答案1
根据这个答案https://askubuntu.com/a/1286736/1450095,
驱动器已扩展,但文件系统并未扩展。
扩展您的分区以进行引导:
Follow Below steps
1. Boot Ubuntu with Live CD
2. Open Disks App
3. Click on Paritions shows up on the screen
4. Options -> resize option -> fill max available size
5. Options -> Repair File System
Now reboot your Live CD to get into existing installed Image and
now you should see Ubuntu Login Screen