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Windows 7: Cant format a Primary partition.

28 May 2009   #1

windows 7 HP 64bit
Cant format a Primary partition.

I really should know whats going on but i cant think straight.
I want to format my D: drive to clear some space. Thing is my D: used to be my C: drive under XP when i was dual booting so its showing as an active primary partition and Windows 7 wont let me format it.
Ive tried deleting everything but some things are refusing to go (like the file boot which i assume is to do with dual booting)
Can someone please help.
Im not really as stupid as i seem


My System SpecsSystem Spec

28 May 2009   #2

Win7 build 7100, Win Bus 64bit, Mac OS X

couple of options

1. Go the the web site of manufacturer of your hard drive and get their
free disk utility. Usually they have a program on there to format
your hard drive.

2. Download Gparted boot cd and boot that and format your drive.
My System SpecsSystem Spec
28 May 2009   #3

windows 7 HP 64bit

thanks for the options.
I THINK my problem is the boot manager for my PC is on this drive, even though im booting from my C: drive.
Im going to try and move the Bootmanager to my C: drive and then see if i can format in the usual way.
My System SpecsSystem Spec

28 May 2009   #4

Win 7 (7100 x64); OS X 10.5.6

I've no experience of moving the BOOTMGR and had a problem with this earlier, but you can simply pop in your Windows 7 DVD/USB and after selecting a language, click on Repair instead of Install, and you should get the option to check your boot configuration; Windows 7 should do the rest for you in a matter of seconds.
My System SpecsSystem Spec
28 May 2009   #5

windows 7 HP 64bit

Thanks. ive had to do that twice tonight, each time the repair puts bootmanager back on the D: drive.

Im going to give it a rest for now.
My System SpecsSystem Spec
28 May 2009   #6

Win 7 (7100 x64); OS X 10.5.6

Unplug the D: drive whilst you rebuild the MBR (assuming it is a physical drive and not a partition)
And/or look in Disk Management and make sure the right drive/partition/s is/are set to active.

Also, I reccommend taking a look at the tutorials on this site (if you haven't already) -- can't hurt, can it?
My System SpecsSystem Spec
28 May 2009   #7

Vista Ultimate x64 SP2

There is a free partitioning program that will allow you to boot into it, recreate the partition/delete/format it outside of Windows.

You might also want to run a disk check though. Sometimes when you move the Boot config it must be rebuilt (the second link shows you how to do it)

Partitioning software
Dual Boot using free partitioning software - Vista Forums
My System SpecsSystem Spec
28 May 2009   #8


1 option is to boot from the Windows 7 DVD/Flash and continue up to the 'Drive Selection' part, then just delete the offending partition then create a new 1. You can then exit the installer with a fresh new D: partition.

Just a thought

My System SpecsSystem Spec
28 May 2009   #9

windows 7 HP 64bit

Thanks for the help guys.
My main worry now is the bootmanager. I can restore it but cant seem to move it so the suggestions above could be the answer.
Jeff, ill try your first as it a bit of a pain to get my PC open to disconnect the drive.
Are you saying that if i delete the partition the bootmanager will reflect this and Windows 7 will create a new one on my C: drive?
My System SpecsSystem Spec
28 May 2009   #10


You may need to 'Repair' install afterwards but as D: will be empty it should use C:
My System SpecsSystem Spec

 Cant format a Primary partition.

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