basplaces.blogg.se

MBR-based partition table schemes insert the partitioning information for (usually) four "primary" partitions in the master boot record (MBR) (which on a BIOS system is also the container for code that begins the process of booting the system). #WINTOUSB SECTOR SIZE NOT SUPPORTED CODE# In a GPT, the first sector of the disk is reserved for a "protective MBR" such that booting a BIOS-based computer from a GPT disk is supported, but the boot loader and O/S must both be GPT-aware.

Regardless of the sector size, the GPT header begins on the second logical block of the device. GPT uses modern logical block addressing (LBA) in place of the cylinder-head-sector (CHS) addressing used with MBR. Legacy MBR information is contained in LBA 0, the GPT header is in LBA 1, and the partition table itself follows. In 64-bit Windows operating systems, 16,384 bytes, or 32 sectors, are reserved for the GPT, leaving LBA 34 as the first usable sector on the disk. Ĭompared with MBR disk, A GPT disk can support larger than 2 TB volumes where MBR cannot. #WINTOUSB SECTOR SIZE NOT SUPPORTED PC#.#WINTOUSB SECTOR SIZE NOT SUPPORTED CODE#.