32-bit 7.1 r2 balky boot

[Jay Michael]

     I have put the 32-bit 7.1 r2 Live on my hard disk.  I boot with grub2.  Several times, when I try to boot, it immediately reboots -- no "Detecting Android..." message.  If I keep selecting the 32-bit 7.1 r2 entry in Grub, on the third or fourth try it boots.

     What can possibly be changing on my hard disk between consecutive boot attempts?

[Jay Michael]

I changed the kernel command line: deleted "quiet", added "verbose".

When it reboots, there are no messages between the initial attempt to boot and the "Dell" logo of the reboot.