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Windows 7: Unallocated 7.84 mb space materializes (from Outer Space?)

09 Feb 2011   #11
Puddin Man

Win7 Home Prem. 64 OEM
 
 

Quote   Quote: Originally Posted by diehrd View Post
...
CAUSE
Some space at the end of the disk is reserved by Setup in case you later want to upgrade the disk to a dynamic disk. ...
From the orig. post:

>Tonight Partition Wizard (bootable) tells me there is an unallocated 7.84 mb logical partition occupying sectors 0-16064. Neither 7 nor XP reports the existence of this space.

At the beginning of the disk (not the end).

I tried GParted in case Part. Wiz. was inaccurate. Same result.

Breakdown of space on disk device:

Unallocated ----- 7.84 mb
SS1_P1_W7] ------- 78 gb - Win7
SS1_P2_XP] ------- 80 ---- XP
SS1_P3_Data] ----- 80 ---- New Data
Unallocated ----- 204
SS1_WDP2_W2K_PRD - 23 ---- Old Data

All is per my design except the 7.84 mb.

P



My System SpecsSystem Spec
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09 Feb 2011   #12
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello mate.



Sometime when using Partition Wizard to resize an existing partition the slider slips at one end or the other and leaves a small unallocated space and it doesn't get noticed until after the operation is complete, at least that has been my experience.

I've been all through this many times while working with the Partition Wizard program; you can reclaim the space using PW into an existing partition if you choose with no ill effects.

I'm aware you have removed/reclaimed the SysResv partition but there is documentation on the method to use with Partition Wizard; have a look at Option Two of this tutorial at the link below and be sure to post back with any further questions you may have and to keep us informed.


Partition Wizard : Use the Bootable CD
My System SpecsSystem Spec
09 Feb 2011   #13
James Colbert

 
 

It appears to happen with Acronis Disk Director also. Only my system partition seems to have escaped. I've just left them in place...it's never been a problem here:

Unallocated 7.84 mb space materializes (from Outer Space?)-8mb-partitions.jpg


My System SpecsSystem Spec
.

09 Feb 2011   #14
Puddin Man

Win7 Home Prem. 64 OEM
 
 

Quote   Quote: Originally Posted by Bare Foot Kid View Post
Hello mate.

Sometime when using Partition Wizard to resize an existing partition the slider slips at one end or the other and leaves a small unallocated space and it doesn't get noticed until after the operation is complete, at least that has been my experience.
Your experience. Not mine.

Quote   Quote: Originally Posted by Bare Foot Kid View Post
I've been all through this many times while working with the Partition Wizard program; you can reclaim the space using PW into an existing partition if you choose with no ill effects.
That's not the issue.

Quote   Quote: Originally Posted by Bare Foot Kid View Post
I'm aware you have removed/reclaimed the SysResv partition but there is documentation on the method to use with Partition Wizard; have a look at Option Two of this tutorial at the link below and be sure to post back with any further questions you may have and to keep us informed.

Partition Wizard : Use the Bootable CD
I probably followed your Step Two (or something very similar) when I consolidated. My finger didn't slip. There was no unallocated space before my Win7 partition when I finished. This consolidation was done last summer.

No offence, but nothing in your response is relevant to my little problem.

Is it possible that Win7 is doing something unpredictable/illogical that y'all are -not- familiar with?

P
My System SpecsSystem Spec
09 Feb 2011   #15
Puddin Man

Win7 Home Prem. 64 OEM
 
 

Quote   Quote: Originally Posted by James Colbert View Post
It appears to happen with Acronis Disk Director also. Only my system partition seems to have escaped. I've just left them in place...it's never been a problem here:

Attachment 137532
Your screenshot was truncated: I can see only a small part of it.

You have 4 of them? All are exactly 7.84 mb? Preceding what kind of partitions? Etc, etc.

Would like to see the full
screenshot.

Thanks,
P
My System SpecsSystem Spec
10 Feb 2011   #16
unifex

Windows 7 Ultimate (x64)
 
 

Quote from the SSD alignment tutorial:

"If you install Windows7 on a brand new SSD, you need not make any special arrangements because the Windows7 installer will do the alignment for you. For Vista you are lucky because the start sector happens to match a SSD page. For XP the start sector is 126 which would be in the middle of a SSD page, thus a prior alignment is required. "

Is that what you're talking about? I don't have XP anymore, so I can't confirm that this is indeed your 7 MB (why are you at all worried about 7 MB, if you don't mind my asking?)

I have just installed Windows 7 on my new SSD. This is a multi-boot, so sure enough the installer has created a "System Reserved" partition (about 100 MB), while of course the rest of the drive is formatted to a single partition. Supposedly this system reserved partition is needed for the proper functioning of the multi-boot. I am sure I can get rid of it, but I don't think it's worth my time.

So my advice - leave these small chunks alone and move on.
My System SpecsSystem Spec
10 Feb 2011   #17
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Oh you want a manufactured issue, well have at it.
My System SpecsSystem Spec
10 Feb 2011   #18
diehrd

Ultimate 7
 
 

Quote   Quote: Originally Posted by Puddin Man View Post
Quote   Quote: Originally Posted by diehrd View Post
...
CAUSE
Some space at the end of the disk is reserved by Setup in case you later want to upgrade the disk to a dynamic disk. ...
From the orig. post:

>Tonight Partition Wizard (bootable) tells me there is an unallocated 7.84 mb logical partition occupying sectors 0-16064. Neither 7 nor XP reports the existence of this space.

At the beginning of the disk (not the end).

I tried GParted in case Part. Wiz. was inaccurate. Same result.

Breakdown of space on disk device:

Unallocated ----- 7.84 mb
SS1_P1_W7] ------- 78 gb - Win7
SS1_P2_XP] ------- 80 ---- XP
SS1_P3_Data] ----- 80 ---- New Data
Unallocated ----- 204
SS1_WDP2_W2K_PRD - 23 ---- Old Data

All is per my design except the 7.84 mb.

P

YOUR making a huge deal out of something every XP install does , has done , and always will do ..

alphanumeric in post 5 answered your question ,, I also posted an answer that was in line with his. But for some reason your not accepting it or not reading peoples replies.

If you want a answer worded different then those we posted go to windows web site and start searching as well as google and search there , because the answer is is about as hard to find as air

Some disk space is reserved by Setup in case you later want to upgrade the disk to a dynamic disk. Dynamic disk information is saved at the end of the disk. The amount that is reserved is a minimum of one cylinder, or 1MB, whichever is greater. One cylinder can be up to 8MB, depending on drive geometry and translation
My System SpecsSystem Spec
20 Feb 2011   #19
Puddin Man

Win7 Home Prem. 64 OEM
 
 

Blow it off, or rant, or <whatever>, it makes no difference.

No explanation given here fits all the facts.

To repeat:

Breakdown of space on disk device:

Unallocated ----- 7.84 mb
SS1_P1_W7] ------- 78 gb - Windows 7
SS1_P2_XP] ------- 80 ---- XP
SS1_P3_Data] ----- 80 ---- New Data
Unallocated ----- 204
SS1_WDP2_W2K_PRD - 23 ---- Old Data

All is per my design except the 7.84 mb. The config of disk 2 is the same as disk 1.

Running Partition Wizard bootable CD, I delete SS2_P1_W7 78.08 gb, and copy SS1_P1_W7 (exact same size and data) in its place.

The result is reported as 78.08 gb, and the 7.84 is no longer reported.

As if it wasn't really there in the first place.

Y'all don't even blink when your systems do something unpredictable like this. It's very likely to come back and bite ya where it counts some day. :-(

P
My System SpecsSystem Spec
21 Feb 2011   #20
alphanumeric

Windows 10 Education 64 bit
 
 

As far as my systems go, its not unpredictable. I know what it is, what its for, and why its there. Same deal for the 100 mb system reserved partition Windows 7 puts in place. Your unallocated chunk is just at the front of the drive instead of the end of the drive. Likely because you installed windows 7 then windows XP instead of the other way around. Either way its "Unallocated" space, meaning there is nothing in there. Its unpartitioned, unformatted space on the hard drive. IMHO your making a mountain out of a mole hill.
My System SpecsSystem Spec
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 Unallocated 7.84 mb space materializes (from Outer Space?)




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