My new MBP is driving me crazy! I am tearing my hair out trying to install Windows on an external drive and I've basically come to the conclusion that it's not possible with the hardware I've got. I need to do some work on Windows but I don't really want my limited SSD space being taken up by Windows in the long run. I've tried loads of methods - and the crux of it that the damn machine won't boot from my external SSD. I have tried with various techniques of shoehorning Windows onto an external drive HERE, HERE, and HERE. I've tried VMWare Fusion (free 1 month trial) with Rufus and WinToUSB. I've also tried this method using VirtualBox. I then decided that perhaps it's Windows. So I tried a Linux Ubuntu disk image. That didn't work. Unfortunately I don't have another external drive I can use to try this on. It's a 2018 Macbook Pro 13" Touchbar base model (8Gb Core I5 with 256Gb SSD). The external drive I'm using is a Crucial M4 256Gb SSD with a Sabrent SATA to USB-C adaptor (The latter was chosen because it's supposedly reliable for using with external SSD boot drives). A couple of other points: I'm aware that there is some security setting in Mojave that doesn't allow you to boot from USB without changing some settings (it's been a while and I forget exactly what this was, but it's been disabled). I'm also aware there is an issue with Hybrid MBRs causing a problem. I've checked and I don't have a hybrid MBR (HERE) Edit to add: (Forgot to describe the issue) The ISO etc will appear to have copied properly, and it all looks good. I can select restart from the external ssd in system preferences (no error message at this stage), or alternatively I can boot holding down option for the boot menu. This works and displays my internal storage as well as "EFI Boot" which I think is correct. I know some people report a red cross through this icon, but that's not the case for me. However, if I click on it, the system restarts and boots with an Apple logo (no Windows logo) into Recovery mode. No error message (at least none that I can see). So: Question 1) Am I being stupid, is there anything I haven't tried? Question 2) Assuming I'm not being stupid and it's a hardware issue, what external SSD drive should I buy in order to get all this to work? I have seen a forum post saying that they had issues until they bought a Samsung T3 which worked fine. Those seem to have been superseded by the T5 so should I assume they will work? I would gladly pay the £80 for a drive if I knew it would work, but at this point I am somewhat skeptical and don't want to throw away money on this. Question 3) I know some people suggest using CC Cloner. Is this the REAL answer to my problem? Help!