BootPartion after setup crashes Win8-startup

What guide did you follow in order to install Ubuntu 13.10 in a PC with Windows 8.1 preinstalled ?

Secure boot was enabled during the installation, wasn't ? I bet it was :-)

Now, my suggestion is to repair the Windows 8 installation. You will need a repair CD/DVD or boot from a recovery environment.

Then boot from Windows (it will boot automatically in Windows) and remove Ubuntu via Windows disk management.

Then re-install Ubuntu. This time be sure that the Secure Boot is OFF and Ubuntu is booted in UEFI mode.

Read this before start the installation
https://help.ubuntu.com/community/UEFI

Regards
 NikTh

Thx for the response. You known what I love on support guys always? ;) they give you the idea one is a complete fool by not reading the details of the sideletters annex paragraph 145, issue 8, where it is written in bold letters....

Yeah, you are right, but I didn't check the details up till now. I wonder why there isn't a wizard guiding through the first steps, e.g. migrating Win8, type of BIOS, secure settings set or not, .... And if there is anything which might not work, then smash into the users face the sideletters annex paragraph 145, issue 8, bold letters. They way you do it is like luring people in a trap. Especially since I didn't get any warning nor error messages prior to installation.

And don't forget to smile with a big grin ;D)

Skip the fun part and face the current status:

I have one partion with Win8.1, one partion as data partion for ntfs, one as secret (?), one for Ubuntu and one for swap. To what I understand is, that I should disable Secure boot. There is in the BIOS another option, called Security Chip ==> This option I can leave enabled?

I don't get your additional suggestions, cause I have no clear idea how to procede in detail with the installation. If I follow your advice, then I recover the Win8.1 installation, remove the partition assigned specifcally for Ubuntu (as well the swap) partition. But this part I don't understand, 'Why? Cause this shouldn't have an impact, or not?' Or do you mean, I should remove it from the boot-menu and can leave the partition I have currently assigned 2 Ubuntu intact?

And last but not least: After I have installed Ubuntu properly (SecureBoot OFF), can I turn it on afterwards? AND according to the link you have provided: The secure boot option should work! Otherwise a Bug should be filled out (which would be a longterm approach). The quick one would be to turn it off?

First of all:

In case you don't know, I'm not a canonical employee , neither a support guy that gets payed. In Launchpad answers tracker(here), users that participating are users like you (and me). Users that they want to help from hobby or the need to share their knowledges or to spread Ubuntu.. etc.

As for the documentation, it is difficult to write a universal documentation about UEFI - Secure boot and Windows, because this is not always a standard. The options and settings are changing and this depends on the hardware manufacturer and how the UEFI - Secure boot is implemented in the PC.

If Ubuntu is installed with secure boot on, then probably the grub bootloader is damaged right now. It is difficult (and I don't know the way) to repair it manually. Boot-repair (you already tried that) is a good automatic tool, but as we saw it failed.

Yes, it says "should work" but that doesn't mean that it will. Secure boot is not fully supported from any Linux operating system right know. Sometimes work, sometimes not.

After all that was only my suggestion. You can wait for a more technical educated guy-or-girl to guide you through another process that might be spared you from all this fuss (of re-installation).

Regards
 NikTh

thx for clarfiying your position. I wasn't aware of that.

Also thx for further words and clarfications reg. SecureBoot. I think I'll take the pragmatical way and reinstall everything. Its more or less a fresh system anyway. Nevertheless I am curious about view things. I feel stupid to repeat them, but in the very ending I'm not clear about it.

1) After I have installed Ubuntu without SecureBoot, can I reenable it afterwards? I would guess the GRUB is already written and nothing more needs to be done later on. Resp. when I have reenabled it, might it cause in future problems with upgrades?

2) To my understanding I would like to keep the partition settings as mentioned before. Do you see any problems with that approach? Or any better ideas reg. partitioning?

1) I'm not aware of such problems, but a kernel update might cause some problems when secure boot is ON. Either way you can disable it in order to install Ubuntu, then enable it again and if you see any problems disable it again from UEFI configuration page.

2) The partitioning you selected seems ok to me. One partition to host /root and /home and one partition for /swap memory. Two partitions is the default scheme in automatic installer also.

Regards
 NikTh

You are experiencing bug #1091464. You can click on the bugs tab, type in the number in the search bar, and on the bug page, add yourself to the "Does this affect me?" list.
  Quick workaround, just turn off secure boot and see if things work.
Installing Grub without secure boot installs different programs (the unsigned ones), so not recommended except as a last resort when nothing else works. Then you can have boot-repair try to put in the other signed versions.
  Another workaround, leaving secure boot on (which may be needed to get windows to boot), is to bring up the efi boot menu to select the devices/oses -- type a function key early in the boot sequence, varies by machine, mine is F12, yours? You may be able to select windows, or maybe have to select the hard disk, then select windows.

@Ubfan: Thx for the hint with the additonal bug. I tested your suggestion but F12 with the selection does not work (=same problems as with GRUB).

Overall it seems that scecure boot does NOT work with 13.10. At least not for Win8.1, Fujtsu T902. So I can either leave it enabled, and boot Ubuntu, or disable and boot Win8.1. The problem I see is that Win8.1 complains about the missing SecureBoot option. Which I would finally would like to be turned on.

So my final question for this issue is:

How to preceed to fix Win8.1 to work again with SecureBoot? Recovery disk? Some kind of tool which might fix this? Some kind of bootmenu-editor?

The reason for asking is to have a clear view what are my options....