Solved Is HDD safe to use after LLF?

Asus,acer,samsung,hp / [any]
July 21, 2014 at 04:07:04
Specs: Windows 8, [any]
I have a Samsung external 500GB that has bad sectors. That's why it is so slow and makes Windows to stop respond. I use HD Tune to scan for bad sectors, and it detected 1672 bad sectors. I use HDDGURU Low level format tool and after that, I scanned my hard drive again. It has no bad sectors now. Is it now safe to use again?

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July 21, 2014 at 05:51:16
"Is it now safe to use again?"


When a drive develops a large number of bad sectors the problem is usually progressive and will get worse with time. Don't trust your data to a questionable drive. And always have a backup of your files.

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July 21, 2014 at 06:34:44
✔ Best Answer
I'd be seriously disinclined to trust the drive for anything "serious"... for the reasons that LMiller7 has given you...; and drives are not that expensive nowadays for many of us... So better to invest in new drive; and one hopefully that will last a fair time too... And keep safe/secure copies of your personal files etc. on DVD (at least) and ideally another external HD too; and regularly check them and update accordingly too.

Incidentally is this utility you used a true LLF or one that simply writes zeros to the drive?

A true LLF will render any modern drives useless from what I recall reading way back when... Often an LLF today refers to what was once called a mid-level format (MLF) and this simply overwrites the drive with zeros... Many drive manufacturers used to provide such a utility on their websites; Seagate/Maxtor being just one who had such a utility (if my little grey cells remember correctly). Was (still is) a convenient way to totally blank out (erase after a fashion) all data on the drive; but with a little know how and a few utilities (all legally around) usually that data can be recovered... So not the best method to use if disposing of a drive in one piece... (Safe/r way to really dispose of/destroy a drive... Smash the drive completely, and grind the bits into dust; or burn it after smashing, then grind it, then scatter over the ocean...)

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July 21, 2014 at 15:32:23
Yeah you can't recover spots on the drive that are actually bad. Occasionally for whatever reason spots get marked as bad that really aren't. But as already mentioned, usually when you start getting bad spots you toss the drive and get another.

Is the drive safe to use? Try it for awhile and see. The LLF (the hddguru page doesn't say how 'deep' the formatting goes) probably wiped the bad sector table so you'll need to regularly run chkdsk or other scans designed to detect bad spots to see if they return.

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide.

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