Cygwin flash processing (small experience)

Because a computer in the house has a relatively low configuration, it can be used for parents, not Linux, and cannot run virtual machines. But every time I go back, I always want to play with Linux, so I think of installing a cygwin, I packed cygwin on my computer and put it on that computer. I chose to use a local library for installation. The installation was very fast (because no download was required, it would take 2-3 hours for online installation ), however, when cygwin is turned on, the screen flashes through. This is also the case when DOS is used.
Then, find a solution on the Internet. It seems that none of them are suitable. Finally, find a cygwin. BAT file in your cygwin installation directory to record the directory of your installation library, and modify it here.
Cygwin. bat

@ Echo off

D:

Chdir D: \ Program Files (x86) \ cygwin \ bin -------> modify the directory to which your library is installed. You can.

Bash -- login-I