I wanted to install ubuntu on dual boot on my computer, but when I was doing the installation, I got "This computer currently has no detected operating systems". The issue is well explain here : http://linuxbsdos.com/2013/02/26/zap-gpt-data-structures-from-a-disk-while-preserving-existing-mbr-partitions/?fbclid=IwAR04J4Q1Cdf7wSwJrV6zKZ5M5zxaOsWiS_CofuBLoI5-P5fFyXPwN0HKbLw Based on that link, "it appears that the SSD had GPT partitions on it before Windows was installed. So the GPT data structures were confusing Ubiquity." and "Presence of MBR and GPT partition tables on the same SSD. That’s why Ubuquity got confused. GPT Partitions gdisk"
So I followed the tutorial, which the goal was to wipe out the GPT data structure and keep the MBR structure.
Unfortunatly (I know, it's my fault), it appears that when I wiped out the GPT data structure, it wasn't my C: disk, but it was my E: disk.
So now, I have a C: disk with windows on it, which is functional, like before. And I have not my E: disk anymore.
First question : What should I do to "reconnect" my E: disk ? Second question : When I wiped out the GPT data structure, did I remove all the datas on the disk ? Can I recover them ?