12.04.2 with 3.5.xx Confuses Grub & Me 2. How About U
Edit 2: The double entry problem has been corrected by re-installing. I will post details ASOP.
Before installing 12.04.2 I was aware that it would include the 3.5.0 kernal in place of the 3.2.0 version that came with 188.8.131.52, and that the Precise versions of linux-headers and images were already listed in Synaptic, as "12.04.2" was returned by '/etc/lsb-release'; even before the upgrade.
As the upgrade was not available from Update Manager, I created a LiveDVD and installed to a formatted root partition, sd8.
What I did not expect was that it would be possible to boot into both.
My Grub Menu now has two pairs of entries labelled:
17 menuentry 'Ubuntu 12.04.2 LTS (12.04)
18 submenu 'Advanced options for Ubuntu 12.04.2 LTS (12.04)
19 menuentry 'Ubuntu, with Linux 3.2.0-37-generic-pae (on /dev/sda5)
20 menuentry 'Ubuntu, with Linux 3.2.0-37-generic-pae (recovery mode) (on /dev/sda5)
21 menuentry 'Ubuntu, with Linux 3.2.0-37-generic (on /dev/sda5)
22 menuentry 'Ubuntu, with Linux 3.2.0-37-generic (recovery mode) (on /dev/sda5)
And another pair labelled:
23 menuentry 'Ubuntu 12.04.2 LTS (12.04)
24 submenu 'Advanced options for Ubuntu 12.04.2 LTS (12.04)
25 menuentry 'Ubuntu,12.04.2 with 3.5.0-23-generic sda8 (on /dev/sda8)
26 menuentry 'Ubuntu,12.04.2 with 3.5.0-23-generic sda8 (recovery mode) (on /dev/sda8)
To make it even more confusing, whilst sd8 is the /root, sda5 was and is the /home partition.
This is from the grub in my main 12.10 installation; the one in 12.04.2 is even more confused, with 69 entries, some of them with several lines of text without EOL tags.
Boots with lines 23 to 26, all proceed normally; booting from 17 to 22 produce a Ubuntu flash screen saying: "12.04 The disk drive for /home is not ready yet or does not exist", with options to wait, skip or xxx. [Edit:See below]
Pressing 's' for 'skip' produces an apparently normal GUI Login screen, but logging in merely recycles to the greeter login, as it would if there was no driver for the video/kernal.
Pressing 'Ctrl+Alt+F1' gives a normal tty saying it is 184.108.40.206-generic-pae and that is what 'uname -r' returns.
It also shows - above the login prompt - "No directory. Logging in with HOME=/", and after logging in 'ls' returns the normal list of Home folders.
Any suggestions for sorting out the confusion studied gratefully.
Please note: Grub Customizer is not a viable option as it produces multiple duplicate garbled entries with 12.10 & grub2 when there are several disks.
I am Posting separately about other problems.
Edit: The 'xxx' option referred to is 'm' for "manually recover" which drops to a Root prompt.
EDIT 2: The main problem has been cured by formatting both Root & Home and reinstalling.
Last edited by bogan; February 16th, 2013 at 10:00 PM.
Reason: note added. updated
"Better Solutions may bring Worsened Problems": After Lao Tse, b. circa 405BC. a contemporary of Confucius, who died circa 600BC.
They did things differently in those days, apparently!!