[ 0.420074] Starting Exein[ 0.420074] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block[ 0.420136] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.10.0-693.17.1.el7.x86_64 #1[ 0.420208] Call Trace:[ 0.420240] [<ffffffff816a6071>] dump_stack+0x19/0x1b[ 0.420301] [<ffffffff818b4032>] panic+0xe8/0x20d[ 0.420312] [<ffffffff832a8641>] mount_block_root+0x291/0x2a0[ 0.420345] [<ffffffff841f7784>] mount_root+0x53/0x56[ 0.420389] [<ffffffff843b6071>] ? rest_init+0x80/0x80[ 0.420432] Kernel Offset: disabled[ 0.420654] 404 Exein not found[ 0.420789] Click anywhere or press any button to restart