how to fix a corrupted hard drive on mac

It can be the most annoying thing to happen to a user. Type a few hundred words in a Word document and hit Ctrl + S, and it takes several seconds.

What Happens When A Hard Disk Firmware Is Corrupted?įirmware corruption can lead to several types of problems, all of them severe. There may be many more that are more extensive. This is a simple example of firmware corruption. If in the meantime the user shuts down the computer without waiting for the delay, there is a possibility that the firmware might get corrupted. Maintaining the data means writing it, and that can take a few seconds.

It can tell how many power on-off cycles it has been through, write error, read error and several such parameters. The Self-Monitoring, Analysis, and Reporting Technology performs complex diagnostics on its operations and maintains the data lifelong.įor example, even if you last formatted a desktop three years ago, it can tell you the highest, lowest and mean operating temperature every day since then. That is very important to get the HDD and the computer to boot.Įvery modern drive has SMART capability. Inside this Service Zone (as different from Data Zone) the number of sectors is less and can be read faster. It is part of the Service Zone or the place the HDD has reserved for its own use. The firmware, of course, does not share the sector or block with other data.

How to fix a corrupted hard drive on mac