older MackBook Air after update not booting up at all
older (mid 2011) MacBook Air 121.12GB was trying to install update and now the Apple disk image is saying "Problems were found with the partition map which might prevent booting." I cannot even get the computer to boot up now unless I have a USB install disk in trying to install new OS X El Capitan. Is there any way to delete the update and get my files back?
OR do I have to wipe the whole thing and install new OS?
MacBook Air 13″