Hi, so I have my new SSD and I'm about to install it, but before I started the installation I wanted to make sure that my new SSD was fully functional so I connected it via external usb to sata2.5 cable. A message saying "The disk you inserted was not readable by this computer" appeared on screen and I checked and the SSD was actually being shown in the Disk Utility and I could normally do everything you can do in Disk Utility. but my Disk was not shown on the finder window so I'm a little bit worried that my SSD won't work inside the computer. Maybe It's the other way around and until I connect my new SSD in the hard drive internal port it will work perfectly?? Also I researched and this error message problem has happened to a lot of people too, and they say It's just an annoying warning that the computer shows by mistake. But if I can see it in Disk Utility why can't I see it in the finder window? Am I not gonna be able to transfer files from my old hard drive by connecting with the usb to sata cable through the finder window? Or should I just connect my new SSD already to see what happens? Some help would be appreciated.