[SOLVED] Ever 17 save files/system data

[jib123]

I was playing Ever 17 and I almost finally got all the routes except from Tsugumi good ending and Coco's ending. After loading some random save file, and after exiting the save file, I chose "No" as to the save system data. Then I proceed to start a new game to finish Tsugumi good end which I did finished just recently. Now my problem is when I checked the endings list, it only listed Tsugumi End on the endings list

(This screenshot was taken when I'm trying to finish again with my save files)

Yes, even though the so called "system data" wasn't saved, all the save files are there. But I can't skip. Even though I have many save files, the VN won't let me skip coz supposedly, I haven't read them yet even though I actually had.
My question is, how do I restore it to the one where I had all my endings cleared except for the Tsugumi and Coco one? Because it's a real pain when you're trying to reread the VN when you can't use the skip function

[dale]

Data recovery will be tough as hell. 

you can try to boot the computer from a Windows PE and run testdisk (easier to put the hdd in a different machine). 

My advice is to change the settings to skip unread text and finish it once again on skip. 

[jib123]

Thx for the advice. That's what I just actually did. Just reread the VN from the top using skip unread text. Now I'm finally back on track and am able to get Coco's route now.

 

Even though my problem is solved through sheer effort to reread/skip using my existing save files, I still do like to know how to recover the lost data when you make a mistake choosing no as to save system data.