Storage Solutions Does HDD eat space over time???

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nac

nac

Forerunner
Recently i happened to format my rig, that caused to ask doubts here.

My HDD capacity is 160GB
First time when i installed OS (9 months back), i had been allocated 149GB for partioning. I dont know what happened to the balance 11GB. I asked my friends about this, they said "depends on rig configuration it will take"
So i didnt mind much about that.
I formatted my rig recently (two days back), now its only 127GB. I dont know what happened to 22GB. I asked few, they said, "it may be because of bad sectors" I dont see bad sectors in this 9 months.
Even if thats the case, will it be 22GB??
Already 11 and now 22 totally i lost 33GB.
What should i do to get it back?
Is there is any solution?
If yes, will it cost a lot?
Please give solution to get back the lost space...

Note: Please find MY RIG GALLERY to get the full rig configuration, if needed.
 
Now I dont know if you know this, but there is a difference in how space is calculated by these companies vs what we are commonly are used to.

eg: a 250 GB HDD by our common knowledge is 250 x 1024 MB = 256000 MB
however the HDD and DVD/CD/HDD makers calculate the same space as such below

250 GB = 250 x 1000 MB = 250000 MB
so 250000Mb by our standards = 250000 \ 1024 = ~245 GB

So ideally the space advertised is never equal to what space you actually get.

This available space from by experience differs from vendor to vendor . It is very plausible that there is a 11 Gb difference on the advertized 160 GB hdd.

At the same time, you should not have "lost" space the second time around. It is advised that you check disk management in windows to make sure that all space is accounted for. If you dont see any space left out, you can run a ubuntu live cd and run "gParted" and check all drives for lost space and you can try and format any avilable space so that it is "recognised" in windows.

Hope this helps.
 
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SharekhaN said:
Now I dont know if you know this, but there is a difference in how space is calculated by these companies vs what we are commonly are used to.

eg: a 250 GB HDD by our common knowledge is 250 x 1024 MB = 256000 MB
however the HDD and DVD/CD/HDD makers calculate the same space as such below

250 GB = 250 x 1000 MB = 250000 MB
so 250000Mb by our standards = 250000 \ 1024 = ~245 GB

So ideally the space advertised is never equal to what space you actually get.

This available space from by experience differs from vendor to vendor . It is very plausible that there is a 11 Gb difference on the advertized 160 GB hdd.

At the same time, you should not have "lost" space the second time around. It is advised that you check disk management in windows to make sure that all space is accounted for. If you dont see any space left out, you can run a ubuntu live cd and run "gParted" and check all drives for lost space and you can try and format any avilable space so that it is "recognised" in windows.

Hope this helps.
Click to expand...

Ah...
I got 21 GB back ...
Its there.. as u said 21GB is in unallotted space. (checked in disk management).
And i dont what is primary, extended and logical partioning(under basic partioning)
I dont know what i am doing usually when i formatting for installing OS.
Thank u man...
And any idea about the earlier one i.e, balance 12GB
 
its the cache space of the hdd.....
every single hdd has a cache space of 10%(max) of its total sapce...it cannot be used for general storage...
it can vary with 8 or 7 even 6 percent.... depends on the no. of magnetic plates inside the hdd....
 
^^^ It is nothing like that.

the 11-12 GB that you are still missing is not actually missing. It was never there.

Read Sharekhan's post.

If your HDD is 160 GB. You have with you

160 * 1000 * 1000 * 1000 Bytes = ( 160 * 1000 * 1000 * 1000 ) / (1024 * 1024 * 1024 ) = 149 GB

Hope that clears the picture. The cache is never 10% (atleast not this gen tech). Its 16MB / 32 MB etc.
 
doesnt it all depend on how many partitions you make? Each partition take away little... is that correct or am I just misinformed?
 
^^misinformed. Read Deepak's post. that makes it really clear. Mine is still a bit ambiguous on the calculations. :D
 
raju.03kumar said:
its the cache space of the hdd.....
every single hdd has a cache space of 10%(max) of its total sapce...it cannot be used for general storage...
it can vary with 8 or 7 even 6 percent.... depends on the no. of magnetic plates inside the hdd....
Click to expand...

rubbish the cache of the hdd is on a separate flash chip which comes in various sizes.;) upto 32mb
 
You get 149 GB on a 160 gb drive, 298 GB on 320 drive and 465 gb on a 500 gig drive. if anything less then you have bad sectors or unallocated space lying around :P . Simple .
 
hehe its funny when i came to know about this 1st time.

250GB HDD will have actual space of 232Gb

320GB = 298GB

500GB = 465GB

640GB = 598GB

ALWAYS!

I know it sucks!
 
Deepak said:
^^^ It is nothing like that.

the 11-12 GB that you are still missing is not actually missing. It was never there.

Read Sharekhan's post.

If your HDD is 160 GB. You have with you

160 * 1000 * 1000 * 1000 Bytes = ( 160 * 1000 * 1000 * 1000 ) / (1024 * 1024 * 1024 ) = 149 GB

Hope that clears the picture. The cache is never 10% (atleast not this gen tech). Its 16MB / 32 MB etc.
Click to expand...
Yep, its very clear...
Thank u so much.
 
raju.03kumar said:
its the cache space of the hdd.....
every single hdd has a cache space of 10%(max) of its total sapce...it cannot be used for general storage...
it can vary with 8 or 7 even 6 percent.... depends on the no. of magnetic plates inside the hdd....
Click to expand...

Yes... Its in the range of 6-8%
Thank u so much
 
rapt0r said:
You get 149 GB on a 160 gb drive, 298 GB on 320 drive and 465 gb on a 500 gig drive. if anything less then you have bad sectors or unallocated space lying around :P . Simple .
Click to expand...

Yes..
As raj and deepak said and ur calculation everything comes perfect.
Raj - %
Deepak- Maths
Raptor - Exact numbers.

Too good.
Thank u
 
I liked hitachi in the yesteryears because they sold 82GB and 164GB drives :P with formatted capacity of 76 and 153 respectively...while seagate was 2/4Gb lesser :P
 
Useful information :)

SharekhaN said:
Now I dont know if you know this, but there is a difference in how space is calculated by these companies vs what we are commonly are used to.

eg: a 250 GB HDD by our common knowledge is 250 x 1024 MB = 256000 MB
however the HDD and DVD/CD/HDD makers calculate the same space as such below

250 GB = 250 x 1000 MB = 250000 MB
so 250000Mb by our standards = 250000 \ 1024 = ~245 GB

So ideally the space advertised is never equal to what space you actually get.

This available space from by experience differs from vendor to vendor . It is very plausible that there is a 11 Gb difference on the advertized 160 GB hdd.

At the same time, you should not have "lost" space the second time around. It is advised that you check disk management in windows to make sure that all space is accounted for. If you dont see any space left out, you can run a ubuntu live cd and run "gParted" and check all drives for lost space and you can try and format any avilable space so that it is "recognised" in windows.

Hope this helps.
Click to expand...
 
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