@h3nng @chztv 确实没有登陆 icloud

@DT27 1.资料丢失主要是 safira 部分书签 2.编译的部分程序 东西也不是多，但是要恢复到之前又是几天的时间啊

@jjx @jarlyyn 不准备当主系统用，考虑 termianl 直接 ssh 连接的方法试试

@yushiro 不需要用到 linux 下的 gui ，我进入 gui 也是操作的 terminal ，你说的这个方法我试试，直接 ssh 的话，应该比操作虚拟机还好，可以避免 vm 下 gui 的卡顿，不流畅

@sheenaringo 同病相怜

@wuruxu 因为我本身是个 idev ，所以 macos 还是要的

@shierji 以后可以试试

@gwind 对我来说是个新思路，值得折腾下， 3ks

@SpicyCat 安装 ubuntu 的时候提示识别不到其他系统，默认第一个选项需要格式化整个盘，最后一个选项好像可以选择分区的

@yushiro 切到双系统，因为 vm 的体验不好，安装过程中，脑子不转了

。。。。。。

If both operands have the same type, then no further conversion is needed.
Otherwise, if both operands have signed integer types or both have unsigned
integer types, the operand with the type of lesser integer conversion rank is
converted to the type of the operand with greater rank.
Otherwise, if the operand that has unsigned integer type has rank greater or
equal to the rank of the type of the other operand, then the operand with
signed integer type is converted to the type of the operand with unsigned
integer type.
Otherwise, if the type of the operand with signed integer type can represent
all of the values of the type of the operand with unsigned integer type, then
the operand with unsigned integer type is converted to the type of the
operand with signed integer type.
Otherwise, both operands are converted to the unsigned integer type
corresponding to the type of the operand with signed integer type.