Sectors, Clusters, Blocks

Bytes are stored on devices grouped by 512 bytes in one SECTOR. Sectors are numbered from sector 0.

File Systems introduce group of sectors (usually power of 2 multiple of sectors) to allow higher capacity and faster handling. Sectors are groupes in « clusters » or « blocks », depending of the OS used. If the name is different, it represent exactly the same thing : a group of sectors.

Tyrhex shows the offsets in bytes and sectors. When a volume is selected, offset in byte ,sectors and block relative to the volume start are shown.  As without volume selected the « block » or « cluster » value is a non-sense, there is no way to show blocks relative to the device start and some Tyrhex decoding features are then limited.

tyrhex © Yves Vandermeer  2015-2017   #tyrhex