INACCESSIBLE BOOT DEVICE after Win10 Update

FreeBooter said:

Code:

Recovery

Your Pc couldbt start properly

After multiple tries the operating system on your Pc failed to start so it need to be repaired.

Error code: 0xc0000001

You’ll need to use recovery tools. If you dont have any i atallatuon  media files (like a disc or usb device) contact your pc administrator or  pc/device manufacturer.

Looks like we have repaired BCD data store because above error is not cause by corrupted BCD data store.

The 0xc0000001: A required device isn’t connected or can’t be accessed boot error message caused by a wide variety of causes, with the most common one being system file corruption, or damaged memory.




Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

Please type below command into Command Prompt and press Enter key.

Following command will fixes errors on the disk and locates bad sectors and recovers readable information.

Code:

Chkdsk D: /r

Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.



Please boot your computer with Windows Setup Media and from Windows Recovery Environment start the Command Prompt.

Please type below command into Command Prompt and press Enter key.

The following command scans integrity of all protected Windows system files and repairs files with problems when possible.

Code:

Sfc  /Scannow   /OFFBOOTDIR=D:\   /OFFWINDIR=D:\Windows

Please replace partition letter D: with Windows installed partition letter. When computer boots into Windows Recovery Environment (WinRE) environment the drive letter assign to Windows partition may not be C: drive letter because Windows 7, 8 , 8.1 and 10 creates a separate system partition when it's installed from scratch. The system partition contains boot files WinRE assigns the system partition the C: drive letter and the Windows installed partition will be assign any other drive letter usually D: drive letter is assign to Windows installed partition. The Bcdedit /enum | find "osdevice" command can be use to find out the drive letter of the Windows installed partition the output of the Bcdedit command is similar to this osdevice partition=D:. The drive letter after partition= is the drive letter of the Windows partition.


If the error is caused by damaged hard disk cables, try any of the following tips to fix the error:

• Try a different port for the SATA/IDE cables
• If you have more than 1 HDD, leave only the HDD with Windows installed and test multiple SATA/IDE ports and cables

If the HDD cables and ports are not damaged, the issue can also be from the hard disk itself.

Imgur: The magic of the Internet

there should be no issues with the drives themselves or the motherboard or the connectors or cables

issue definitely relates to microsoft writing useless code that breaks their own OS on updates + my shitty job at trying to solve it myself which made it worse.

Greatly appreciate your help so far

zbook said:

For these steps please use a camera to take pictures and post images of the results into the thread:
1) open command prompt > Administrator: X:\Windows\system32\cmd.exe > X:sources:>
2) type: diskpart
3) type: list disk
4) type: select disk 0
5) type: list volume
6) type: select disk 1
7) type: list volume

Imgur: The magic of the Internet

I think i know what is the problem you said you are booting your computer UEFI mode the "System Rese" partition should be FAT32 file system partition its NTFS partition. We need to delete and create new "System Rese" partition.


From Command Prompt execute below commands:

Code:

Diskpart

List Disk 

Select Disk 0

List Partition

Select Partition X

Delete Partition

Create Partition EFI

FORMAT FS=FAT32 LABEL="System"

Assign Letter=D

List Volume

Exit

 bcdboot C:\Windows /s D: /f  ALL

Use "List Disk" command to find out disk number assign to Windows 10 installed drive.

Replace number 0 zero with disk number assign to Windows 10 installed drive

Use "List Partition" command to find out "System Rese" partition assigned number.

Replace X letter with "System Rese" partition assigned number.

You may need to replace C: drive letter with Windows OS installed partition drive letter.

I have to warn you Diskpart tool is very dangers so please make sure to execute Diskpart command carefully.

FreeBooter said:

I think i know what is the problem you said you are booting your computer UEFI mode the "System Rese" partition should be FAT32 file system partition its NTFS partition. We need to delete and create new "System Rese" partition.


From Command Prompt execute below commands:

Code:

Diskpart

List Disk 

Select Disk 0

List Partition

Select Partition X

Delete Partition

Create Partition EFI

FORMAT FS=FAT32 LABEL="System"

Assign Letter=D

List Volume

Exit

 bcdboot C:\Windows /s D: /f  ALL

Use "List Disk" command to find out disk number assign to Windows 10 installed drive.

Replace number 0 zero with disk number assign to Windows 10 installed drive

Use "List Partition" command to find out "System Rese" partition assigned number.

Replace X letter with "System Rese" partition assigned number.

You may need to replace C: drive letter with Windows OS installed partition drive letter.

I have to warn you Diskpart tool is very dangers so please make sure to execute Diskpart command carefully.

is there a good way before i try this to verify im using uefi? im not 100% sure what difference is between uefi and bios. is uefi just the ”modern” ”bios” where mouse is supported? im using a z87-g45 mobo if that helps.

if i use boot options it does list the windows usb as both one UEFI: Cruzer USB option and one that just says Cruzer USB.

The ssd where my OS is just says the SSD name, it doesnt say UEFI: before it for example.

anyway, is there a good way to find out if im using uefi?

UEFI interface that allows mouse and keyboard, users to change UEFI interface settings and monitor CPU temperature, select the boot device priority and view system information such as the CPU name, DRAM capacity etc..

Power on the computer and the system will start the Power On Self Test (POST) process. When the message below appears on the screen, please press <DEL> key to enter UEFI interface settings.


From Advanced menu found Windows 8 Configuration menu.

Sets Windows 8 detailed configuration and behaviors. Press <Enter> to enter the submenu.

Windows 8 Feature [Disabled] <--- Enable this setting.

Enables the supports for Windows 8 and newer versions of operating systems.

[Enabled] The system will switch to UEFI mode to meet the Windows 8 requirement and newer versions of operating systems.

Also enable Secure Boot.

FreeBooter said:

UEFI interface that allows mouse and keyboard, users to change UEFI interface settings and monitor CPU temperature, select the boot device priority and view system information such as the CPU name, DRAM capacity etc..

Power on the computer and the system will start the Power On Self Test (POST) process. When the message below appears on the screen, please press <DEL> key to enter UEFI interface settings.


From Advanced menu found Windows 8 Configuration menu.

Sets Windows 8 detailed configuration and behaviors. Press <Enter> to enter the submenu.

Windows 8 Feature [Disabled] <--- Enable this setting.

Enables the supports for Windows 8 and newer versions of operating systems.

[Enabled] The system will switch to UEFI mode to meet the Windows 8 requirement and newer versions of operating systems.

Also enable Secure Boot.

oki enabled windows 8 thing and secure boot.

after boot i got this screen:

Imgur: The magic of the Internet

upon reboot i no longer get a splashscreen allowing me to choose Del for bios or F11 for boot options.

I changed boot options in uefi bios to only USB but it still reaches this screen, i seem unable to now enter the USB Windows Media thing to access troubleshooting.

This worked fine when not running the Windows 8 mode.

I am not sure why I see no splash screens at all as it is enabled and i tried fastboot off.

Only screen that shows is an msi logo for half a second, however if I spam click F11 i seem to get launch options. Even when choosing my USB i now see that error, instead of the windows repair thing the USB booted before

If I go to boot options and choose uefi hard disk drive bbs priorities the only option is Windows Boot Manager and Disabled, before I swapped to UEFI it showed me each disk instead and i could choose the one with the OS to be #1, not sure if this is relevant.

edit: after enabling windows boot manager the system disk is found, it gives me this error if i try to boot from it:

https://imgur.com/a/ZmIN2
(i attempted startup option -> safemode, then i got the inaccessible boot device error)

trying to boot from the usb returns the error shown earlier in the post, it no longer brings me to the windows portable media repair thing.

I made a mistake before we enable UEFI mode we need to make sure Windows installed storage drive is partition as a GPT partition give me little time to find out how we can found out if Windows installed storage drive is partition as a GPT partition.

Can you please post screenshot below commands output:

Code:

Diskpart

List Disk

FreeBooter said:

I made a mistake before we enable UEFI mode we need to make sure Windows installed storage drive is partition as a GPT partition give me little time to find out how we can found out if Windows installed storage drive is partition as a GPT partition.

okay i turned off windows 8 mode and rebooted to the USB (non-uefi mode) so i am back with access to cmd, will post list disk command below:
Imgur: The magic of the Internet

(i also advice you to read my previous post as i edited it with updates)

You can leave the UEFI mode turn of as Windows 10 installed storage drive is not partition as GPT disk.

Sorry but i'm running out of ideas, have you tried resetting Windows 10 from Windows Recovery Environment you will have a option to keep your personal files.