This question already has an answer here:
I have a big problem with my computer...
I have reduced the windows partition and when I reboot then I have the grub rescue with the error message: "no such partition".
Moreover, I don't have access to the bios and so it seems impossible to change the boot sequence to boot on my live usb or live cd.
The command line
ls gives me:
(hd0) (hd0,1) (hd0,2) (hd0,3)
I have a recovery windows partition (1 I think), a windows partition and a linux partition.
Yet, the command lines
ls (hd0,2) and
(hd0,3) gives me the error message: "unknown filesystem" and so I can't set a boot anymore.
Do you have any idea?