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Windows 7: trouble deleting the 100mb partition on old C:

17 Jul 2012   #11
F5ing

Windows 7 Ultimate x64
 
 

Don't even see a blip. If unallocated I think at most you would see a blip. But Diskpart indicates a defined partition, which would show as very small, but more than just a blip.

And again, if it's all empty, just start over. Get it done right the first time and you won't have to revisit the issue.


My System SpecsSystem Spec
.
17 Jul 2012   #12
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64
 
 

If in doubt boot from a GParted or other live cd eliminating any OS involvement to see just what is on the drive at the present time. As far as the 1mb-6mb differences seen on any drive that's simply the space allowed to change over from Basic to Dynamic or reverse. MS intentionally saw to that when using any MS option to partition a drive.

When in DiskPart the clean command once you select Disk 0 the way the drive is seen should be enough to wipe the old C anyways. The select volume 2 and then using the delete command is the other option to see the same results.

The main problem was using the "List Partition" command rather then using the "List Voume" command which shows the partitions on only one drive. The old C is a 640gb model drive while the list was showing one of the other drives when using the List Partition. Look at the partition sizes to see how the drives are layed out.
My System SpecsSystem Spec
17 Jul 2012   #13
karlsnooks

MS Windows 7 Ultimate SP1 64-bit
 
 

a little arithmetic will help you put partition sizes and their possible visibility in perpspective.
Script:
partition 1 624951296 kb
partition 2 
=       102400 kb
partition 3 
=           1368 kb 
My System SpecsSystem Spec
.

17 Jul 2012   #14
F5ing

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by Night Hawk View Post
The main problem was using the "List Partition" command rather then using the "List Voume" command which shows the partitions on only one drive. The old C is a 640gb model drive while the list was showing one of the other drives when using the List Partition. Look at the partition sizes to see how the drives are layed out.
I may not be fully comprehending what you wrote, but I think the OP did use the appropriate command. "List Partition" will show partitions only for the selected disk. On the other hand, if the OP used "List Voume" he would've gotten a list of all volumes for all connected disks.

I would advise the OP go with your first option: rather than format C: (as he mentions in his OP), use Diskpart to select the disk, enter the "clean" command, and simply start over. In other words, scrub the MBR/PBR clean rather than trying to fix what he's got on a disk that's empty anyway.
My System SpecsSystem Spec
17 Jul 2012   #15
F5ing

Windows 7 Ultimate x64
 
 

Quote   Quote: Originally Posted by karlsnooks View Post
a little arithmetic will help you put partition sizes and their possible visibility in perpspective.
Script:
partition 1 624951296 kb
partition 2 
=       102400 kb
partition 3 
=           1368 kb 
This may help you understand what I was trying to say:

I took a new 2TB drive and using Disk Management created one partition that consumed most of the disk (first screenshot). Using Diskpart I created a new partition out of the remaining space (second screenshot). The appropriate Diskpart screenshot is the third one of course.

The point is that you see nothing (except maybe a small blip) if it's just a small amount of unallocated space. But if you create a partition out of that same small space it clearly becomes visible (although a lot of times you can't read all the details for it). This is with the default logarithmic scaling.


Attached Thumbnails
trouble deleting the 100mb partition on old C:-capture8.png   trouble deleting the 100mb partition on old C:-capture9.png  
Attached Images
trouble deleting the 100mb partition on old C:-capture0.png 
My System SpecsSystem Spec
17 Jul 2012   #16
F5ing

Windows 7 Ultimate x64
 
 

Had to do one more test before I redo this disk. This time I made the initial partition consuming all but 1024 KB. You don't see the 1024 KB in Disk Management if it's unallocated. But when a partition is created with it all of a sudden it becomes visible (logarithmic scaling in both cases):


Attached Thumbnails
trouble deleting the 100mb partition on old C:-capture8.png   trouble deleting the 100mb partition on old C:-capture0.png  
My System SpecsSystem Spec
17 Jul 2012   #17
socrgy9

windows 7 64bit on both
 
 

Quote   Quote: Originally Posted by Night Hawk View Post
At the command prompt once you start the DiskPart tool up and select that drive type in the clean command to see the drive itself wiped. From there simply enter create partition primary followed by format fs ntfs or format fs=nt60. With a live disk you simply click on the two to see each removed for the fast option and then create the new single partition which you then can format in the Disk Management tool afterwards to see it assigned a new drive letter.
thats it! thats the command i couldnt remember. yes, i was done with everything on the drive. the clean command worked perfectly. thank you


Attached Thumbnails
trouble deleting the 100mb partition on old C:-capture.jpg  
My System SpecsSystem Spec
17 Jul 2012   #18
F5ing

Windows 7 Ultimate x64
 
 

Good to see you're back in business!
My System SpecsSystem Spec
17 Jul 2012   #19
Night Hawk

W7 Ultimate x64/W10 Pro x64 dual boot main build-remote pc W10 Pro x64 Insider Preview/W7 Pro x64
 
 

Good for you! socrgy9 You can use the same commands for flash drives as well as internal drives when doing something like making up a USB Install Key for Windows.

As for which command to use unless you use the DiskPart tool regularly I wouldn't generally advise the Clean All command since that could end up wiping more then you want! Since this is where being drive selective you would use the Clean command instead.

If at some point you ever want to split up a drive to see several partitions do yourself a favor and use the gui method when starting with a drive that's "raw" unallocated! You have to calc wiz to enter just the right figure for each new partition when trying it in DiskPart!
My System SpecsSystem Spec
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 trouble deleting the 100mb partition on old C:




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