Ubuntu 12.10 dualboot windows 8

[granul]

Hi!

I want to install Ubuntu 12.10 dual boot with windows 8 on a laptop, I already created a partition, I would to know, before I install, is there anything to do to make sure that grub will install correctly?

thank you

[oldfred]

You need to use the Ubuntu 12.10 64 bit version and be sure to boot it in UEFI mode not BIOS/legacy/AHCI mode.

If you created partition with Windows it will not work for Ubuntu. You have to have Linux partitions for Linux.

Is this a pre-installed Windows 8 with secure boot or your own install?

http://web.dodds.net/~vorlon/wiki/bl..._Ubuntu_12.10/

Some general info from oldfred and links.
http://ubuntuforums.org/showthread.php?t=2086883

https://wiki.archlinux.org/index.php/UEFI
https://help.ubuntu.com/community/UEFI

Secure boot turned off.
Acer V5-571P-6815
http://ubuntuforums.org/showthread.php?t=2081311

Some have reported system works with secure boot on or off both during install or after. Others have had issues as it seems to depend on Vendors UEFI implementation.
Lenovo ThinkCentre M92p only boots Windows or Redhat.
http://www.phoronix.com/scan.php?pag...tem&px=MTIyOTg

[granul]

Thank you
It is an up date from windows 7 to 8, and no problem booting live usb

[oldfred]

So is it BIOS/MBR or UEFI/gpt?

If BIOS then you have to use the available partition as an extended partition and install Ubuntu using logical partitions. Windows requires primary partitions, but Linux works fine from logical partitions.

MBR or gpt partitions:
https://help.ubuntu.com/community/DiskSpace
Basics of partitions:
https://help.ubuntu.com/community/HowtoPartition

[granul]

So is it BIOS/MBR or UEFI/gpt?

If BIOS then you have to use the available partition as an extended partition and install Ubuntu using logical partitions. Windows requires primary partitions, but Linux works fine from logical partitions.

MBR or gpt partitions:
https://help.ubuntu.com/community/DiskSpace
Basics of partitions:
https://help.ubuntu.com/community/HowtoPartition

How do I know if it's UEFI?

[oldfred]

If first partition is efi and you have gpt partitioning, then it is UEFI. Windows only boots from gpt partitioning with UEFI.

If you have MBR(msdos) or gpt this will tell your.

sudo parted /dev/sda unit s print

[granul]

Here is what I have

Number Start End Size Type File system Flags
1 2048s 35653631s 35651584s primary ntfs diag
2 35653632s 35858431s 204800s primary ntfs boot
3 35858432s 1157945343s 1122086912s primary ntfs

[oldfred]

That is MBR(msdos) and you only have 3 primary partitions used. So you can shrink Windows using Windows MMC and then install Ubuntu into the unallocated if you just want auto install and default partitions of / (root) and swap. Or you can manually partition with additional partitions in the extended partition.

A shared NTFS partition is highly recommended as Windows does not like writes into its system and now Windows 8 is always at least partially hibernated.

WARNING for Windows 8 Dual-Booters
http://ubuntuforums.org/showthread.php?t=1953674
It defaults shutdown to a hybrid hibernation/off state for fast boot
But then files may be corrupted similar to Windows 7 Hibernation:
http://ubuntu-with-wubi.blogspot.ca/...rid-sleep.html
http://superuser.com/questions/14472...te-w-dual-boot

[granul]

I installed Ubuntu 12.10, the installation went ok but it boot only to windows 8, no grub

[granul]

I installed Ubuntu 12.10, the installation went ok but it boot only to windows 8, no grub

I finaly fix, I use boot repair on a live session, so now I can dual boot ubuntu and windows 8