HDD/SSD file corruption

[rockman413]

I'm not asking how HDD or SSD manages sectors.

My question is:
1. If an HDD/SSD have bad sectors, I use it to transfer files to my other computer, will my other computer get any corrupted files?
Or
As long as my other computer can read/copy the files without any errors, then I can fully trust all copied files are non-corrupted ?

2. If I write files to a good HDD/SSD, and later it got hit the ground/got damaged and may have new or even a lot of bad sectors- meaning my previously written files are now on bad sectors. So I copy them out to my other computer, am I going to get corrupted files? or as long as I can copy them out without any error, all files are exactly the same as the original fils?

 

[R_1]

any data in the corrupted sectors are gone. if the corrupted sectors housed file data the file is now missing a piece and is corrupted/damaged. depending on the file type and whether it can cope with missing data. example-Jpegs can be opened even damaged

if the damage is confined to free space all files will transfer fine.

 

[rockman413]

"example-Jpegs can be opened even damaged"
But is this JPEG exactly the same as the original ones? This is important for Professional JPEG/photo workers that they want to make sure they are getting the best in all aspects.

 

[R_1]

"example-Jpegs can be opened even damaged"
But is this JPEG exactly the same as the original ones? This is important for Professional JPEG/photo workers that they want to make sure they are getting the best in all aspects.

no there will be missing information if the data was on a bad sector.

think of the files like a pamphlet, the information is spread across its pages. a bad sector is like having a child rip pages out. the rest of the booklet is undamaged. the rest of the file is available but it is not the exact same as the original. unless there is some form of backup the data stored on a bad sector is gone.
other file types may not even open if there is damage to the file.

there is a program called spinrite 6, it performs what I call a check disk on steroids. it will attempt to read every bit of data on the drive, when it finds a bad sector it has various techniques for reading the bad sectors and might be useful. it is expensive.
https://www.grc.com/sr/whatitdoes.htm
this video explains more in depth.