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hard drive - LBA and sector size - Super User 7 LBA itself can apply to any sector size, but hard drive sector sizes have been 512 bytes since the start of the PC, and all hardware and software has been hard-coded with that assumption So rather than wait for new systems and operating systems to support 4K sectors, the drive will appear externally as a 512-byte sector drive
partitioning - What is the difference between LBA and non-LBA IDs . . . Modern OSes are usually able to determine on their own how a drive is supposed to be addressed Even back when LBA addressing was young, and disks were accessed via the BIOS, it should have been possible to simply probe for the availability of the appropriate interrupt 13h calls and fall back to the CHS version if they are absent The additional partition IDs therefore seem redundant What was
hard drive - CHS to LBA mapping - (Disk Storage) - Super User Before LBA you simply had the physical mapping of a disk, which originally disk access with the BIOS on an old a IBM-PC compatible machine would look something like this the following: Cylinder Num
What do the numbers on Western Digital drives mean? There are numerous numbers on a Western Digital drive, MDL (presumably model, ex WD5000BEKT-00KA9T0) -- not sure what the 99KA9T0 is WWN (ex 50014EE25AC8C945) DCM (ex HBNTJBBB) LBA (ex 976773168)
Why does sector-number addressing in CHS start at sector 1 and not 0? Indeed, if we translate the CHS address 0 0 1 to an LBA, the resulting LBA will be 0x00000000 (this is why 1 is subtracted from the sector index in most CHS to LBA calculations, and why 1 is added to the index for LBA to CHS calculations)
Linux and Windows report different physical sector size for Intel . . . I would guess that your disk uses the default LBA Format 0, so it advertises itself as 512 bytes Meaning that the Linux utility you use is entirely right about it However, the Windows utility looks deeper and reports in addition the real physical sector size Both utilities are right, but if the Linux disk driver also allocates disk units of 512 bytes, then performance will be affected a bit
How to move G-List bad sectors into P-List and reassign LBA Here is the trick…During manufacturing, the layout of the LBA blocks occurs by shifting the LBA block sequence past the “Bad” sector The LBA layer simply skips over the identified “Bad” location in the “P” list and continues sequentially in LBA order
Hard drive LBA Error: How to proceed? - Super User Well, that, and perhaps wave our hands wildly in the air for emphasis LBA is an acronym for Logical Block Addressing In this case I assume it is just another, possibly more technically accurate way of referring to a "bad sector" Unless your hard drive is very old, the file system of your OS probably didn't even know anything had happened
boot - MBR vs GPT (Logical Block Addressing) - Super User This is also briefly discussed in the Wikipedia article for logical block addressing: The current 48-bit LBA scheme, introduced in 2003 with the ATA-6 standard, allows addressing up to 128 PiB [ ] However, the common DOS style Master Boot Record (MBR) partition table only supports disk partitions up to 2 TiB in size