I wanted to install an ISO of Linux on a regular CD, sadly it was installed on my external backup HDD which i had on my computer. Now i have an ISO image ~2gb on it. As i said it is my backup HDD, so the data on it is really important. How can i remove the ISO and get my data back?
I already installed testdisk and making an analysis with it if i can somehow restore it. Sadly I am not an expert in recoveries, i luckily never had to do one.
Searching the internet I mainly found how to recover ISOs on usb flash drives. Since I am pretty new to Ubuntu, I would massively appreciate a step by step guide, if possible.
Filesystem Size Used Avail Use% Mounted on
udev 4,1G 0 4,1G 0% /dev
tmpfs 823M 2,2M 821M 1% /run
/dev/sda2 248G 29G 207G 13% /
tmpfs 4,2G 68M 4,1G 2% /dev/shm
tmpfs 5,3M 4,1k 5,3M 1% /run/lock
tmpfs 4,2G 0 4,2G 0% /sys/fs/cgroup
/dev/loop0 91M 91M 0 100% /snap/core/4571
/dev/loop2 210M 210M 0 100% /snap/gimp/40
/dev/loop1 34M 34M 0 100% /snap/gtk-common-themes/3
/dev/loop3 91M 91M 0 100% /snap/core/4650
/dev/loop4 37M 37M 0 100% /snap/gtk-common-themes/319
/dev/loop5 129M 129M 0 100% /snap/winds/63
/dev/loop6 166M 166M 0 100% /snap/gitkraken/62
/dev/loop7 166M 166M 0 100% /snap/gitkraken/58
/dev/loop8 190M 190M 0 100% /snap/vlc/190
/dev/loop9 496M 496M 0 100% /snap/intellij-idea-community/48
/dev/loop10 4,0M 4,0M 0 100% /snap/gnome-system-monitor/41
/dev/loop11 97M 97M 0 100% /snap/zenkit/1
/dev/loop12 223M 223M 0 100% /snap/gimp/39
/dev/loop15 107M 107M 0 100% /snap/bitwarden/4
/dev/loop16 147M 147M 0 100% /snap/gnome-3-26-1604/64
/dev/loop14 131M 131M 0 100% /snap/ghost-desktop/46
/dev/loop13 65M 65M 0 100% /snap/pencilsheep/5
/dev/loop17 4,0M 4,0M 0 100% /snap/gnome-system-monitor/45
/dev/loop18 218M 218M 0 100% /snap/gimp/38
/dev/loop19 208M 208M 0 100% /snap/vlc/365
/dev/loop21 496M 496M 0 100% /snap/intellij-idea-community/51
/dev/loop20 94M 94M 0 100% /snap/ktube-media-downloader/2
/dev/loop22 11M 11M 0 100% /snap/dosbox-x/11
/dev/loop23 91M 91M 0 100% /snap/simplescreenrecorder/1
/dev/loop24 543M 543M 0 100% /snap/supertuxkart/8
/dev/loop25 154M 154M 0 100% /snap/skype/30
/dev/loop26 543M 543M 0 100% /snap/supertuxkart/6
/dev/loop27 4,0M 4,0M 0 100% /snap/gnome-system-monitor/39
/dev/loop28 11M 11M 0 100% /snap/currate/5
/dev/loop31 144M 144M 0 100% /snap/skype/33
/dev/loop29 166M 166M 0 100% /snap/gitkraken/54
/dev/loop30 130M 130M 0 100% /snap/winds/64
/dev/loop32 166M 166M 0 100% /snap/inkscape/4019
/dev/loop33 266M 266M 0 100% /snap/electronic-wechat/7
/dev/loop34 96M 96M 0 100% /snap/vectr/2
/dev/sda1 536M 4,9M 531M 1% /boot/efi
tmpfs 823M 17k 823M 1% /run/user/121
tmpfs 823M 99k 823M 1% /run/user/1000
/dev/loop35 496M 496M 0 100% /snap/intellij-idea-community/58
/dev/sdb1 2,1G 2,1G 0 100% /media/rhu/Ubuntu-MATE 18.04 LTS amd64
