Ok, here is the analysis: > > Could not delete variable: No space left on device
The problem is with efibootmgr that cannot add new entries. It turns out that there were incredible many entries in /sys/fs/pstore related to some dumps. I have removed all of them. Also, the strace of efibootmgr gives: open("/sys/firmware/efi/efivars/Boot0002-8be4df61-93ca-11d2-aa0d-00e098032b8c", O_WRONLY|O_CREAT, 0644) = 3 ioctl(3, FS_IOC_GETFLAGS, 0x7ffc3470bba4) = 0 write(3, "\7\0\0\0\1\0\0\0h\0r\0E\0F\0I\0n\0d\0 \0B\0o\0o\0t\0"..., 154) = -1 ENOSPC (No space left on device) so I deleted also some very strange things "...dump..." (or so) in that directory. After a reboot efibootmgr now can add entries it seems and the installation runs smoothly. grub should/must detect whether the installation via efibootmgr failed, otherwise it is completely useless. Thanks Norbert -- PREINING Norbert http://www.preining.info Accelia Inc. + JAIST + TeX Live + Debian Developer GPG: 0x860CDC13 fp: F7D8 A928 26E3 16A1 9FA0 ACF0 6CAC A448 860C DC13