Installing RasPlex onto SD card using other OS?

Hi, I was wondering if I would just copy a set of files onto the SD card, without the installer, if I was using some other OS?
The only card reader I have is in my around tablet, but I can still copy files to the device.

No, you need to use one of the installers as its not just a thing of copying some files but setting up the partitions
Get one USB to microSD reader, they are dirty cheap

You also have installers for windows, OsX and Linux
http://www.rasplex.com/get-started/rasplex-installers.html

Hmm, their do appear to be SD card partition apps for android.
I am trying to get a sd card reader, but any possible way I could get detailed instructions or how rasplex can be set up manually? Clearly their are easier ways, assuming you have the hardware handy. But it might be useful for me or others to have a way to do it manually assuming we use other OSes, just do not have a non tablet computer, or are hours away from the nearest store and our SD card reader just broke.

If you rooted your device nothing stops you from dd it from terminal

gunzip image_name.img.gz
blkid # find out what device you want to flash to, /dev/sdX
dd if=image_name.img of=/dev/sdX bs=1MB #BE VERY CAREFUL you select the right value for X

http://www.rasplex.com/get-started/download-rasplex.html

But to be fair if you dont have access to a PC nothing stops you from doing it from raspbian if you have and microusb to usb adaptor and an extra SD