Formatting of windows 7 32 bit - hard disk showing unusable space

[teja]

hie friends,

I had installed ubuntu 10.10 on my lap Dell N5010 model recently, After few days i got blue screen error message then i decided to format my hard disk, with a windows 7 ultimate version which i got through internet. then i thought to format the system completely so while installing i went to advanced disk options and deleted all drives when i did this the drive which has name primary is detected after installation. the drivers which are under category of logical are not getting displayed in my computer and also in partition manager it is showing as unusable space.

please tell how to get out of this problem. and what are precautions to be taken for installing dual operating system because i need ubuntu for my office work.

 

[gregrocker]

How are you activating Ultimate?

GRUB can irreparably corrupt Win7 so it needs to be wiped from the HD first: SSD - HDD Optimize for Windows Reinstallation

Then it's best to install Ubuntu to another HD with WIn7 unplugged, then boot either via BIOS to keep GRUB off the system so it can't corrupt Win7.

If not: Dual-Boot Windows 7 and Ubuntu in Perfect Harmony - windows 7 - Lifehacker