Hi.
I entered my windows 10 to resize the SWAP partition and then increase the size of the EXT4 Debian file system. After that, when I reboot and try to access Debian I get the error:
I was only able to get to the terminal through DEBIAN RESCURE option in GRUB, but since everything was locked as protected read only and all possible and imaginable commands didn't work I went back to the LIVE CD (USB disk).
Through the live CD I was able to mount the Debian's existing partition, but I wasn't able to neither fix the problem nor reinstall GRUB.

One solution that I tried was:
The first command worked, but "update-initramfs -u" and "update-grub" didn't work since the command was interpreted inside the live CD:
Can anyone provide me with a solution either from the live CD terminal to repair the system or through the reinstallation of GRUB?

I also tried to use Debian's USB installation media to reinstall only GRUB, marking the existing partition (sda7) as "KEEP existing files" and use it as "/", but it didn't allow me to finish the installation. It kept sending me back to the partition table screen every time I tried to finish the installation.

Thank you.

looks like your partition table is corrupted. I don't really know if it can be easily repaired. Can you just reinstall it?

Once you mount the existing Debian partition you should chroot to it and then run the commands you tried, else the commands will be run on the live CD instance. You can chroot by issuing the following command as root:

chroot /path/to/new/root

where /path/to/new/root is where you mounted your debian partition.

- Suramya

Have you tried using your debian-live USB to use Gparted partition editor?
You could then use Gparted to open your debian OS on sda7.
If you can - it may be possible to tidy up any partition irregularities on your hard drive (if there are any).
Then press the 'Apply' button on Gparted.
This may refresh your partition changes - except this time with a gnome-based partition editor.


Nice idea. But I thought the installation media was only to install a debian OS first (and then install GRUB to complete the installation).

You could use the debian installation media to actually install a new debian OS on a new partition.
You could create the new partition with your debian-live USB. After the new install is complete GRUB will be re-installed on the mbr.
However I don't know if this will actually recover your debian OS on sda7.

At the very least you could use your debian-live USB to access the /home directory of your debian OS. Save the /home directory on your debian-live USB (if it has persistence) and then reinstall debian. You can then transfer your saved /home directory to the new install.