Smart HD results - what does Remaining mean?
 

What does 90% Remaining mean in this smart results?

Use code tags (not quote) when posting output - that way we might be able to make sense of it.
I'm guessing it means what it said - it failed onthe read test - 10% of the tests (only) completed.

I updated the post with the code tags, thanks.

So a smart test exits on first error?

Makes sense - you want to know if you have a problem, not potentially destroy the disk trying to find out how many.
ddresue might get you a better idea - and you'll get (some sort of) a backup as well.

Well, the thing is I am on a budget and this drive is only used to back up data occasionally. Aren't bad sectors normal? Does this mean my HD will die soon and I need to replace it?

I rather save the money if possible. But I read somewhere that the summary status just means it's currently not in drive failure.

Here is summary status of it:

Bad sectors aren't normal on a new drive, on older drives it's not unusual. On SSD's it's actually very normal, that's what the overprovisioned space is actually for, it marks sectors as bad, and activates it's extra storage to keep it's full capacity.

If the overall passed, that means that the drive doesn't see imminent failure approaching. Doesn't NECESSARILY mean it's not failing, just that it's own onboard diagnostics doesn't see it coming. I, not having much data that's not easily recoverable other than my music collection (which is backed up 3 different places), would normally just go with the self-assessment. If it passed, I'd assume it's fine.

The drive currently has 62 bad sectors that are pending reallocation. The next time those sectors are written to (which tells the drive that the current contents are irrelevant), they will either be found to be OK or will be reallocated to spare sectors. The drive has thousands of spare sectors. S.M.A.R.T. will not declare the drive to be "failing" until it has used up most of them, but that is far beyond the point that most people would consider the drive to be hopelessly unreliable.

That count of 62 bad sectors is a number that is beginning to become worrisome. The problem is that when a drive begins to develop bad sectors, the problem sometimes cascades rapidly to total failure. It depends on the reason the sectors are bad. If it's actual physical damage to the surface, that can result in bits of dislodged material floating around inside the drive, and that can cause similar problems elsewhere. If it's just that mechanical vibration or an electrical glitch caused a few sectors to be written badly, then the drive can go on for years with no further trouble. It's hard to know which is the case.

In any event, those 62 bad sectors are too many to track down individually using the steps in the Bad Block HOWTO. The most straightforward solution is to save the data elsewhere and zero the entire drive with "dd if=/dev/zero of=/dev/sd{X} bs=1M" (with a suitable letter for "{X}") and then see what S.M.A.R.T. has to say about the drive. What should happen is that the Current_Pending_Sector count will go to zero, while the Reallocated_Sector_Ct will become non-zero. You can then decide what you want to do with this drive.