please could you help, I recently installed Ubuntu 18.10 on my windows 10 machine without configuring the UEFI settings on windows,upon installing ubuntu I opted for something-else in the installation menu as not to format or loose my windows files and documents,
I then created a 40 Gig partition in which to run Ubuntu 18.10, everything went fine or so I thought until I restarted the machine and realized that i could no longer boot into windows nor did I get an option as to boot into Windows or Ubuntu, but instead Ubuntu would just load on start-up.
Basically I can no longer boot into Windows after the installation and am extremely worried and stressed as all my important files and documents are on the windows OS, as a matter of fact I hadn't imported nor saved any of my files to the Ubuntu OS which is currently file-less,
furthermore i did try a command in the terminal as see if Grub would fix my boot problem regarding my windows OS which did not solve the problem, i further tried to view the available partitions in the terminal however my windows partitions would not show,this is what lsblk returns in the terminal
e@E-PC:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 298.1G 0 disk
└─sda1 8:1 0 298.1G 0 part /
sr0 11:0 1 1024M 0 rom
e@E-PC:~$
PLEASE could you help me, I really need to recover and use the files on my windows OS.