I created a new partition on Windows from unallocated space (I already had 4 primary partitions, so it seems it created a dynamic partition), then when I reboot I enter in the GRUB Rescue.
instmod and then I could boot to Ubuntu.
I tried to install GRUB with boot-repair and from command line
Using boot repair
First I get the error
SFS detected. You may want to retry after converting Windows dynamic partitioning (SFS partitions) to a basic disk
Then I just continued with boot repair and
GRUB failed to install to the following devices: /dev/sda
sudo update-grub sudo grub-install dev/sda
I get the same GRUB failed to install as I mentioned above
Using bootable usb
I tried boot repair and I get the same errors as when using it on PC.
Windows is not booting, when trying I get:
error: device format "lad/a1eb ... /volume1" invalid must be (f|h)dN with 0<=N<128