I’m tring to install lubuntu 18.10 on a Lenovo G580 where I had windows10.
Probably I made some errors and now during installation the partitions cannot be read and the installation program gets closed.
fdisk gives to me these information:
Just use the “erase disk” option then. If you don’t see it, make sure you have unmounted all partitions. In particular, your swap partition will get automounted by the core Ubuntu system. You can sudo swapoff -a to resolve that, as mentioned in the manual.