- Go to **www.esxdos.org** and download either the latest version or the one whose rom comes with the System/Next distribution. For correct operation, the minimum supported version is 0.8.6 beta 4 - Using a PC, Mac or Linux machine, unzip the contents of the *esxDOS* distribution onto a drive, connect the **System/Next™** SD card onto the same computer and then do the following: - Copy the **BIN**, **SYS** and **TMP** folders into the **System/Next™** distribution's root folder - Copy the **ESXMMC.BIN** file from the *esxDOS* root to **c:/machines/next/** - Finally, edit the **config.ini** file in **c:/machines/next/** to include *esxDOS* with the personality you choose (Note that this doesn't apply to Next Native mode) Here is an example that will modify config.ini to use esxDOS with the 128K personality (note that esxDOS will boot any 128K personality in what is called USR0 mode; a special mode where the editor is 48K but all the 128K features are available). After you download the esxDOS distribution archive from the esxDOS site, unpack it and follow the instructions above. Then go to **c:/machines/next/** and using any text editor (for example *Notepad* under Windows) open **config.ini**. Locate the line reading: ``` menu=ZX Spectrum 128k,1,8,128.rom ``` and modify it as follows: ``` menu=ZX Spectrum 128k,1,8,128.rom, esxmmc.bin, ``` Also, if you have an *RTC* chip installed, go to **c:/nextzxos/** and copy **RTC.SYS** to **c:/sys/**. Save it, eject the SD card and transfer it to your ZX Spectrum Next. Upon boot, press **SPACE** and then using the cursor keys, locate the **ZX Spectrum 128k** line. Press **ENTER** and in a few seconds you'll see something like this:  ``` esxDOS v0.8.6-DivMMC © 2005-2013 Papaya Dezign Detecting Devices... sda: Next Mounting drives... hd0: NO NAME, FAT16, 31744KB Loading ESXDOS.SYS... [OK] Loading RTC.SYS... [OK] Loading NMI.SYS... [OK] Loading BETADISK.SYS... [OK] ``` *Fig. 32 – ZX Spectrum Next running esxDOS 0.8.6* That was it, you now have a functioning *esxDOS* installation for your 128K personality on your ZX Spectrum Next computer and the green **Drive** button on the left side of your computer will start functioning calling the esxDOS browser.