I was trying to increase size of /dev/sda1 in VMware workstation, and followed a suggestion to unmount /dev/sda1, becuse of error "device busy".
so i umounted and now i can't boot it.
i get "Operating System not found"
The host is windows 10, guest is Ubuntu 16 (command line, no GUI)
How can i mount back sda1?
Maybe i can boot VMware instance via LiveCD and do something there?
I started from iso and created partition from fdisk so now i can access shell and /dev/sda1 from rescue console.
But original install still doesn't boot.
I marked sda1 as
Boot * but it still not boot the guest.
In rescue console i can Reinstall GRUB boot loader. Should i try it or can it destroy data on disk?