I had a dual boot system with 2 systems installed:

  • Windows 10
  • Ubuntu 22.04.3 LTS

So then I stupidly deleted the Windows 10 EFI partition containing the GRUB Bootloader for Ubuntu just to install Windows 11. (If you asked me why I didn’t just update to Windows 11 through the Windows Update, it is because my Windows 10 was kind of corrupted.

And now I can’t boot into Ubuntu. Does anyone have solutions for me to recreate the grub partition?

Here is some info about my partitions:

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Disk 1: Samsung MZVlQ256HAJD-00000 GPT 238.47 GB:

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Name Capacity Used Unused File System Description
n/a 100 MB 32.96 MB 67.04 MB FAT32 Windows 11’s EFI partition
n/a 16 MB 16 MB 0 B Other Windows 11’s reserved partition.
C: 179.02 GB 32.46 GB 146.55 GB NTFS My Windows 11 main drive.
n/a 765 MB 695.69 MB 69.30 MB NTFS Some Windows recovery partition.
n/a 976.56 MB 1.93 MB 974.63 FAT32 Just a partition I created while installing Ubuntu.
n/a 3.81 GB 4 KB 3.81 GB Linux Swap The swap partition for Ubuntu.
n/a 53.82 GB 37.76 GB 16.06GB EXT4 The main Ubuntu partition.

PS: And yes, I have the home and root directories in the same partition.

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Disk 2: Toshiba External USB 3.0 USB, MBR, HDD, 931.51 GB

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Name Capacity Used Unused File System Description
D:Ventoy 31.48 GB 19.81 11.67 GB exFAT This is a Ventoy partition I use to put there ISOs and installing or booting into them.
G:VTOYEFI 32 MB 27.39 MB 4.61 MB FAT16 The ventoy EFI partition.
H: 796.17 GB 179.95 GB 616.22 GB NTFS This is a Windows partition to store some data, do some backups and etc.
E: 53.83 GB 39.38 GB 14.44 GB EXT4 This is a backup of a previously installed Ubuntu system that became corrupted. As it had important files, I keep it here.
F:shared 50 GB 404.48 MB 49.60 GB NTFS A shared partition between linux and Windows. Don’t ask me why I didn’t just use the H partition.

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