Q: I think I accidently deleted everything.

99metanight wrote:

 

Ok, to start out, I have a 13" MacBook pro mid-2012 model with 4gb of RAM, and it was running OS X 10.10.3 Yosemite, and using boot camp with windows 10(somehow I messed up this installation and windows barely worked at all anyways)

Now I wanted to upgrade it to El Capitan but whenever I started the upgrade utility and it got to the "select the disk below on which you want to install  El Capitan" I was unable to select either partition on my HD. So I had this brilliant idea, if I delete the windows partition on my computer it could fix my problem, so I delete the partition and reboot my computer. Bad news, now my computer is showing the circle with the line through it, and no startup bell. So I decide to start in recovery mode, and the computer wants me to restore to Mavericks, but once again I cannot select a disk to install on, but now my HD partitions are not listed at all. Though if I start disk utility there's still one partition named "diskOs2" which cannot be modified at all, and if I try to create a new partition it just sits there at waiting to create a partition. Please help.

I suspect you need to reformat the drive with one partition,  from the DiskUtility.app in the Internet Recovery (command option R.)

If this is not possible, then the drive has failed.

Hopefully you have a back up to restore your data.

99metanight wrote:

 

Thank you, this solved my problem.

Good computing 99metanight !