刷写ubuntu固件提示rootfs分区不够

[erquren]

固件为：AIO-RK3399PRO-JD4-UBUNTU-PYTHON3.5-RKNN-OPENCV-20210108-1430.img
大小为：4.93 GB (5,297,189,336 字节)

androidtool：2.65
硬件：Core_3399Pro_JD4 6G+16G