How to boot into Centos after installing Windows 7. Urgent

R

rakesh-the gilli

Journeyman
I have a laptop in which i have installed two operating systems CentOS and Windows 7 in dual boot configuration [my friend configured the whole thing]. I am now about to install Windows 7, by formatting [deleting through windows setup] the already existing Windows 7 partition and reinstalling. Will i face any problems like not being able to boot into already existing CentOS after installing Windows 7? Kindly reply as soon as possible as i need to reinstall it today.
 
Desmond

Desmond

Destroy Erase Improve
Staff member
Admin
Yes. Windows will replace the GRUB bootloader and you will lose access to CentOS. However, it is possible to reinstall GRUB using a Live CD after installing Windows.
 
OP
R

rakesh-the gilli

Journeyman
DeSmOnD dAvId said:
Yes. Windows will replace the GRUB bootloader and you will lose access to CentOS. However, it is possible to reinstall GRUB using a Live CD after installing Windows.
Click to expand...

Is it possible to use EasyBCD and make changes, if not can you provide info on how to reinstall GRUB using a Live CD like you have mentioned
 
Desmond

Desmond

Destroy Erase Improve
Staff member
Admin
You could give it a shot. I have never personally used EasyBCD so I cannot comment on how it works.
 
Desmond

Desmond

Destroy Erase Improve
Staff member
Admin
Do you still have the Linux partition or that's formatted too?

I don't know if the CentOS Live CD has the grub-install utility. You could use the Ubuntu Live CD instead it has grub-install and it will work just fine.
 
OP
R

rakesh-the gilli

Journeyman
DeSmOnD dAvId said:
Do you still have the Linux partition or that's formatted too?

I don't know if the CentOS Live CD has the grub-install utility. You could use the Ubuntu Live CD instead it has grub-install and it will work just fine.
Click to expand...

Hi DD. I tried it out with EasyBCD and it worked like a charm. After installing Windows 7, i installed EasyBCD (within Win7), under "Add new entry" setting, selected "Linux/BSD " tab and selected "LegacyGRUB" under "Type", gave it a boot display name [CentOS] under "name" and selected the partition [100 mb in size] that contains Linux boot files i suppose (how do i know? the other linux partition failed to boot when i added its entry) and also checked "automatically find and locate". After adding this entry i restarted and voila i could boot into CentOS. Thanks for your tips too :)
 
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