On 2013-01-26 19:38, Jim Klimov wrote:
FWIW, I read that EFI/GPT labels have a compatibility mode to SMI/MBR tables, allowing to present (part of) the lower 2Tb as a legacy MBR, and this was specifically a mode to allow booting older Windows and such from newer huge disks.
Ok, I refreshed my google-fu: the EFI/GPT label includes a "protective" legacy (MBR-style, code 0xEE) partition which starts at sector 2 and covers the MIN(whole disk; 2Tb) and thus forbids MBR-only tools from using and partitioning the disk. So it's not compatibility, but... It is possible to create a "hybrid" partitioning table by defining some up-to-three MBR and GPT partitions to use the same boundaries, and then adding a protective MBR-style partition to cover the rest of the disk. This is an unintended method, not standardized and prone to errors with different OSes; still, it was automated with "gdisk". See more here: http://www.rodsbooks.com/gdisk/hybrid.html http://www.rodsbooks.com/gdisk/mbr2gpt.html HTH, //Jim Klimov _______________________________________________ OpenIndiana-discuss mailing list OpenIndiana-discuss@openindiana.org http://openindiana.org/mailman/listinfo/openindiana-discuss
