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battula97

1 Message

3018

June 14th, 2020 15:00

grub rescue - after deleting linux partition. not detecting windows 10 OS from USB or DVD bootable options

Dear All,

I have dual boot options on my DELL XPS L502X model. I upgraded from windows 7 to windows 10. After that I deleted linux partition and not Remove the Grub Bootloader. and unfortunately rebooted my windows 10 machine and then entered into "grub rescue".

I tried creating USB and DVD bootable stick with windows 10 os to enter repair the boot loader file but no luck.

DELL laptop complaining no os found and again enter into grub rescue.

Please help me to solve the issue.
even I tried USB stick with Ubuntu OS but no luck.

I changed boot priority options in BIOS.

I can provide more information if required. I saw previous related problems but they able to solve issues using bootable USB stick or DVD disc but in my case my machine is not recognizing OS in USB or DVD.

Thanks,

Venkat

1 person also has this problem

Nando83

1 Message

February 21st, 2022 10:00

Same problem here. Did you solve it?

Please let me know how.

Thank you,

Ferdinando

ann_droid

2 Intern

 • 

508 Posts

April 20th, 2022 10:00

Hi

There are 2 places the boot process goes, forst Boot Manager, then Boot Loader.

 

Boot Man x 5.jpg

 

Above is my old HP screenshot.

I would move the Windows Boot Manager to the top.

 

LEN Boot Order.jpg

 

Similarly on my Lenovo, so do you have similar?

 

Then the Boot Manager on the first part of the HDD/SSD takes over, it would be somewhere in the range of 100 Mb to 250 Mb and hidden from normal access.

 

If in doubt please ask.

ann_droid

2 Intern

 • 

508 Posts

May 10th, 2022 04:00

Hi

Dont try this at home, unless it is a last resort.

 

Paragon Partition Manager Community edition.

The first (yeah I know I wrote forst and didn't corrct it) partition is 100 - 250 mb in size.

You can allocate a Drive Letter to it (A:) JUST TEMPORARY.

 

Then mount that drive and remove any unwanted boot types.

 

A:\>dir *.* /s >> c:\bootle.txt

A:\>dir a:\*.*
 Volume in drive A is SYSTEM_DRV
 Volume Serial Number is 58D6-F4E8

 Directory of a:\

01/11/2021  16:03              EFI
25/07/2021  21:17              BOOT
18/09/2021  11:39              opensuse
               0 File(s)              0 bytes
               3 Dir(s)     200,732,672 bytes free

 

Directory of A:\EFI

25/07/2021 21:17

.
25/07/2021 21:17 ..
25/07/2021 21:17 Microsoft
20/08/2021 13:26 Boot
27/10/2021 10:17 UpdateCapsule
16/08/2021 15:07 Insyde
01/11/2021 16:03 ubuntu
13/09/2021 12:46 pclinuxos
18/09/2021 13:13 opensuse

 

Insyde is the BIOS updater BOOTLOADER.

 

There are hundreds (perhaps thousands of files inside the boot area), including SECURE BOOT signing with MOK and SHIM.

 

Directory of A:\EFI\opensuse

18/09/2021 11:44

.
18/09/2021 11:44 ..
19/09/2021 14:24 846,240 MokManager.efi
19/09/2021 14:24 1,222,656 grub.efi
19/09/2021 14:24 934,680 shim.efi
19/09/2021 14:24 58 boot.csv
19/09/2021 14:24 125 grub.cfg
19/09/2021 14:24 143,360 grubx64.efi

 

A very dangerous and delicate area.

 

The BootManager needs to point to the correct set of files.

 

NEVER COPY ME, unless it is a last resort.

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