Windows 10: boot0:error system cannot boot

accidentally deleted system reserve partition of 345mb in win 10 pro 64 bit. Now i face a problem with boot system. Msg shown that on screen boot0:error

:)

 

laptop doesnt boot automatically

This is what happened.

1. Did a repair install and later disabled hibertnate in CMD.
2. Enabled legacy option ROM in BIOS.
3. After a few times startup ( i used the system in such mode for 5 days), changed boot option back to default.
4. Vola!! It boots automatically to win10 without any keypress. Tested it with many starts to confirm the same.
5. Re-enabled hibernate option using CMD and later selected Fast Startup.
6. System booted normally, without the need for any keypress.

I do not know exactly whether such steps resolved the problem or what else happened, hence cannot suggest above steps.

Many thanks to all members who helped to troubleshoot problems.

 

BCD Corrupted? Cannot boot Windows 10

Yes, I'm quite sure.

Edit: Tried your steps above again, and at assign letter=s, it says The specified drive letter is not free to be assigned.

Edit 2: Rebooted and did all the steps successfully, but /fixmbr and /fixboot both say cannot find the file specified, and the same 0 Windows installations for /rebuildbcd. It was 1 before

- - - Updated - - -

Another reboot, another mystery. /fixmbr and /fixboot now works, /rebuildbcd shows 1 installation, and saying yes to add to boot list brings us back to the indistinguishable error. Is this because both my 128MB and 100MB partitions are listed as System rather than Reserved and System? There's no recovery partition it seems.

 

Cannot update to 1903

In place upgrade repairs and Windows upgrades cannot be performed successfully while in safe mode.

Instead perform upgrades while in clean boot.

Once you have ran through the steps in the upgrade check list then perform an upgrade in clean boot using the Windows 10 iso.

It may be successful after running through the check list.
If not it should generate the better error code.
Panther logs can be scanned to see if there are focused troubleshooting steps.