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charset="us-ascii" Content-Transfer-Encoding: quoted-printable Hi , I am looking for information/Help. If UEFI passed different information to = OS, in below boot path 1. Enter into Setup menu (By pressing Esc key), On display of UiApp.efi = on console, select device to boot OS 2. Let the boot OS without user intervention from same device as of 1 I could see, UEFI pass different memory map in case of 1 and 2. Is there some other/extra information is being shared with OS/OS Loader. For me, if I use 1) for booting then OS boots okay, If I use option 2) for booting then when user-space prints are printed as g= arbage. Whereas kernel space prints are good on serial console Thanks Udit