New Member
Hello everyone. Hope you are doing ok.

I have an Asus Laptop X407UB with 4 Intel® Core™ i3-6006U CPU @ 2.00GHz processors, 12 GB RAM and 1 TB of disk storage.

Today, I decided to dual boot Ubuntu 20.04 LTS with Windows 10, but, since I installed Ubuntu to my computer, my Windows doesn't even boot anymore.
It was because I installed Ubuntu and Windows 10 at the same partition: Ubuntu occupies half of the partition, and Windows 10 occupies another half.

I wanted to know if I could create a partition and "grab" the Windows 10 data to that new partition.
Any details you want to know, just tell me in the replies.

Thanks for your support!


Principal Cybersecurity Architect
Staff member
You can't install two OSes on the same partition, there is likely an additional partition containing Ubuntu. You should be able to boot into a Ubuntu rescue disk, remount the partitions as rw, run the chroot command and update grub. That typically should fix boot.