wimlib

I have a boot.wim thats 1.6 GB. What commands do I use to compress it to the smallest size possible ? I tried wimlib-imagex.exe export --compress=LZX:100 c:\boot.wim 1 c:\boot_new.wim, but its to no avail. Help anyone ?

To recompress data with wimexport when the compression type hasn't changed, you need to pass --recompress.

Note, since your file apparently uses LZX compression already, you won't get much savings.