Hard disk problem pop up warning

"The ""reallocated sector count"" indicates that the drive has had to move data from bad sectors into the area it reserves for this purpose, but has done so more times than is healthy - i.e. it thinks it will run out in the not too distant future than any even slightly iffy sector could result in data loss. It isn't too bad yet, hence that flag is registered as a warning not a failure, but you really should replace the drive sooner rather than later.

What attribute B8 is I don't know. You will probably be able to look this up in the manufacturer's online documentation if you know the exact make and model of the drive. What-ever it indicates, the drive itself thinks the situation is bad enough to consider itself failing. This probably means you should replace the drive ASAP."

"The ""reallocated sector count"" indicates that the drive has had to move data from bad sectors into the area it reserves for this purpose, but has done so more times than is healthy - i.e. it thinks it will run out in the not too distant future than any even slightly iffy sector could result in data loss. It isn't too bad yet, hence that flag is registered as a warning not a failure, but you really should replace the drive sooner rather than later.

What attribute B8 is I don't know. You will probably be able to look this up in the manufacturer's online documentation if you know the exact make and model of the drive. What-ever it indicates, the drive itself thinks the situation is bad enough to consider itself failing. This probably means you should replace the drive ASAP."