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Old 02-23-2010, 06:18 AM
Jatin K
 
Default where is my remaining space ????

Dear list

I've installed 320GB hdd but Disk Usage Analyzer shows the following

Total filesystem capacity 288.6GB ( used 53.1 GB available 235.4 GB )

320.00 GB

- (minus) 288.60 GB
---------------------------------------
31.40 GB ( what about this missing space ...
where is it ? )


how do I utilize missing space of 31.40 GB ...where it has gone ??????


This is the output of fdisk -l
---------------------------------------------------------
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 14593 117013441 8e Linux LVM
/dev/sda3 14594 38913 195350400 83 Linux

Disk /dev/dm-0: 114.5 GB, 114533859328 bytes
255 heads, 63 sectors/track, 13924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x2917754c

Device Boot Start End Blocks Id System
/dev/dm-0p1 1 13924 111844498+ 83 Linux

Disk /dev/dm-1: 5284 MB, 5284823040 bytes
255 heads, 63 sectors/track, 642 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x42cd0139

Device Boot Start End Blocks Id System
/dev/dm-1p1 1 642 5156833+ 83 Linux


------------------------------------------------------------------------------------------------------------------

Can anyone explain me ...whats going wrong with me ???

Regards

--
v
/(_)
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Old 02-23-2010, 06:39 AM
Frank Cox
 
Default where is my remaining space ????

On Tue, 2010-02-23 at 12:48 +0530, Jatin K wrote:
> what about this missing space ...
> where is it ? )

The space you're looking for doesn't exist, for two reasons:

First, most (all?) hard drive manufacturers define 1gb as 1000mb. In
reality, 1gb is 1024mb. Therefore, a hard drive that is sold as a 320gb
hard drive has only 312.5gb of actual space. Calling it a 320gb hard
drive is a marketing ploy to make it sound larger.

You also lose some of the hard drive capacity to what you might call
overhead; tracking and format information that allows your computer to
store and find stuff on the hard drive.
--
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Old 02-23-2010, 06:44 AM
Joachim Backes
 
Default where is my remaining space ????

On 02/23/2010 08:18 AM, Jatin K wrote:

Dear list

I've installed 320GB hdd but Disk Usage Analyzer shows the following

Total filesystem capacity 288.6GB ( used 53.1 GB available 235.4 GB )

320.00 GB

- (minus) 288.60 GB
---------------------------------------
31.40 GB ( what about this missing space ...
where is it ? )


how do I utilize missing space of 31.40 GB ...where it has gone ??????


This is the output of fdisk -l
---------------------------------------------------------
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 14593 117013441 8e Linux LVM
/dev/sda3 14594 38913 195350400 83 Linux

Disk /dev/dm-0: 114.5 GB, 114533859328 bytes
255 heads, 63 sectors/track, 13924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x2917754c

Device Boot Start End Blocks Id System
/dev/dm-0p1 1 13924 111844498+ 83 Linux

Disk /dev/dm-1: 5284 MB, 5284823040 bytes
255 heads, 63 sectors/track, 642 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x42cd0139

Device Boot Start End Blocks Id System
/dev/dm-1p1 1 642 5156833+ 83 Linux


------------------------------------------------------------------------------------------------------------------

Can anyone explain me ...whats going wrong with me ???

Regards



When making a fs, there is a parameter "-m" describing
reserved-blocks-percentage with a default value of 5%. Can that be your
problem?


Regards

--
Joachim Backes <joachim.backes@rhrk.uni-kl.de>

http://www.rhrk.uni-kl.de/~backes

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Old 02-23-2010, 06:46 AM
"Michael D. Setzer II"
 
Default where is my remaining space ????

> Dear list
>
> I've installed 320GB hdd but Disk Usage Analyzer shows the following
>
> Total filesystem capacity 288.6GB ( used 53.1 GB available 235.4 GB )
>
> 320.00 GB
>
> - (minus) 288.60 GB
> ---------------------------------------
> 31.40 GB ( what about this missing space ...
> where is it ? )
>
>
> how do I utilize missing space of 31.40 GB ...where it has gone ??????
>
>
> This is the output of fdisk -l
> ---------------------------------------------------------
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 26 204800 83 Linux
> Partition 1 does not end on cylinder boundary.
> /dev/sda2 26 14593 117013441 8e Linux LVM
> /dev/sda3 14594 38913 195350400 83 Linux
>

First off, do and fdisk -l /dev/sda
The physical info on /dev/sda wasn't included.

Takes the Heads * Sectors * Cylinders / 2 to get true size.
Many manufactures use GB to be 1,000,000,000 bytes instead of a true GB.
The machine I am using at the moment gives these numbers.
255 Heads * 63 Sectors * 19452 cylinders = 312496380 total sectors
Divide by 2 to get 1K units, and it is 156248190KB
Divide by 1024 to get 1M units, and it is 152586.12MB
Divide by 1024 to get 1G units, and it is 149.01GB.
But the Drive is called a 160GB disk?
Disk /dev/sda: 160.0 GB, 160000000000 bytes

Thus there is a difference of about 11GB of size.

If you did a disk image from a drive with different settings, you might
need to use a partitioning tool to reset the options. I've used Parted
Magic in the past.







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Old 02-23-2010, 06:53 AM
Jatin K
 
Default where is my remaining space ????

On 02/23/2010 01:16 PM, Michael D. Setzer II wrote:
>> Dear list
>>
>> I've installed 320GB hdd but Disk Usage Analyzer shows the following
>>
>> Total filesystem capacity 288.6GB ( used 53.1 GB available 235.4 GB )
>>
>> 320.00 GB
>>
>> - (minus) 288.60 GB
>> ---------------------------------------
>> 31.40 GB ( what about this missing space ...
>> where is it ? )
>>
>>
>> how do I utilize missing space of 31.40 GB ...where it has gone ??????
>>
>>
>> This is the output of fdisk -l
>> ---------------------------------------------------------
>> Device Boot Start End Blocks Id System
>> /dev/sda1 * 1 26 204800 83 Linux
>> Partition 1 does not end on cylinder boundary.
>> /dev/sda2 26 14593 117013441 8e Linux LVM
>> /dev/sda3 14594 38913 195350400 83 Linux
>>
>>
> First off, do and fdisk -l /dev/sda
> The physical info on /dev/sda wasn't included.
>
> Takes the Heads * Sectors * Cylinders / 2 to get true size.
> Many manufactures use GB to be 1,000,000,000 bytes instead of a true GB.
> The machine I am using at the moment gives these numbers.
> 255 Heads * 63 Sectors * 19452 cylinders = 312496380 total sectors
> Divide by 2 to get 1K units, and it is 156248190KB
> Divide by 1024 to get 1M units, and it is 152586.12MB
> Divide by 1024 to get 1G units, and it is 149.01GB.
> But the Drive is called a 160GB disk?
> Disk /dev/sda: 160.0 GB, 160000000000 bytes
>
> Thus there is a difference of about 11GB of size.
>
> If you did a disk image from a drive with different settings, you might
> need to use a partitioning tool to reset the options. I've used Parted
> Magic in the past.
>
>
>
>
>
>
>
>
I've used clonezilla to ...for disk to disk dump ( 160 gb to 320gb )

--
v
/(_)
^ ^ Jatin Khatri
Registerd Linux user No #501175
www.counter.li.org
No M$

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Old 02-23-2010, 06:56 AM
Jatin K
 
Default where is my remaining space ????

On 02/23/2010 01:09 PM, Frank Cox wrote:
> On Tue, 2010-02-23 at 12:48 +0530, Jatin K wrote:
>
>> what about this missing space ...
>> where is it ? )
>>
> The space you're looking for doesn't exist, for two reasons:
>
> First, most (all?) hard drive manufacturers define 1gb as 1000mb. In
> reality, 1gb is 1024mb. Therefore, a hard drive that is sold as a 320gb
> hard drive has only 312.5gb of actual space. Calling it a 320gb hard
> drive is a marketing ploy to make it sound larger.
>

ohh,,, got it

> You also lose some of the hard drive capacity to what you might call
> overhead; tracking and format information that allows your computer to
> store and find stuff on the hard drive.
>

does is required 31 gb of space to .... for all this things ????



--
v
/(_)
^ ^ Jatin Khatri
Registerd Linux user No #501175
www.counter.li.org
No M$

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Old 02-23-2010, 06:57 AM
Jatin K
 
Default where is my remaining space ????

On 02/23/2010 01:14 PM, Joachim Backes wrote:
> On 02/23/2010 08:18 AM, Jatin K wrote:
>> Dear list
>>
>> I've installed 320GB hdd but Disk Usage Analyzer shows the following
>>
>> Total filesystem capacity 288.6GB ( used 53.1 GB available 235.4 GB )
>>
>> 320.00 GB
>>
>> - (minus) 288.60 GB
>> ---------------------------------------
>> 31.40 GB ( what about this missing space ...
>> where is it ? )
>>
>>
>> how do I utilize missing space of 31.40 GB ...where it has gone ??????
>>
>>
>> This is the output of fdisk -l
>> ---------------------------------------------------------
>> Device Boot Start End Blocks Id System
>> /dev/sda1 * 1 26 204800 83 Linux
>> Partition 1 does not end on cylinder boundary.
>> /dev/sda2 26 14593 117013441 8e Linux LVM
>> /dev/sda3 14594 38913 195350400 83 Linux
>>
>> Disk /dev/dm-0: 114.5 GB, 114533859328 bytes
>> 255 heads, 63 sectors/track, 13924 cylinders
>> Units = cylinders of 16065 * 512 = 8225280 bytes
>> Disk identifier: 0x2917754c
>>
>> Device Boot Start End Blocks Id System
>> /dev/dm-0p1 1 13924 111844498+ 83 Linux
>>
>> Disk /dev/dm-1: 5284 MB, 5284823040 bytes
>> 255 heads, 63 sectors/track, 642 cylinders
>> Units = cylinders of 16065 * 512 = 8225280 bytes
>> Disk identifier: 0x42cd0139
>>
>> Device Boot Start End Blocks Id System
>> /dev/dm-1p1 1 642 5156833+ 83 Linux
>>
>>
>> ------------------------------------------------------------------------------------------------------------------
>>
>>
>> Can anyone explain me ...whats going wrong with me ???
>>
>> Regards
>>
>
> When making a fs, there is a parameter "-m" describing
> reserved-blocks-percentage with a default value of 5%. Can that be
> your problem?
>
> Regards
>
I've not used fdisk ... I've cloned my old hdd to newone ( from 160gb
to 320gb ) using clonezilla bootable ISO

--
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/(_)
^ ^ Jatin Khatri
Registerd Linux user No #501175
www.counter.li.org
No M$

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Old 02-23-2010, 07:01 AM
Jonathan Dieter
 
Default where is my remaining space ????

On Tue, 2010-02-23 at 01:39 -0600, Frank Cox wrote:
> On Tue, 2010-02-23 at 12:48 +0530, Jatin K wrote:
> > what about this missing space ...
> > where is it ? )
>
> The space you're looking for doesn't exist, for two reasons:
>
> First, most (all?) hard drive manufacturers define 1gb as 1000mb. In
> reality, 1gb is 1024mb. Therefore, a hard drive that is sold as a 320gb
> hard drive has only 312.5gb of actual space. Calling it a 320gb hard
> drive is a marketing ploy to make it sound larger.

Just wanted to clarify that most manufacturers define 1GB as
1,000,000,000 bytes, where it's actually 1,073,741,824 bytes
(1024*1024*1024). That means that the actual space on a 320GB drive is
roughly 298GB.

> You also lose some of the hard drive capacity to what you might call
> overhead; tracking and format information that allows your computer to
> store and find stuff on the hard drive.

The other 10GB can probably be traced to this.

Jonathan
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Old 02-23-2010, 09:38 AM
Alan Cox
 
Default where is my remaining space ????

> First, most (all?) hard drive manufacturers define 1gb as 1000mb. In
> reality, 1gb is 1024mb. Therefore, a hard drive that is sold as a 320gb

In fact they are giving you more than you asked for. Giga is a prefix for
10^x series. So really they should be giving you 1000000000 bytes

> hard drive has only 312.5gb of actual space. Calling it a 320gb hard
> drive is a marketing ploy to make it sound larger.

Its correct (slightly over) but it does confuse because computing people
used the wrong units for so long and often still do.

> You also lose some of the hard drive capacity to what you might call
> overhead; tracking and format information that allows your computer to
> store and find stuff on the hard drive.

Plus about 5% is usually reserved space for the superuser. That makes
some sense on the root partition and systems parts of the disk - although
today 5% is perhaps excessive. For other partitions its less sensible.
You can tune the reserved size with tune2fs -m

Alan
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Old 02-23-2010, 12:41 PM
Aaron Konstam
 
Default where is my remaining space ????

On Tue, 2010-02-23 at 13:26 +0530, Jatin K wrote:
> On 02/23/2010 01:09 PM, Frank Cox wrote:
> > On Tue, 2010-02-23 at 12:48 +0530, Jatin K wrote:
> >
> >> what about this missing space ...
> >> where is it ? )
> >>
> > The space you're looking for doesn't exist, for two reasons:
> >
> > First, most (all?) hard drive manufacturers define 1gb as 1000mb. In
> > reality, 1gb is 1024mb. Therefore, a hard drive that is sold as a 320gb
> > hard drive has only 312.5gb of actual space. Calling it a 320gb hard
> > drive is a marketing ploy to make it sound larger.
> >
>
> ohh,,, got it
>
> > You also lose some of the hard drive capacity to what you might call
> > overhead; tracking and format information that allows your computer to
> > store and find stuff on the hard drive.
> >
>
> does is required 31 gb of space to .... for all this things ????
>
Itt has long been a rule on Unix and Linux to set awsodwew 5% -10% oof a
disk for root acounting tasks. The space is only available to root.
>


--
================================================== =====================
My father was a God-fearing man, but he never missed a copy of the New
York Times, either. -- E.B. White
================================================== =====================
Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam@sbcglobal.net

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