Can't boot Win 7 on Dual boot with Mint 18.3 - Different

[onyx_z]

Good Day All,
Thanks very much for this forum, I get a lot of good answers here, but unfortunately, not this one.

I set up my Dell Latitude E6520 as a dual boot with Windows 7 and Mint 18.3 (cinnamon) many months ago. For some reason, one day I booted it, and I can no longer see the Windows 7 entry in the boot menu. I tried "update-grub", but it doesn't see it either.

$ sudo update-grub
[sudo] password
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.13.0-37-generic
Found initrd image: /boot/initrd.img-4.13.0-37-generic
Found linux image: /boot/vmlinuz-4.13.0-36-generic
Found initrd image: /boot/initrd.img-4.13.0-36-generic
Found memtest86+ image: /boot/memtest86+.elf
Found memtest86+ image: /boot/memtest86+.bin
done

I tried boot-repair-disk, and super-grub2, neither helped at all. It's like the windows partition is gone, except it isn't. Using gparted, i can see its still there.

snapshot1a.jpg

It even shows the boot flag. Its /dev/sd1a, over 195GB in size. Last time I used it, it was working fine. I don't know WHY it disappeared from the boot menu, and I can't seem to figure out how to get it back. I don't use the Win 7 partition all that often, and I suspect it MAY have something to do with regular upgrades to the LINUX kernel that blows it away, but I just don't understand why none of the boot menu repair programs can't seem to fix it.

Any help would be Greatly appreciated!

Steve

[JerryF]

According to your attached pic, there's something wrong with that partition. That could have been caused by a number of different things.

I would suggest booting your Windows 7 disk and do a repair of Windows. Then boot a Linux Mint disk and fix grub from there.

FIRST: make a backup of whatever is important.