I have a Dell native Windows 11 on which I have installed a dual boot Ubuntu 25.04.
I was working from Ubuntu and the laptop froze, and I forced the shut-down keeping pushed the power-off button. When rebooted, the system can't boo, it starts a serios of BIOS-like screens where it sorts of scan the system, and when I try to enter the UEFI, it does not even show up the Windows option. The Ubuntu option is still there, but there is no grub at the boot where I can select it, nor it boots Ubuntu automatically. I try to play with the UEFI settings, until I eventually try to reset default and now not even the Ubuntu option is in the UEFI.
What can I do to restore the booting system?
EDIT for more info
$ sudo parted -l
Model: ASolid USB (scsi)
Disk /dev/sda: 126GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:
Number Start End Size File system Name Flags
1 32.8kB 6273MB 6273MB ISO9660 hidden, msftdata
2 6273MB 6278MB 5202kB Appended2 boot, esp
3 6278MB 6278MB 307kB Gap1 hidden, msftdata
4 6279MB 126GB 120GB ext4
Boot-info added at this link.
