Various other meanings include writing zeros to all blocks, configuring the drive to disable "hidden" areas such as HPA and DCO and then zeroing all blocks, or other things more related to partitioning than formatting. Modern IDE and SATA hard drives are low-level formatted too, but only at the factory. Early MFM and RLL PC hard drives could be low-level formatted, often using a utility built into the hard drive controller's (an ISA card) ROM. Low-level formatting a floppy prepares the disk to be able to read and write blocks. In this way the head can detect when it is A) on a track and B) where it is on the track. The original meaning was a step needed in the formatting of disks - disk drives need header, sync and other patterns written on the media before it can store data to it. Low-level formatting means many different things to different people and on different contexts.
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