Dude 6.43.7 CHR on ESX 6.5.0 U1 read only fs

i’ve been created a vm on my server, create a second hdd of 16GB and mount vmdk image downloaded from mikrotik’s website ad first disk, the system boot regularly but on the console appear the following message
mv: unable to rename ‘/rw/autorun.scr’: Read-only file system
After log-in i change password, ip, sefvices and gateway and also activate my p-ulimited license but, at next reboot the rOS boot again with no password, ip, services and license.

What i do wrong?