Loss of HD space

  sptsprsn 01:13 11 Nov 14

I have an external hard drive that I was using my computer. It's size is 320 GB, and I was only using about 20 GB of it before the external case I was using started to malfunction. I got a new hard drive case, but the new one would not let me access the files I had on the drive. I ended up, formatting the hard drive, but the disk manager only shows about 298 GB as unallocated space for me to format of the drive.

No matter what I have tried, the other 25-30 GB will not show up anywhere or let me format/partition it.

Are my previous files still somewhere on the drive?

Whether or not they are, how can I get the full use of my hard drive?

Thanks for whatever help I can get.

  wee eddie 10:15 11 Nov 14

I'm not in a position to tell you how to do this but my suggestion may trip someone else's memory.

Windows has an ability to "Show Hidden Files", this may just reveal the Partition that your External Drive has created.

  Secret-Squirrel 10:40 11 Nov 14

"It's size is 320 GB....................I ended up, formatting the hard drive, but the disk manager only shows about 298 GB as unallocated space................."

That's completely normal and happens to all drives after they've been formatted - the "loss" is 7%. I believe the descrepency is due to manufacturer's stated hard drive capacities and what Windows sees as the free space.

As you've formatted the drive and it's showing as "unallocated", there are no files or folders on it.

  wee eddie 15:51 11 Nov 14

Hate to say this but, if you do the maths, it doesn't work out. There's a 15MB discrepancy/shortfall.

Back to square one!

  lotvic 18:18 11 Nov 14

If you google size is 320 GB but only shows as 298GB you will see that this perfectly normal.

  rdave13 19:12 11 Nov 14

Good explanation here, Segate.

You don't lose any space, it's just reported in different measurements.

  Batch 19:23 11 Nov 14

1024 x 1024 x 1024 x 298 = 298GB (your computer)

But also 1024 x 1024 x 1024 x 298 = 319,975,963,552 = 320GB (the disk manufacturer because 319,975,963,552 / 1000 / 1000 / 1000 = 319.975963552 (or 320GB) )

All depends how you calculate it. The disk manufacturers take the number of bytes and use the 1000 method 'cos it makes the drive sound bigger. The computer uses the 1024 method (IMHO the correct method) and hence the apparent loss of space when compared with the disk manufacturers' claims.

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