Lost space on HDD.

I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

On 03/03/2019 22.15, Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

1000GB or 1000GiB? It is not the same.

My guess is it is 931 GiB which is 1000GB.


Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

Or possibly 391 GiB.

Even so, a lot is missing.


But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter



--
Cheers, Carlos.

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

It showed 932GB.

On 3/3/2019 1:15 PM, Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

as administrator

dir volume moniker /A
dir volume moniker /A /S
chkdsk volume moniker /F

On 03/03/2019 8:04 PM, Mike wrote:
On 3/3/2019 1:15 PM, Peter Jason wrote:
I have a 1000GBÂ* HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

as administrator

dir volume moniker /A
dir volume moniker /A /S
chkdsk volume moniker /F

932 sounds right, were the 2 270 GB images compressed?
Have you checked with any other partition manager such as Minitool
partition manager or other to see if they give you more info or results.

Rene

On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?

On 03/03/2019 8:29 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?


You have only lost *182 MB* , Not GIGABYTES, So all looks fine to me.

Rene

Rene Lamontagne wrote:
On 03/03/2019 8:29 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?


You have only lost *182 MB* , Not GIGABYTES, So all looks fine to me.

Rene


That's probably something like the $MFT or other metadata for
the partition that was just created. There's always some
overhead on a new partition, as well as sizes of things
worked out in mixed units to **** people off (GB vs GiB).
It's the GiB that gives you the 931GB. But that tiny bit
of wasted space is the metadata of a newly formatted partition.

*******

It is possible for the "envelope" of a partition to be a different
size than the "clusters" contained in it. There is normally a very
small (8MB) section of lost space at the end. In this example,
Disk Management screwed up, encountered a problem during a
resize, and left roughly half of a big partition, unused.
The "wasted space" is outside the set of clusters defined
for the partition, so it cannot be accessed.

-- partition size seen in disk management --

+--------------------------------------------+ A 500GB partition taking
| +--------------------+ | up 1000GB of space. You can
| | | -- wasted space --| have shrink or expand operations
| +--------------------+ | that "fail" just as the details
+--------------------------------------------+ of the envelope are adjusted,
leaving unaccounted-for space.

Linux has the tools to do that. In Linux GPARTED,
you can watch as partition resizes are done in two separate
steps. Linux makes it obvious, how the two layers work.
Windows hides this. The only time you will become
aware of the two layers in Windows, is when it
breaks as in the example :-) One poster here, has
already run into one of these cases... It
is possible for a 2 liter pail, to only hold
1 liter of milk.

Paul

Peter Jason wrote:
On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?

What does disk management show?
diskmgmt.msc

On Sun, 3 Mar 2019 20:43:06 -0600, Rene Lamontagne
wrote:

On 03/03/2019 8:29 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?


You have only lost *182 MB* , Not GIGABYTES, So all looks fine to me.

Rene

.....uh, your 're right.

Anyway formatting the empty drive fixed it, and I
got back all that space (now 446GB).
(I did a few shrink/extend actions to jolt it
along)
I transferred back all the original files

On Sun, 03 Mar 2019 22:46:36 -0500, Paul
wrote:

Rene Lamontagne wrote:
On 03/03/2019 8:29 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 18:44:39 -0600, Rene Lamontagne
wrote:

On 03/03/2019 6:37 PM, Peter Jason wrote:
On Sun, 3 Mar 2019 16:46:00 -0600, Paul in Houston
TX wrote:

Peter Jason wrote:
I have a 1000GB HDD for image backups,
containing...

Image 1 = 270GB
Image 2 = 270GB

270 + 270 = 540GB

This should leave 1000 - 540 = 460GB space unused.

But File Explorer indicates only 186GB free.

Where is the remaining space?
Peter

Unallocated?
What does disk mgr show?

All as usual, that is just one primary partition.

But I am now transferring its contents to another
disk, and then I'll reformat it & transfer the
contents back.
I'll report back.


All as usual doesn't tell us a heck of a lot! If you really want help
you will have to be a little more specific.
How many GB does that partition show?

Rene

After a (slow) format the HDD kept its drive
letter? And the properties capacity info makes no
sense!
https://postimg.cc/kV3G2gHL

Where & what is this lost 191GB?


You have only lost *182 MB* , Not GIGABYTES, So all looks fine to me.

Rene


That's probably something like the $MFT or other metadata for
the partition that was just created. There's always some
overhead on a new partition, as well as sizes of things
worked out in mixed units to **** people off (GB vs GiB).
It's the GiB that gives you the 931GB. But that tiny bit
of wasted space is the metadata of a newly formatted partition.

*******

It is possible for the "envelope" of a partition to be a different
size than the "clusters" contained in it. There is normally a very
small (8MB) section of lost space at the end. In this example,
Disk Management screwed up, encountered a problem during a
resize, and left roughly half of a big partition, unused.
The "wasted space" is outside the set of clusters defined
for the partition, so it cannot be accessed.

-- partition size seen in disk management --

+--------------------------------------------+ A 500GB partition taking
| +--------------------+ | up 1000GB of space. You can
| | | -- wasted space --| have shrink or expand operations
| +--------------------+ | that "fail" just as the details
+--------------------------------------------+ of the envelope are adjusted,
leaving unaccounted-for space.

Linux has the tools to do that. In Linux GPARTED,
you can watch as partition resizes are done in two separate
steps. Linux makes it obvious, how the two layers work.
Windows hides this. The only time you will become
aware of the two layers in Windows, is when it
breaks as in the example :-) One poster here, has
already run into one of these cases... It
is possible for a 2 liter pail, to only hold
1 liter of milk.

Paul


I remember this problem occurred once before.

On Mon, 4 Mar 2019 09:48:36 -0500, Wolf K
wrote:


NB that 191,291,392 bytes = 182MB. That's because the first number is
the actual number of bytes in decimal notation, but 1MB is a binary
number, equivalent to 1,048,576 bytes or 1,024 kilobytes. 1KB =1,024
bytes. Since 1,024 is "about" 1,000 bytes, it's called kilobyte. This
fudging has caused a lot of grief, but it's irreversible. [1].



Yes. No argument with anything there, but I'll just add my standard
post on the subject:

All hard drive manufacturers define 1TB as 1,000,000,000,000 bytes,
while the rest of the computer world, including Windows, defines it as
2 to the 40th power (1,099,511,637,776) bytes. So a 5 trillion byte
drive is actually around 4.5TB.

Some people point out that the official international standard defines
the "T" of TB as one trillion, not 1,099,511,637,776. Correct though
they are, using the binary value of TB is so well established in the
computer world that I consider using the decimal value of a trillion
to be deceptive marketing on the part of the hard drive manufacturer.