From: Davidlohr Bueso <davidl...@hp.com> The usage of the 'gpt' kernel parameter is twofold: (i) skip any mbr integrity checks and (ii) enable the backup GPT header to be used in situations where the primary one is corrupted. This last "feature" is not obvious and needs to be properly documented in the kernel-parameters document.
References: https://bugzilla.kernel.org/show_bug.cgi?id=63591 Signed-off-by: Davidlohr Bueso <davidl...@hp.com> --- Documentation/kernel-parameters.txt | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 50680a5..1e353a4 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1013,7 +1013,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. debugfs files are removed at module unload time. gpt [EFI] Forces disk with valid GPT signature but - invalid Protective MBR to be treated as GPT. + invalid Protective MBR to be treated as GPT. If the + primary GPT is corrupted, it enables the backup/alternate + GPT to be used instead. grcan.enable0= [HW] Configuration of physical interface 0. Determines the "Enable 0" bit of the configuration register. -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
