I found lots of similar topics talking about how to recover deleted partitions I tried several solutions, but nothing worked. In my case, I was installing Archlinux and I used fdisk to format part of the HDD and I found out there's a problem with the partitioning after I've written the changes. Some blocks are overlapping! I lost some sensitive data related to my research work and some pictures (since 2010). Is there any way to safely recover my partitions as it was. Note: I've discovered that after installing Archlinux (about 3G) so I expect to lose some data but I'm willing to recover as much as possible. Thanks in advance.
Note: I use Xubuntu as my main system installed on an SSD drive and the lost files are on my secondary HDD.