Windows 10: upgrading to SSD and unable to boot into Windows10 (EFI hidden)

Hi,

I am unable to boot into windows 10 after completing the installation successfully. PC is HP Prodesk G3 small form factor (business PC)

All files are being written to the SSD but just can not boot. The disk is GPT and secure boot is enabled. I am unable to find an option for AHCI in bios so hope its set correctly.


Startup repair returns (couldnt repair your PC) > C:\windows\system32\logfiles\srttrail.txt


Disk Part shows a 100MB volume listed as FAT32 which is the EFI volume and I am guessing that becasue this volume is hidden the PC is unable to use boot manager? When attemptimg to boot afer install it does list UEFI: Windows Boot Manager , but only a black screen after.

Would really appreciate assistance in sorting this as I am trying to upgrade.

:)

 

UEFI boot options disappeared from BIOS; now getting reboot and select proper boot device

In short, I need to get the system/BIOS to allow UEFI booting of the SSD.

Computer started up today with default BIOS settings.

• Only SSD 1(Windows boot) and SSD 2 were listed in BIOS; HDD 1 and HDD 2 were not visible
• System would not boot. Gave the 'reboot and select proper boot device' message
• Boot menu has no UEFI/EFI (or Windows Boot Manager) entries anymore

I went into Partition Magic/Gparted and confirmed :

• All drives are still showing
• All drives' data is in tact [EFI volume/partition is still listed (and can be browsed/files accessible)]

Gparted print out (note dev/sda2 apparently that is normal behavior) :

/dev/sda1 (locked) EFI System Partition--Fat32--/media/sda1--100.00mb--46.81MiB--53.19MiB--boot,esp
/dev/sda2 (exclamation mark) Microsoft reserved partition--unknown file system--no mount point--128.00MiB--unused spaced--msftres
/dev/sda3 basic data partition--ntfs--/media/sda3--118.58GiB--70.78GiB--47.80GiB--msftdata
/dev/sda4--ntfs--/media/sda4--450.00MiB--327.71MiB--122.29MiB--hidden,diag



As I am able to boot Windows installation from USB, I tried the standard startup repair. It said it was not able to fix any problems.

Next I tried to repair the EFI with Diskpart in the shell:

• sel vol 1 (note that Diskpart states EFI partition is 'hidden')
• assign letter=z:
• cd /d z:\EFI\Microsoft\Boot\
• bootrec /fixboot
• bcdboot c:\Windows /l en-us /s vz /f ALL

It completed all tasks successfully. Unfortunately that did not work.

Other things I have tried :

• Removing CMOS battery and replacing with a new one - my HDD started showing up again after doing this.
• Using the old MBR commands(in hopes it would force the Windows startup repair to recognize and fix a problem)

bootrec /fixmbr
bootrec /fixboot
bootrec /scanos
bootrec /rebuildbcd​

• Loaded BIOS 'optimized'/defaults (the system did this already once before, hence why I am in this situation, though doing it manually seemed like an option worth trying. Note that after doing this and restarting the system, HDD's stopped showing again)
• Removed new CMOS battery and left it out of the system for thirty minutes
• Formatted EFI and msftres partitions, then rebuilt the EFI boot records

In summary, am looking to force the BIOS to see the EFI partition on the SSD boot drive, as it is not an option any longer.

 

Windows defender offline error: EFI\Microsoft\Boot\BCD - 0xc0000185

Hi Dave,

Could you provide us additional information to assist you better with this issue:

• What is the make and model of your device?
• Have you made any changes to the operating system prior to this issue?
• Are you able to boot the device to desktop with this error message?

This issue might have occurred due to corruption in the boot files or BOIS unable to detect your drive to boot.

I suggest you to refer to the below thread, check if your issue matches with the same.

If so, try the troubleshooting steps suggested by -.[Final]#[Boss].- and check if
it helps.

Error code after update File:\EFI\Microsoft\Boot BCD
Error Code 0xc0000185 BSOD

Hope this information is helpful.

 

System Drive Hidden - Unable to Unhide - Can't Boot PC - Help Please?


Hi, the easiest approach in this somewhat complicated scenario would be to reinstall Win 10 to your SSD, with no other disks connected.

Now, before you posted here, was your PC running ok with the SSD?

What would you need to recover from your SSD? Just data? Do you have many programs installed on it? What would you lose by reinstalling?

What is missing from the story (forgive me if I'm wrong) is - if your PC was running with the SSD, what went wrong to stop it doing so?

(Leave my suggestion at the end of #2 aside for the moment - we can come back to that).

- suggests your SSD may be formatted as UEFI/GPT

Partition layout of your SSD
So, boot from your Macrium Reflect disk, and we're looking for sthg like this:




Please take a photo of that and post it like a screenshot.

(As you're unsure whether you created your SSD with legacy or UEFI set, the partition layout should tell me which).