Christian wrote: > On mer, 2011-11-09 at 00:16 +0100, Christian wrote: >> Hi, >> >> I created a GPT table on a file (1 MB), using parted 2.2. >> Looking at the hexdump seems that the CHS-start-sector of the GPT >> partition may not be correct. Those are MBR (64 byte) partitions: >> >> Status CHS Type CHS LBA start LBA sectors >> 00 000100 EE FEFFFF 01000000 FF070000 >> 00 000000 00 000000 00000000 00000000 >> 00 000000 00 000000 00000000 00000000 >> 00 000000 00 000000 00000000 00000000 >> >> CHS start bytes are HEAD: 00, SECTOR: 01 CYLINDER: 00. >> >> Using the formula: >> >> LBA = (CYL * NHEADS + HEAD) * NSECTORS + SECTOR - 1 >> >> LBA = (0 * 4 + 0) * 32 + 1 - 1 >> >> LBA = 0 >> >> But the GPT header is at LBA 1 (as the LBA start field 01000000). >> >> This is an error or CHS values are ignored? >> >> Many thanks! >> >> Christian. > > Parted 3.0 have this "error" too.
Thanks, but it's not an error. That first sector is called the protective MBR. Note the "type" of EE. https://secure.wikimedia.org/wikipedia/en/wiki/GPT_Disk
