只有一个ISO镜像文件如何导入到腾讯云

[root@VM-200-16-tencentos ~]# cat /etc/grub.d/40_custom
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.

menuentry 'Install CentOS8 from ISO' --class red --class gnu-linux --class gnu --class os {
    set isolabel="CentOS-8-5-2111-aarch64-dvd"
    set isofile="/CentOS-8.5-arm.iso"
    insmod iso9660
    loopback loop $isofile
    linux (loop)/images/pxeboot/vmlinuz inst.stage2=hd:LABEL=$isolabel ro iso-scan/filename=$isofile console=tty0 video=efifb:off video=VGA-1:640x480-32@60me
    initrd (loop)/images/pxeboot/initrd.img
}
[root@VM-200-16-tencentos ~]# 

[root@VM-200-16-tencentos ~]# cp  /etc/default/grub{,.bak}
[root@VM-200-16-tencentos ~]# 
[root@VM-200-16-tencentos ~]# sed  -i 's/^GRUB_TIMEOUT=5/GRUB_TIMEOUT=60/g' /etc/default/grub 
[root@VM-200-16-tencentos ~]# grub2-mkconfig --output=/boot/grub2/grub.cfg
Generating grub configuration file ...
Adding boot menu entry for EFI firmware configuration
done
[root@VM-200-16-tencentos ~]# sync

# yum -y install qemu-img  # 安装制作镜像的命令
# qemu-img convert -f raw -O qcow2 /dev/vdb /centos8-arm.qcow2 # 制作镜像