Remove old linux from bootable OS

[rokytnji]

I and other members would reply.

But not enough details really to give one.

Your post assumes we are looking over your shoulder and know what you are talking about.
I realize language barriers may be a issue in this thread.

But if you can be more descriptive. Give lots more detail. Computer specs. Which distro installed grub to mbr. What distros are installed.

Maybe we can help you then. Here are some commands to get you started.

Code:

sudo parted -l

Code:

sudo blkid

Code:

sudo fdisk -l

a screenshot of gparted using http://imgur.com/ to post the screenshot on the forum'

You need to tell us the /dev/sdx  partition of the bad linux install. I hope I am clear on this.
Good luck.