Before a PC can access a drive, it must first read various disk structures: the boot sector, master boot record (MBR), partition table, and so on. Normally you don’t have to care about any of that, but if these structures are corrupted, and the drive becomes unreadable, then you might want to know more.
HDHacker is a tiny tool which can read, display, save and restore a drive’s master boot record, boot sector, or just a defined number of continuous sectors. This is potentially very dangerous – choosing the wrong drive or sectors could trash your system – but it can sometimes be helpful.
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