Hex fiend load table code#

Two other items also appear in this diagram: 1) The thin violet/purpleĮ1 A8 E1' shows an example of an NT Disk Signature (also Within the thin YELLOW line in the diagram above. The upper-right corner of the table, you'll see a byte with the value The sector's Word-sized Signature ID of AA55h oftenĬalled its Magic number in older tech documentation.

Hex fiend load table code#

Is usually the boot partition on most hard disks [ the 80hīyte tells the Bootstrap Loader code (the MBR code) which partition it is supposed Most HDDs have these bytes, since the first partition This is the first byte in the first Partition entry, and it's followedĠ1 00. (CHS 0,1,1 in this case which corresponds to Absolute Sector 63 of this To try loading a Boot sector from into Memory only one partition entry (atīoot-up) can have the 80h byte here ] and because the next threeīytes are the CHS values for the Starting Sector of the first partition #FIND PARTITION HEX FIEND CODE# = 14,105,070 sectors (don't forget that both the Cylinder and Head counts begin with a zero), and then subtracting Example: The Last Sector CHS values ( 877, 254, 63)Ĭan be used to check the Total number of Sectors by first computing: 878 Than 8.4 GB, the Starting and Ending CHS values and the Total Sector value couldīe checked against each other which might help to correct an error for a manualĮntry in the Table. The calculations for the rest of this drive's partition table, we need to point The 63 sectors which preceded it to arrive at: 14,105,007 sectorsįor its Total size or length. Partition, this drive has three Primary partitions and thenįirst 16-byte Entry in our Partition Table Instead of a single Primary partition followed by an Extended Out that this isn't the typical layout for a drive created by a Microsoft OS.