Installer crashes on Dell Inspiron 17-5000

[Michel Rooy]

Windows 8.1 is pre-installed.
I disabled secure boot, windows fast start and legacy boot option.
I prepared 3 partitions using the Windows disk tool (Gparted crashes or freezes depending of the version) :
- sda6 for grub (unusual for me, not used on my previous computers, but required according some forums)
- sda7 for /
- sda8 for /home
Is something wrong in what I did ?

Thank you

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubiquity 2.20.0
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CasperVersion: 1.345
Date: Fri Feb 13 09:59:50 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash --
LiveMediaBuild: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
ProcEnviron:
 LANGUAGE=fr_FR.UTF-8
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Phillip Susi (psusi)]

Your EFI System Partition is corrupt; you will need to repair it with chkdsk in windows, or dosfsck in linux.

[Michel Rooy (michel-rooy)]

Thanks a lot for your help.
You're right, I found that the EFI partition is corrupt.
I can't access this partition with the Windows disk tool. I tried to use
a SystemRescueCD : I see quite strange file names in the ubuntu
directory with the file manager. I tried to repair the partition with
dosfsck, and it seemed to work at the beginning. But it stopped with a
segmentation fault message, and, using the file manager again, nothing
seems to have been changed.
Do you have any idea for fixing the problem, and do you have any idea on
how such a problem can occur on a brand new laptop (bought on january
29th) ?
Many thanks again.

Michel Rooy

Le 13/02/2015 14:56, Phillip Susi a écrit :
> Your EFI System Partition is corrupt; you will need to repair it with
> chkdsk in windows, or dosfsck in linux.
>
>
> ** Changed in: grub-installer (Ubuntu)
> Status: New => Invalid
>

[Phillip Susi (psusi)]

Nope; no idea. You should be able to use the Ubuntu cd to dosfsck it, though others who have run into this usually have had to run it a few times to get everything fixed.