实测ubuntu18无法在RaspberryPi48??GB上运行，原因不明。会出现如下错误：recover4.elfnotfoundrecovery.elfnotfoundstart4.elfnotfound安装ubuntu20可以正常进入系统，所以这就变成了树莓派48GB版安装ubuntu20教程首先改软件源（清华源）debhttp://mirrors.aliyun.com/ubuntu-portsfocalmainrestricteddebhttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesmainrestricteddebhttp://mirrors.aliyun.com/ubuntu-portsfocaluniversedebhttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesmainrestricteddebmirrors.aliyun.com/ubuntu-portsfocal-updatesuniversedebhttp://mirrors.aliyun.com/ubuntu-portsfocalmultiversedebhttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesmultiversedebhttp://mirrors.aliyun.com/ubuntu-portsfocal-backportsmainrestricteduniversemultiversedebhttp://mirrors.aliyun.com/ubuntu-portsfocal-securitymainrestricteddebhttp://mirrors.aliyun.com/ubuntu-portsfocal-securityuniversedebhttp://mirrors.aliyun.com/ubuntu-portsfocal-securitymultiversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocalmainrestricteddeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesmainrestricteddeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocaluniversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesuniversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocalmultiversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-updatesmultiversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-backportsmainrestricteduniversemultiversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-securitymainrestricteddeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-securityuniversedeb-srchttp://mirrors.aliyun.com/ubuntu-portsfocal-security多元宇宙
