If you use WUBI to install Ubuntu, you cannot go to Ubuntu after Windows is reinstalled.

Ubuntu installed through WUBI forms a Windows and Ubuntu dual systems. However, after Windows is re-installed, does it find that the Ubuntu option is unavailable when the system is started? In fact, there is a very convenient way to re-display it: copy the wubildr. mbr and wubildr files under the Ubuntu directory you installed through wubi to the c disk. Edit the boot. ini file in the root directory of the C drive. By default, it is system-level hidden and read-only. Add this line in it

Ubuntu installed through WUBI forms a Windows and Ubuntu dual systems. However, after Windows is re-installed, does it find that the Ubuntu option is unavailable when the system is started? In fact, there is a very convenient way to make it appear again:

Copy the wubildr. mbr and wubildr files in the Ubuntu directory you installed through wubi to the c drive. Edit the boot. ini file in the root directory of the C drive. By default, it is system-level hidden and read-only. Add this line in it

C: \ wubildr. mbr = "Ubuntu"