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2015 Apr 11
0
Bug#782383: Panic: "System without CMOS RTC must be booted from EFI" i.c.w. HP servers
...rvisor in Debian Jessie does not boot on recent HP server hardware (e.g. the current dl360 gen9 series) when using normal "legacy" boot. During boot, it panics with the message "System without CMOS RTC must be booted from EFI". This message was introduced in upstream commit f745566, "x86: honor ACPI indicating absence of CMOS RTC". After reports that this breaks booting on HP servers, because the hardware incorrectly sets the CMOS RTC Not Present flag, a workaround was made in e9425f05, "x86/ACPI: allow CMOS RTC use even when ACPI says there is none"....