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Cannot boot windows 10, “bootrec /fixboot” gives “access denied”

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9

6

My “always on” home desktop today appeared to be totally unresponsive. It was clear that I had only one choice to power reset it. At first it seemed that it booted into my login screen, but again my I did power reset by mistake. From this point on I wasn’t able to boot. It shows “inaccessible boot device” blue screen.

Recovery or restore doesn’t work. From cmd prompt I see my C: drive and all files seem to be ok, entire chkdsk shows that everything is ok with the drive.

bootrec /FixMbr works, however bootrec /fixboot gives me “access is denied.”

bootrec /scanos and bootrec /rebuildbcd both show “Total identified windows installations: 0”

I tried to run it all from the UEFI partition by enabling it from diskpart but I still get “access denied” for fixboot, no matter what I tried. There is one suggestion for the “access denied” error: to format the UEFI partition and then manually create EFIMicrosoftBoot in there and retry bootrec /fixboot but I find it outlandish to even consider it.

Any suggestions? What could be wrong?

windows-10 boot

share|improve this question

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

add a comment | 

9

6

My “always on” home desktop today appeared to be totally unresponsive. It was clear that I had only one choice to power reset it. At first it seemed that it booted into my login screen, but again my I did power reset by mistake. From this point on I wasn’t able to boot. It shows “inaccessible boot device” blue screen.

Recovery or restore doesn’t work. From cmd prompt I see my C: drive and all files seem to be ok, entire chkdsk shows that everything is ok with the drive.

bootrec /FixMbr works, however bootrec /fixboot gives me “access is denied.”

bootrec /scanos and bootrec /rebuildbcd both show “Total identified windows installations: 0”

I tried to run it all from the UEFI partition by enabling it from diskpart but I still get “access denied” for fixboot, no matter what I tried. There is one suggestion for the “access denied” error: to format the UEFI partition and then manually create EFIMicrosoftBoot in there and retry bootrec /fixboot but I find it outlandish to even consider it.

Any suggestions? What could be wrong?

windows-10 boot

share|improve this question

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

add a comment | 

My “always on” home desktop today appeared to be totally unresponsive. It was clear that I had only one choice to power reset it. At first it seemed that it booted into my login screen, but again my I did power reset by mistake. From this point on I wasn’t able to boot. It shows “inaccessible boot device” blue screen.

Recovery or restore doesn’t work. From cmd prompt I see my C: drive and all files seem to be ok, entire chkdsk shows that everything is ok with the drive.

bootrec /FixMbr works, however bootrec /fixboot gives me “access is denied.”

bootrec /scanos and bootrec /rebuildbcd both show “Total identified windows installations: 0”

I tried to run it all from the UEFI partition by enabling it from diskpart but I still get “access denied” for fixboot, no matter what I tried. There is one suggestion for the “access denied” error: to format the UEFI partition and then manually create EFIMicrosoftBoot in there and retry bootrec /fixboot but I find it outlandish to even consider it.

Any suggestions? What could be wrong?

windows-10 boot

share|improve this question

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

share|improve this question

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

share|improve this question

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

edited Jul 1 '18 at 9:48

phuclv

10.7k64297

asked Jan 13 '18 at 21:00

PavelPavel

81321116

asked Jan 13 '18 at 21:00

PavelPavel

81321116

3 Answers
3

active

oldest

votes

14

I ran into the same issue, the suggestion from Darko_65 in Microsoft Answers forum is what worked for me:

"bootrec" command sometimes has problems finding proper boot device and windows installation to fix.



Use "bcdboot" command to fix boot (bcdboot requires that partitions are specified explicitly!)



bcdboot C:windows /s S:



specifies C: as Windows partition, S: as system partition.



Use "diskpart" or "mountvol" commands to map system partition.

share|improve this answer

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Thank you. You saved m̶y̶ ̶l̶i̶f̶e̶ my cloned win10 installation on a new SSD drive.
  
  – Toc
  May 18 '18 at 23:35
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Saved my bacon too. Had cloned my SSD to a new bigger one then wiped. Just 'bcdboot C:windows' fixed it for me.
  
  – AceJordin
  Dec 14 '18 at 18:32
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Bacons are still being saved for those of us who clone to larger SSDs.
  
  – Fls'Zen
  Mar 6 at 16:00
  

  
  
  
  

add a comment | 

0

In the answer given by @aoetalks, copying the BCD files to new mount point didnt worked for me. It always ended up saying source files not found. It could be because my /EFI directory got corrupted.

Anyways, trying to boot with a Windows 8.1 USB media worked.
All the commands, bootrec /fixmbr, /fixboot, /scanos, and /rebuildbcd worked fine and I'm back to my desktop in a few minutes.

It looks like the Windows 10 bootrec has some issues.

share|improve this answer

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

add a comment | 

0

It's been much easier for me: after 2 weeks (!!) of Windows 10 not booting with UEFI not recognizing my GPT disk anymore, I simply used diskpart from an installation DVD/USB:

diskpart

list disk

sel disk 0

sel vol 1

attributes volume clear readonly

sel vol 2

attributes partition clear readonly 

sel vol 3

attributes... 

...worked for me so I could boot into Windows 10 after 2 weeks, WITHOUT reinstalling.

share|improve this answer

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I've edited this answer to make the commands valid, as attributes partition... is not valid syntax and attributes volume... is the command that's likely being referred to instead, but I haven't confirmed that the answer works.
  
  – Hashim
  18 hours ago
  

  
  
  
  

add a comment | 

protected by Community♦ Jan 18 at 13:40

Thank you for your interest in this question.
Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).



Would you like to answer one of these unanswered questions instead?

14

I ran into the same issue, the suggestion from Darko_65 in Microsoft Answers forum is what worked for me:

"bootrec" command sometimes has problems finding proper boot device and windows installation to fix.



Use "bcdboot" command to fix boot (bcdboot requires that partitions are specified explicitly!)



bcdboot C:windows /s S:



specifies C: as Windows partition, S: as system partition.



Use "diskpart" or "mountvol" commands to map system partition.

share|improve this answer

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Thank you. You saved m̶y̶ ̶l̶i̶f̶e̶ my cloned win10 installation on a new SSD drive.
  
  – Toc
  May 18 '18 at 23:35
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Saved my bacon too. Had cloned my SSD to a new bigger one then wiped. Just 'bcdboot C:windows' fixed it for me.
  
  – AceJordin
  Dec 14 '18 at 18:32
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Bacons are still being saved for those of us who clone to larger SSDs.
  
  – Fls'Zen
  Mar 6 at 16:00
  

  
  
  
  

add a comment | 

14

I ran into the same issue, the suggestion from Darko_65 in Microsoft Answers forum is what worked for me:

"bootrec" command sometimes has problems finding proper boot device and windows installation to fix.



Use "bcdboot" command to fix boot (bcdboot requires that partitions are specified explicitly!)



bcdboot C:windows /s S:



specifies C: as Windows partition, S: as system partition.



Use "diskpart" or "mountvol" commands to map system partition.

share|improve this answer

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Thank you. You saved m̶y̶ ̶l̶i̶f̶e̶ my cloned win10 installation on a new SSD drive.
  
  – Toc
  May 18 '18 at 23:35
  
  
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Saved my bacon too. Had cloned my SSD to a new bigger one then wiped. Just 'bcdboot C:windows' fixed it for me.
  
  – AceJordin
  Dec 14 '18 at 18:32
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Bacons are still being saved for those of us who clone to larger SSDs.
  
  – Fls'Zen
  Mar 6 at 16:00
  

  
  
  
  

add a comment | 

I ran into the same issue, the suggestion from Darko_65 in Microsoft Answers forum is what worked for me:

"bootrec" command sometimes has problems finding proper boot device and windows installation to fix.



Use "bcdboot" command to fix boot (bcdboot requires that partitions are specified explicitly!)



bcdboot C:windows /s S:



specifies C: as Windows partition, S: as system partition.



Use "diskpart" or "mountvol" commands to map system partition.

share|improve this answer

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

"bootrec" command sometimes has problems finding proper boot device and windows installation to fix.



Use "bcdboot" command to fix boot (bcdboot requires that partitions are specified explicitly!)



bcdboot C:windows /s S:



specifies C: as Windows partition, S: as system partition.



Use "diskpart" or "mountvol" commands to map system partition.

share|improve this answer

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

answered Mar 14 '18 at 3:14

aoetalksaoetalks

29328

0

In the answer given by @aoetalks, copying the BCD files to new mount point didnt worked for me. It always ended up saying source files not found. It could be because my /EFI directory got corrupted.

Anyways, trying to boot with a Windows 8.1 USB media worked.
All the commands, bootrec /fixmbr, /fixboot, /scanos, and /rebuildbcd worked fine and I'm back to my desktop in a few minutes.

It looks like the Windows 10 bootrec has some issues.

share|improve this answer

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

add a comment | 

0

In the answer given by @aoetalks, copying the BCD files to new mount point didnt worked for me. It always ended up saying source files not found. It could be because my /EFI directory got corrupted.

Anyways, trying to boot with a Windows 8.1 USB media worked.
All the commands, bootrec /fixmbr, /fixboot, /scanos, and /rebuildbcd worked fine and I'm back to my desktop in a few minutes.

It looks like the Windows 10 bootrec has some issues.

share|improve this answer

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

add a comment | 

In the answer given by @aoetalks, copying the BCD files to new mount point didnt worked for me. It always ended up saying source files not found. It could be because my /EFI directory got corrupted.

Anyways, trying to boot with a Windows 8.1 USB media worked.
All the commands, bootrec /fixmbr, /fixboot, /scanos, and /rebuildbcd worked fine and I'm back to my desktop in a few minutes.

It looks like the Windows 10 bootrec has some issues.

share|improve this answer

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

share|improve this answer

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

answered Oct 7 '18 at 4:21

Jimson Kannanthara JamesJimson Kannanthara James

3131618

0

It's been much easier for me: after 2 weeks (!!) of Windows 10 not booting with UEFI not recognizing my GPT disk anymore, I simply used diskpart from an installation DVD/USB:

diskpart

list disk

sel disk 0

sel vol 1

attributes volume clear readonly

sel vol 2

attributes partition clear readonly 

sel vol 3

attributes... 

...worked for me so I could boot into Windows 10 after 2 weeks, WITHOUT reinstalling.

share|improve this answer

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I've edited this answer to make the commands valid, as attributes partition... is not valid syntax and attributes volume... is the command that's likely being referred to instead, but I haven't confirmed that the answer works.
  
  – Hashim
  18 hours ago
  

  
  
  
  

add a comment | 

0

It's been much easier for me: after 2 weeks (!!) of Windows 10 not booting with UEFI not recognizing my GPT disk anymore, I simply used diskpart from an installation DVD/USB:

diskpart

list disk

sel disk 0

sel vol 1

attributes volume clear readonly

sel vol 2

attributes partition clear readonly 

sel vol 3

attributes... 

...worked for me so I could boot into Windows 10 after 2 weeks, WITHOUT reinstalling.

share|improve this answer

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I've edited this answer to make the commands valid, as attributes partition... is not valid syntax and attributes volume... is the command that's likely being referred to instead, but I haven't confirmed that the answer works.
  
  – Hashim
  18 hours ago
  

  
  
  
  

add a comment | 

It's been much easier for me: after 2 weeks (!!) of Windows 10 not booting with UEFI not recognizing my GPT disk anymore, I simply used diskpart from an installation DVD/USB:

diskpart

list disk

sel disk 0

sel vol 1

attributes volume clear readonly

sel vol 2

attributes partition clear readonly 

sel vol 3

attributes... 

...worked for me so I could boot into Windows 10 after 2 weeks, WITHOUT reinstalling.

share|improve this answer

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

diskpart

list disk

sel disk 0

sel vol 1

attributes volume clear readonly

sel vol 2

attributes partition clear readonly 

sel vol 3

attributes... 

share|improve this answer

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

edited 18 hours ago

Hashim

3,33173264

edited 18 hours ago

Hashim

3,33173264

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1

answered Aug 25 '18 at 11:33

Marcello BassaniMarcello Bassani

1