Win 10 crashed and stopped booting from Dual boot.

Vineet Garg · 11 Jan 2021

Somethings To Try From The Past!

ShaneSaunders said:

I have a couple questions before I do all that...
Are you sure I have to delete both of the first two partitions? One is Reserved and the other is for the EFI. What would happen if I delete the Reserved partition?
Also, can you look through your checklist again? I haven't created an EFI with command prompt in this way. I just don't want to accidentally format the main partition with all my data.
Also, I am wondering if the issue is something else, as I got the 0xc000021a when I booted from both the Windows 7 Boot Menu booting from that disk, and from the Windows 10 Boot when I booted from that disk

1. Yes you have to delete both of the first two partitions. Nothing will happen If you delete the 'Reserved' partition 100% Sure & we can recreate it whenever wanted.

2. I am 90% sure that creating 'EFI with Command Prompt' the way I suggested, will not format the main partition. Anyway, To be on 100% safe side : Delete both the partitions & Create the 'EFI Partition with Disk Genius Right Click Menu' to the first place in on the Win 10 Hard disk, taking all the 'unallocated space' before the Win 10 C: 'the main partition'.

Then detach other hard disks, Boot into the 'USB Recovery Media', Launch 'Macrium Reflect' & try 'Fix Boot Errors'

3. I Think Safe Mode Boot & other steps in my last post would also be fruitful.

4. It will be also good to Disable Driver Signature Enforcement & Try to boot into Win 10.

5. I think the 'USB Recovery Media' is also having 'Lazesoft Recovery Suite' that offers some options to solve boot problems. I think there is one option that automatically solves boot problems but hard to recall as of now. You can explore it as well.

Notes :

1. The EFI partition should hold the first position & 'MSR ( Reserved )' partition should be placed only after that. I think It's confusing the 'Macrium Reflect' on your disk configuration which is holding 'Reserved' partition on the first place.

2. I have noticed that 'DiskGenius' is creating 'EFI partition' in Format 'Fat 16', I think 'Fat 32' format is preferable. So, I was trying to Create the EFI Partition with 'Fat 32' format with commands.

3. I will also like to check with 'bcdboot C:\Windows /s S: /f all' command where C: has to be replaced with the Win 10 parition letter. But that's not to be done when we are using 'Macrium Reflect Boot Repair'

4. I will also like to attach both the disks Windows 7 & Win 10 at the same time & try 'Fix Boot Repairs' with Macrium.

5. I will also like to attach both the disks, delete the EFI & MSR ( Reserved ) partitions on Win 10 disk & try Macrium Boot Repair.

Thanks. ...

ShaneSaunders · 19 Jan 2021

I finally got around to trying those options.
It will not boot in any mode, including any of the Safemode options.
The boot utility didn't have the Lazesoft Recovery Suite software on that.
Rebuilding the EFI/BCD didn't work. In fact it seemed to have more issues and comes up with other errors now. Either the 0xc0000021a error or 0xc0000001 or even 0xc0000098 (BCD file does not contain a valid windows operating system), something along those lines.

NavyLCDR · 19 Jan 2021

It sounds like your installation of Windows is corrupted.

ShaneSaunders · 20 Jan 2021

Yeah I figured as much. One thing I have is plenty of time and patience. Are there ways to work out what is causing the problem? Are any DISM options of any use? Etc

zbook · 20 Jan 2021

What are the status of the important computer files:
a) files backed up to another drive or the cloud
b) backed up images saved to another drive or the cloud
c) no backed up files or images > files need to be saved
d) no backed up files or images > files do not need to be saved

Which disk / partition is Windows 7: disk 0 C:
Which disk / partition is Windows 10: disk 1 H:

Vineet Garg · 20 Jan 2021

Hi,

I would like to see the current status with both the disks connected.

Any problems with windows 7 Installation ?

Lazesoft Recovery Suite Home is there on the Recovery Media!

Thanks. ...

ShaneSaunders · 20 Jan 2021

Hey guys,

I have manually copied all of the Windows 10 Drive to portable storage manually.
I don't have an image copy of Windows 10 before or after the crash sorry.

Windows 7 still runs fine.

Win 7 is Disk 0 / Partition 3
Win 10 is Disk 1 / Partition 3 (was partition 2 until recently when I created an EFI folder on that disk)

Do you need an updated DISM log or srt log or anything like that?

zbook · 20 Jan 2021

For the problematic Windows 10 operating system these are options:

a) reset save files equivalent (saves files; drivers and applications need to be reinstalled)
b) clean install (reinstall drivers and applications; restore files)
c) troubleshoot

ShaneSaunders · 22 Jan 2021

Hi Zbook

I am happy to troubleshoot to see if we can get it back up and running. If this turns out impossible, I would then try the option of resetting Windows but keeping all my personal files and setting. If after all this, the only way is a clean reinstall and then trying to move my saved files and settings back across, we can try that as a last resort.

I am a little worried that I may have made the task a tad more difficult as after the initial crash, I followed online 'guides' about preparing Windows 10 and tried some of those options before coming here.

Still, I have time and patience as I have a Windows 7 install to fall back on in the meantime and also there are a couple other PCs in this house that have Windows 10 I can have access to if needed.

Shane

zbook · 22 Jan 2021

Steps that were already performed may be repeated.

Boot Windows 7 and run these steps on all disk drives:

1) Run HD Tune (free version) (all drives)
HD Tune website
Post images into the thread for results on these tabs:
a) Health
b) Benchmark
c) Full error scan

2) Run Sea Tools for Windows
long generic test
Post an image of the test result into the thread
SeaTools for Windows |
Seagate
How to use SeaTools for Windows | Seagate Support US

3) Run HD Sentinel: (free or trial edition)
Hard Disk Sentinel - HDD health and temperature monitoring
Hard Disk Sentinel - HDD health and temperature monitoring
For each drive post images of these tabs into the thread:
Overview tab
Temperature
SMART
Disk performance

Take Screenshot in Windows 10 Windows 10 General Tips Tutorials
Take Screenshot in Windows 10

4) Open administrative command prompt and type or copy and paste:
chkdsk /r /v
This may take hours to run so plan to run overnight.
Run on all drives using the syntax: chkdsk /r /v C: or chkdsk /r /v D: changing the drive letter to the applicable drive.

C:\Windows\system32>chkdsk /r /v
The type of the file system is NTFS.
Cannot lock current drive.

Chkdsk cannot run because the volume is in use by another
process. Would you like to schedule this volume to be
checked the next time the system restarts? (Y/N)

Type: Y
reboot

5) Use the information in this link to find the chkdsk report in the event viewer.
Copy and paste into notepad > save to desktop > post into the thread using a one drive, drop box, or google drive share link:
Read Chkdsk Log in Event Viewer in Windows 10 Windows 10 Performance Maintenance Tutorials
Read Chkdsk Log in Event Viewer in Windows 10
Disk Check - Windows 7 Help Forums
Check Disk (chkdsk) - Read Event Viewer Log - Windows 7 Help Forums

6) Run the DM log collector:
BSOD - Posting Instructions
How to Upload and Post Screenshots and Files at Ten Forums

7) Update the specs in the "My Computer" section:

System Specs - Fill in at Ten Forums
In the left corner below in your post you find 'My System Specs'.
After clicking it you can find a link a little below that says 'Update your System Spec', click on this link to get to the page where you can fill in your system specs.
https://www.sevenforums.com/tutorial...tem-specs.html

Include PSU. cooler, case, peripherals and anything attached to the computer by wired or wireless (mouse, keyboard, headset, printer, xbox, USB wireless network card, etc.)

8) Open disk management > by default some columns are compressed > widen each Status and Volume > make sure the contents within the parenthesis are in full view and that none of the characters are cutoff > view disk 0 > widen this row as needed so that all of the characters are in full view > post an image into the thread
Disk Management - How to Post a Screenshot of
https://www.sevenforums.com/tutorial...ure-image.html

9) Download and install Minitool Partition Wizard > click launch > post an image of the results into this thread
https://download.cnet.com/MiniTool-P...-10962200.html
https://www.partitionwizard.com/part...ion-magic.html

10) Find 2 flash drives that you can format (> or = 8 GB)

11) Create a bootable Windows 10 iso 20H2:
https://www.microsoft.com/en-us/soft...load/windows10
Download Windows 10 ISO File
Create Bootable USB Flash Drive to Install Windows 10

Take Screenshot in Windows 10
https://support.microsoft.com/en-gb/...re-screenshots
How to Upload and Post Screenshots and Files at Ten Forums

For any problems posting images please use share links: one drive, drop box, or google drive