Hey kids,

I've gotten myself into a confusing little situation that I'm not quite sure how to get out of, but I'm pretty sure some of you might be able to guide me into back into the light

What happened

  1. Have had OS X (El Capitan) Installed for a while. Legacy Bios. Dell Precision T3500. Everything's (pretty) great.
  2. Wanted to try installing Windows on a separate drive. For whatever reason, I decided UEFI was the go, kind of using Install Windows 8 UEFI on Legacy BIOS with Clover (and Dual boot with Yosemite) as a guide. The crux of that is that I created a UEFI Windows 10 Installation, a new clover USB (set so I can boot the EFI part), disconnected my OS X drive (because Windows hates having friends around when it's installing) and installed away. Successfully, achieved Windows 10 UEFI.

The Problem I can only boot Windows 10 if:

  • My new USB with Clover is booted from
  • My OS X drive is disconnected from SATA-0.
  • Windows drive is plugged into SATA-0.

If I boot from the USB and have OS X connected as SATA-0 with Win10 as SATA-1, the only items that appear in the Clover boot menu are the regular "Boot El Cap", "Boot Recovery" entries. If I disconnect the OS X drive and connect Win10 as SATA-0, I get a "Boot Windows from EFI" entry, which totally works.

I have also made sure that I can successfully boot to OS X from the USB's Clover in case I mash the Clover on my OS X drive

To complicate matters, I always get an error when booting saying a drive can't be found - presumably because I've got SATA-1 enabled, but because the drive is GPT my compute can't see it (due to its legacy bios).

I've been backtracking through all the different posts on the topic, and all I am is confused - I could have sworn that someone had a similar problem to me, but I haven't been able to find it.

Does anyone have any advice on what I can do to get the UEFI Win partition seen at the same time as my OS X partition?

Cheers

submitted by /u/DoubleDroz
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