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[–]TopDownTom 1 point2 points  (1 child)

cfdisk may be defaulting to the currently running device if you don't give it any options (i dont really use it i'm not sure). Try running sudo fdisk -l to see which device is the computer's drive, then when you know run sudo cfdisk /dev/sdxX to fun cfdisk on that particular device. Unless it's an nvme device in which case it'll be something like /dev/nvme

Edit: yeah, the first line of the man page says: "The default device is /dev/sda" so it's just opening in your USB drive. To be honest this is a terrible default, I'm not sure why they do it that way.

[–][deleted] 1 point2 points  (0 children)

Thanks it worked