Mac Pro (Mid 210)Since installing El Capitan on new HGST 6T drive I can ONLY boot this system by resetting NVRAM. If I try to restart I get apple, progress meter, then circle with line through it symbol. System has another separate drive with OS Mavericks. This drive can be set as startup drive and can boot with restart.I tried ....Boot to recovery mode, run disk utils on all drives...all fineMoved all kernel extensions not found in recovery partition out of /Volumes/bhgstboot/Library/Extensions....still won't boot without resetting NVRAMTry setting startup disk from system preferences. Click unlock, select my hgst drive, click on lock (does not let me lock). Sometimes it comes back with error from bless, most times it just hangs4 # bless --info /Volumes/bhgstbootfinderinfo[0]:     56 => Blessed System Folder is /System/Library/CoreServicesfinderinfo[1]: 8908212 => Blessed System File is /System/Library/CoreServices/boot.efifinderinfo[2]:      0 => Open-folder linked list emptyfinderinfo[3]:      0 => No alternate OS blessed file/folderfinderinfo[4]:      0 => Unused field unsetfinderinfo[5]:     56 => OS X blessed folder is /System/Library/CoreServices64-bit VSDB volume id:  0x7254F8914231C18Csystemsetup doesn't see bhgstboot drive8 # systemsetup -liststartupdisks/Volumes/bootableOS_wd4T/System/Library/CoreServices/System/Library/CoreServices10 # systemsetup -getstartupdiskIf I startup holding down option /Volumes/bhgstboot shows up , I can select it but after Apple logo and progress bar , I get circle with line through it.The ONLY way I can boot from this drive is by holding down Cmd-opt P-Rany ideas?
El Capitan 10.11.15 can't set disk with OS as startup disk, only boots if I reset nvram
osx;hard disk;startup