Then take the copy of that copy and work on it. Some people suggest take the copy of SSD. But before testdisk -> Should or Shouldn't I use dd or ddrescue or dd_rescue to copy the disk. I may have deleted the thing that called partition table.Terminal Output (ubuntu-usb): Disk /dev/sdb specs, fdisk -l outputĪfter a lot of anxious reading I have some ideas, questions. Terminal Output (ubuntu-usb): fsck - N /dev/sdb output , File system name was changed to sdb after booting from usb(ubuntu) Terminal Output (ubuntu-usb): fdisk -l output -> sdb. I only used fdisk -l, lsblk -s, df, mount/ umount commands. I didn't write anything on the ssd (as far as I know) after this happened. Right after I unmounted dev/sda2 partition -> /dev/sda1, /dev/sda2, unallocated (1.02MiB), collapsed into 1 unallocated file system. I unmounted ext4 on gparted ( /dev/sda2).(For a second I thought it is better to unmount the ext4 to prevent some mistakes. I delete the EFI system partition ( /dev/sda1).Image (gparted): After deleting EFI and Unmounting ext4 Image (gparted): Information about EFI System Partition /dev/sda1 EFI part already overwritten but ext4 section where Ubuntu is installed is not overwritten. I would like the save the at least home folder.

I followed some instructions yet I failed. boot-repair told me to open 1mb (or something like that) space. I wrote win10.iso file inside of its EFI System Partition with dd command. There is only Ubuntu 20.04 installed in it.

Gparted boot