Chosen Solution
Aight, so I’ve been a little bit of an idiot recently. Recently out of curiousity, boredom, and some frustration I decided to put my old windows xp (I know, I know. It’d been updated to Sierra and just wasn’t having it, it was able to boot into recovery mode no problem but silly me didn’t want to wait for anything to download and had found my windows xp install disk lying around the day before, so I just went with it) into a MacBook Pro (13-inch, Mid 2009) that I received off a neighbour and went through the entire install process… Then I realised that you can no longer activate winxp, and also that getting drivers would just be too much of a bother. Anyways as I mentioned I was able to boot into recovery mode prior, however now it’ll have the typical grey screen you get at boot up with most macs, and then go black and into the windows boot. I’ve tried several other key combos for different boot modes and the only thing that will do anything (Aside from the ones that triggered things once it started booting into windows) was option, booting it into startup disk selection mode… Where it proceeded to only give me the option to boot into windows. Obviously I’ve done goofed up here, anyways, onto the actual question. Is it possible for me to get Mac OS X back? I’ve got another mac of which has Sierra on it, but I’m also able to download the installs for Mavericks and up from the app store as I’ve downloaded them all previously and they’re still in my purchases tab. I’ve created clean install bootable USBs with these in the past, would these work or has my install of winxp ruined the chances of them working? (I don’t want to go through the entire download process to find out that it doesn’t) Or is there any other easier way to do it?
You should be fine with the USB OS installer you’ve created. But during the Windows XP install I suspect you wiped out the hidden recovery partition. So, you’ll need to wipe the drive down and install the OS afresh.
