there is no mountpoint because those partitions are not mounted.
open the file manager and click them!
Or open the terminal and read man mount
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Are you new to Linux? Why did you expect it to be mounted?
Seems like an unmounted usb-installation media to me. Did you leave your usb stick on your pc after installation?
yes, iām new to linux. And i actually made it made it a bootable usb using dd. After using it i tried to format it. and this happened.
For formatting a device, it needs to be unmounted anyways.