Dual Boot Problem

[Xanity]

Ok, so I was dual booting Sabayon and Windows XP, but then I had to reinstall Windows XP and now my computer won't dual boot anymore, it will only boot up Windows. It won't give me an option to boot into Sabayon anymore. Can someone please help me?

[micia]

Windows has overwritten your bootloader, you have to recover it using
Supergrubdisk or the Sabayon LiveDVD.
http://www.supergrubdisk.org/

[wolfden]

lol, I told u that in the IRC help chat

get the cd, use it and keep it in your must have cds pile

[Xanity]

Windows has overwritten your bootloader, you have to recover it using
Supergrubdisk or the Sabayon LiveDVD.
http://www.supergrubdisk.org/

How do I recover it with the Sabayon LiveDVD???

[micia]

You boot in the liveDVD, find out which hard disk has Sabayon and Windows installed,
and invoke grub-install to reinstall grub in that device.

(note, use these commands as root)

1. boot the LiveDVD

2. find out the device, you can use GParted, fdisk or whatever, you could also
already know it... For example using fdisk:

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fdisk -l


You will get all your partitions and disks, let's assume you have Windows on /dev/sda2 and
Sabayon on /dev/sda1.
These are partitions of the /dev/sda disk. So the device in which they are installed is /dev/sda.

3. chroot in your system.
You have to chroot in your system, in this example /dev/sda1 is where Sabayon is located, so:
*mount it:

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mkdir sabayon_partition
mount /dev/sda1 ./sabayon_partition


*prepare the environment in order to use that partition:

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mount --bind /dev/ ./sabayon_partition/dev
mount -t proc none ./sabayon_partition/proc


*execute the chroot:

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chroot ./sabayon_partition /bin/bash


Now you are inside your system.

4. use grub-install in the chroot-ed environment:
simply use grub-install and pass to it the device you found out:

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grub-install /dev/sda


5. exit and unmount the partition:
[EDIT] I fixed this command...

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exit
umount ./sabayon_partition/proc
umount ./sabayon_partition/dev
umount ./sabayon_partition


just as a note: If wolfden already helped you out you should follow his instructions, we are
not paid to offer support and duplicating our work is no fun...
At least provide informations of what you tried and which steps confused you.

[pepe999]

Windows has overwritten your bootloader, you have to recover it using
Supergrubdisk or the Sabayon LiveDVD.
http://www.supergrubdisk.org/

How do I recover it with the Sabayon LiveDVD???

You can use any linux live dvd/cd, not only Sabayon LiveDVD...
1. Boot up the live cd/dvd as root(username and password are root)
2. Open terminal and type

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grub

3.

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find /boot/grub/stage1

4.

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root (hd0,1)

if (hd0,1) is the result of step 3
5.

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setup (hd0)

should be ended by succeeded or done
6. quit
7. reboot(can do it in terminal)