

I ended up this tutorial with Windows Boot Manager error:
File: \Boot\BCD
Status: 0xc0000098
Info: The windows Boot Configuration Data file does not contain a valid OS entry.

I have not recovery disk and F8 doesn't work

I found this tutorial which explains how to fix problem, but it required full EBCD version software which I can't afford.

Any advice how to fix this problem?
Thanks in advance