终于入手树莓派4B
安装64位centos8后
（仅找到一个镜像）不支持wifi，不识别（已解决）。
驱动下载
系统加载后根目录2.2G，我用的64GSD卡
几经尝试FDISK，Parted，这些咱都没玩儿明白。
无法加载剩余的容量
最后还是官方说明一条命令搞定。
/usr/bin/rootfs-expand
以下是说明内容
If you want to automatically resize your / partition, just type the following (as root user):
/usr/bin/rootfs-expand
查看磁盘正常
df -h
下图是我用32G卡做系统留的
[root@bogon ~]# /usr/bin/rootfs-expand
/dev/mmcblk0p3 /dev/mmcblk0 3
Extending partition 3 to max size ....
CHANGED: partition=3 start=1593344 old: size=3516416 end=5109760 new: size=59060191 end=60653535
Resizing ext4 filesystem ...
resize2fs 1.42.9 (28-Dec-2013)
Filesystem at /dev/mmcblk0p3 is mounted on /; on-line resizing required
old_desc_blocks = 1, new_desc_blocks = 4
The filesystem on /dev/mmcblk0p3 is now 7382523 blocks long.
Done.
[root@bogon ~]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/root 28G 1.2G 27G 5% /
devtmpfs 901M 0 901M 0% /dev
tmpfs 934M 0 934M 0% /dev/shm
tmpfs 934M 17M 918M 2% /run
tmpfs 934M 0 934M 0% /sys/fs/cgroup
/dev/mmcblk0p1 286M 51M 236M 18% /boot
tmpfs 187M 0 187M 0% /run/user/0
[root@bogon ~]# nmcli d
DEVICE TYPE STATE CONNECTION
eth0 ethernet connected Wired connection 1
wlan0 wifi disconnected --
p2p-dev-wlan0 wifi-p2p disconnected --
lo loopback unmanaged --
[root@bogon ~]#