The annoying thing about flash disk is when your flash disk is not auto mount by slackware. I have this happen in my busy day. Actually the references I read, suggested to restart the computer. But hey I don’t want to do the hard way. Let’s do it in soft way.
So I try to do it without restarting the computer, the theory is just restart udev and messagebus
Try to replug the flash disk.
And it’s work. hehe ^_^