This is a bit confusing story. I will try to keep to the main path I am following now, but I guess a bit of background information is needed.
The system is good old BIOS and MSDOS partitioning.
This is (still) a 13.1 system. This is it’s fstab:
/dev/disk/by-id/ata-ST2000DM001-1CH164_Z1E89L2J-part2 / ext4 acl,user_xattr 1 1
/dev/disk/by-id/ata-ST2000DM001-1CH164_Z1E89L2J-part5 /home ext4 acl,user_xattr 1 2
/dev/disk/by-id/ata-ST2000DM001-1CH164_Z1E89L2J-part1 swap swap defaults 0 0
boven.henm.xs4all.nl:/home/wij /home/wij nfs noauto 0 0
tmpfs /tmp tmpfs size=25%,uid=root,gid=root,mode=1777 0 0
and fdisk -l
Disk /dev/sda: 2000.4 GB, 2000398934016 bytes, 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk label type: dos
Disk identifier: 0x00006df8
Device Boot Start End Blocks Id System
/dev/sda1 2048 14684159 7341056 82 Linux swap / Solaris
/dev/sda2 * 14684160 56629247 20972544 83 Linux
/dev/sda3 56629248 98590719 20980736 83 Linux
/dev/sda4 98590720 3907028991 1904219136 f W95 Ext'd (LBA)
/dev/sda5 98592768 518014975 209711104 83 Linux
Usage:
sda1 as Swap
sda2 is ext4 and mounted as /
sda3 is unused and planned for a new / on installing a new system
sda4 is extended
sda5 is ext4 and mounted as /home
a lot of free space where a new /home for a new installation is planned.
Time to upgrade to 15.1. I installed 15.1 using:
sda1 as Swap
sda3 as ext4 (no Btrfs) for /
a new sda6 of 200GB as ext4 (no zfs) for /home
This basicaly went well (although there was one lib… package which gave an error having an incorrect cheksum, it was skipped). Updated from the Update repos. Now I do have problems getting KDE Plasma to run.(after a few seconds it returns to the login screen). But as I can start at least one other DE, I consider the system as such and the users as configured correct.
The main reason installing on two free partitions is to have the old 13.1 still available for my wife doing what she wants until a full takeover to the new 15.1 can take place.
Grub menu shows four lines: two for 15.1 and two for 13.1, So it detected the other system.
But, booting from 13.1 takes me to a running green ruler (different greens below) instead of the 13.1 Gecko on a branch) and hitting esc show me the text in large VGA characters. After a lot of fast scrolling (I see upping the network, and starting LSB), it abrubtly stops, Black screen. Can do nothing except Ctrl-Alt-Del which restarts the system.
I tried to recover to the 13.1 Grub. Using the 15.1 as rescue system: booted, CTRL-Alt-F1 to the console,
mount /dev/sda2 /mnt
mount --bind /dev /mnt/dev
mount --bind /proc /mnt/proc
mount --binf /sys /dev/sys
chroot /mnt
mount -a
This indeed brings me to the 13.1 systems with all files (including in /home) available.
Start
yast
brings me the ncurses version. Start the boot module.
From there, I am stuck. I changed several things there and hoped that at the end Grub would be installed overwriting the 15.1 grub, but always I get the 15.1 menu back and the same lousy booting of 13.1
Anybody any suggestions how to recover the 13.1 grub (and forget for the time being the 15.1 installation, that can always be done again).