I bought a used MBP. I didn't think the previous owner had wiped it before selling it to me. I created a High Sierra bootable USB on a 2013 MBP, booted the 2011 into recovery and wiped the drive via disk utility. I tried installing via the bootable USB. I see the USB, can select it, it looked like it was installing, then I got the Recovery screen again. After a bit of research, I decided to try doing the same with Mavericks, but wasn't successful in creating a bootable USB with the files I was able to download. I posted elsewhere in MacRumours and someone suggested I try one of the other supported OS's for the MBP, so I downloaded Yosemite onto a late-2013 iMac running High Sierra and tried creating a bootable USB via Terminal, but that didn't work. A little more research, and using DiskMakerX I was able to create the bootable Yosemite USB.
I again tried installing on the 2011 MBP and got the same result as the first time: I see the USB with the Yosemite installer, select it, it looks like it's installing, but then it reverts to Recovery.
The only oddity I noticed about the 2011 MBP before I formatted the drive was that I kept getting a message that the date was set to (either) 2006 or 2009.
I thought that somewhere in my research, I saw that there was a way to reinstall the OS using Disk Utility and Restore, but I can't find it now. Is this possible? Is there something else I can try?
I again tried installing on the 2011 MBP and got the same result as the first time: I see the USB with the Yosemite installer, select it, it looks like it's installing, but then it reverts to Recovery.
The only oddity I noticed about the 2011 MBP before I formatted the drive was that I kept getting a message that the date was set to (either) 2006 or 2009.
I thought that somewhere in my research, I saw that there was a way to reinstall the OS using Disk Utility and Restore, but I can't find it now. Is this possible? Is there something else I can try?