Recover Data from HDD with Bad Sectors – Repair Bad Sectors on Hard Disk Drive with Data Back

Bad Sectors on HDD That Leads to Hard Drive Inaccessible 
I got some problems with my Hard disk drive because it says has bad sectors. When I want to access data from the drive it says data error (cyclic redundancy check). So I have two questions here:
1. Can I repair the bad sectors on the hard disk drive?
2. Can I get back lost data after I repair the bad sectors?

When you find your hard disk drive has bad sectors, you may receive a common message "Cyclic Redundancy Check (CRC)". Then you will find data inside the hard disk drive becomes inaccessible, unreadable or missing.

64GB Corsair Voyager Has Bad Boot Sector, How to Recover the Lost Data?

Help! 64GB Corsair Voyager Has Bad Boot Sector

My 64GB Corsair Voyager stopped work when I connected it to my computer. I tried my best to look for the reasons and finally I found there are bad boot sector on my Corsair Voyager. How can I fix the bad boot sector on the Corsair Voyager without losing any data?

Bad Sectors on Hard Disk Drive – How to Repair Bad Sectors and Retrieve Data

How to Deal with Bad Sectors on Hard Drive?

User1: I got a lot of bad sectors on my Seagate hard drive when I use chkdsk. I want to know whether I should do something to fix the bad sectors or not because I don’t find any problem with this hard drive when I write or read data from it. But I am wondering the problem will be worse after I try something to fix the bad sectors. What is the best thing can I do now?

Best Solution for Repairing Bad Sectors on an External Hard Drive

Problem: External Hard Drive Has Bad Sectors & Needs to Be Formatted
I have a Maxtor 500GB external hard drive but there is something wrong with this drive recently. When I insert the external hard drive to the PC, Windows always says the disk drive needs to be formatted before I can use it. But I can’t format it since I have important data inside the external hard drive. I used some software to check the external hard drive and it showed there are some bad sectors on the external hard drive. So I want to know if there is a way that I can repair the bad sectors on my external hard drive without losing the important data.