Windows doesn't find after install Manjaro

[brtsos]

Hi guys Please help me, because my wife will need this PC to work tomorrow

I installed Manjaro on this same disc where I have Win 10. I deleted during installation boot Windows partition and created new FAT32. Now Grub doesn’t see my Windows partition… How can I fix it? I tried fix it with Windows installer, but it doesn’t see Windows partition too.

os-prober return nothing.

GRUB_DISABLE_OD_PROBER is false

sudo parted -l
Model: ATA SanDisk SSD PLUS (scsi)
Disk /dev/sda: 1000GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags: 

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  1000GB  1000GB  ntfs               msftdata


Model: ATA SanDisk SSD PLUS (scsi)
Disk /dev/sdb: 1000GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags: 

Number  Start   End     Size   Type     File system  Flags
 1      1049kB  608MB   607MB  primary  fat32        lba
 2      608MB   540GB   539GB  primary  ntfs --> THAT IS WINDOWS :)
 3      540GB   1000GB  461GB  primary  ext4


lsblk
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0    7:0    0 109,1M  1 loop /var/lib/snapd/snap/woe-usb/21
loop1    7:1    0  99,1M  1 loop /var/lib/snapd/snap/core/10958
sda      8:0    0 931,5G  0 disk 
└─sda1   8:1    0 931,5G  0 part 
sdb      8:16   0 931,5G  0 disk 
├─sdb1   8:17   0   579M  0 part /boot/efi
├─sdb2   8:18   0   502G  0 part 
└─sdb3   8:19   0 428,9G  0 part /

efibootmgr
BootCurrent: 0000
Timeout: 1 seconds
BootOrder: 0001,0002,0000
Boot0000* manjaro
Boot0001* Hard Drive
Boot0002* UEFI OS

sudo update-grub
Generating grub configuration file ...
Found theme: /usr/share/grub/themes/manjaro/theme.txt
Found linux image: /boot/vmlinuz-5.10-x86_64
Found initrd image: /boot/amd-ucode.img /boot/initramfs-5.10-x86_64.img
Found initrd fallback image: /boot/initramfs-5.10-x86_64-fallback.img
Found linux image: /boot/vmlinuz-4.14-x86_64
Found initrd image: /boot/amd-ucode.img /boot/initramfs-4.14-x86_64.img
Found initrd fallback image: /boot/initramfs-4.14-x86_64-fallback.img
Warning: os-prober will be executed to detect other bootable partitions.
It's output will be used to detect bootable binaries on them and create new boot entries.
Adding boot menu entry for UEFI Firmware Settings ...
Found memtest86+ image: /boot/memtest86+/memtest.bin
done

[rakin09]

You shouldn’t have deleted that FAT32 partition: it contains the ESP (EFI System Partition) which Windows needs to boot.

What you’ve done is deleted the Windows boot files by deleting that partition, so now you should backup your data and reinstall Windows 10, and reinstall Manjaro afterwards, keeping the FAT32 partition this time and Manjaro still will add its boot files on that partition too.

[Fabby]

I’ve marked this answer as the solution to your question as it is by far the best answer you’ll get.

Windows doesn't find after install Manjaro

You shouldn’t have deleted that FAT32 partition: it contains the ESP (EFI System Partition) which Windows needs to boot. What you’ve done is deleted the Windows boot files by deleting that partition, so now you should backup your data and reinstall Windows 10, and reinstall Manjaro afterwards, keeping the FAT32 partition this time and Manjaro still will add its boot files on that partition too.

However, if you disagree with my choice, please feel free to take any other answer as the solution to your question or even remove the solution altogether: You are in control! (If you disagree with my choice, just send me a personal message and explain why I shouldn’t have done this or or if you agree)

P.S. In the future, please don’t forget to come back and click the 3 dots below the answer to mark a solution like this below the answer that helped you most:

so that the next person that has the exact same problem you just had will benefit from your post as well as your question will now be in the “solved” status.