Windows 7: How to Delete all Partitions during Win7 Installation?

How to delete all HDD Partitions during the installation of Windows 7? I want to wipe out all of the existing partitions and make it 0 and then create new volumes with different sizes. I cant delete primary partition during installation. Or is there any other software i can use to delete all partitions of HDD and then start over again freshly?

Hello boogieboy.



I would suggest, after you have copied out or made back-ups of the data you need to save to external media, use Step One of this tutorial at the link below to do a wipe (secure erase) to the entire Hard Disk Drive, running this then using the outline in Step Two #2 to create and format a single 100GB partition using diskpart will get you the best possible space to clean install Windows 7 to.


SSD / HDD : Optimize for Windows Reinstallation

DISKPART : At PC Startup



Be sure to post back with any further questions you may have and to keep us informed.

thanks for the help Bare Foot Kid

You're welcome mate, did that sort the issue for you?

im having few questions about deleting all partitions.
if i use a tool called " EaseUS Partition Master " to wipe all partitions and select ok. then what will happen
will my files will be lost?
will my system not boot?
will all the files be moved to a single partition?
please clear my confusion!!!

If you delete all partitions:

All data will be lost.

The system will not boot.

Your files will not be moved anywhere. They will be deleted and gone.

ohk suppose i deleted all the partitions using the tool i above mentioned.
after that i insert my windows disk ...in the installation window i will be shown only one partion ..i will install on that..and my system is working again! later on if i want to create any partitions, i can!

am i right?
correct me where im wrong pls!!

If you delete all partitions, you can reinstall with your Windows disk and create one or more partitions---you are right.

But you don't need to use EaseUS Partition Master to delete partitions. You can delete partitions during the Windows installation using the Windows disk.

You need to back up your data.

You can create additional partitions during the installation or after the installation is complete using Windows Disk Management.

oh great then il just backup my important data..insert windows disk and boot and then delete all partitions from there?
thats easy!! thanks alot bro!!!!!!

That's about right. During the installation, you will come to a screen that asks about partitions and where you want to install Windows. You can delete partitions at that point. Look for "advanced drive options" or something like that.

If you delete all partitions, your entire drive will be "unallocated space" and Windows will then make a partition of that unallocated space, format it, and install Windows.