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Re: Debian 8 and Debian 9 Dual Boot



On 12/21/2017 04:36 AM, Felix Miata wrote:
Felix Miata composed on 2017-11-29 13:55 (UTC-0500):

Dan Norton composed on 2017-11-28 22:15 (UTC-0500):
dan@debian8:~$ sudo fdisk /dev/sda
Command (m for help): p
Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: A615A904-0620-459F-BF44-5E53E54FDF24
Device         Start        End    Sectors   Size Type
/dev/sda1       2048     411647     409600   200M BIOS boot
/dev/sda2     411648   16783359   16371712   7.8G Linux swap
/dev/sda3   16783360  151001087  134217728    64G Linux LVM
/dev/sda4  151001088  285218815  134217728    64G Linux LVM
/dev/sda5  285218816  419436543  134217728    64G Linux LVM
/dev/sda6  419436544  553654271  134217728    64G Linux LVM
/dev/sda7  553654272 1953525134 1399870863 667.5G Linux filesystem
Is there a problem here?
Maybe. I don't have any GPT-partitioned disks...
No longer the case. I bought a G250 Kaby Lake Intel motherboard. I currently
have Stretch, openSUSE Tumbleweed and openSUSE 15.0 Alpha installed. openSUSE
42.3's installer hangs in the bootloader configuration step.
https://bugzilla.opensuse.org/show_bug.cgi?id=1073201

http://fm.no-ip.com/Tmp/Dfsee/gb250L02.txt  is my partition log. The upper part
is generated by the partitioner I use. The bottom is gpart -l output for comparison.

I haven't seen you post the debian-user list in a while. How's multiboot going
for you?

Not bad, actually. I'm nearly ready to try multiboot with GPT again on my (elderly) HP desktop machine. It only has a 1T sda, but that seems like wretched excess.

Currently jessie, stretch, and buster are installed with primary/logical partitioning. Each is in a separate volume group, with logical volumes for /, /var, /tmp, /home, and swap. IMHO, the following guidelines are helpful:

1. Do all partitioning with the installer. Don't try to prepare the EFI for example with other partitioners. Partitioning can be daunting, but if you patiently and sometimes repeatedly use the installer UI, you can set up the desired partitioning. The installer UI could be improved. :-)

2. You will make extra work for yourself by having a common swap partition for all installations. With the common swap, each new installation gave rise to these messages:

  a. "gave up waiting for suspend/resume device"

  b. "a start job is running for dev-disk-by\..."

  c. "failed to connect to lvmetad"

STW can reveal ways to avoid these messages, but they are a PITA and avoidable by each volume group having its own swap.

There are still mysteries I have not solved. For some reason, GRUB has decided that after POST, you only need 3 seconds to choose which installation to boot. GRUB has resisted my efforts to change that timeout value. I've been able to change the boot order in NVRAM, but not the timeout.

Before moving on to multiboot with LVM and GPT, I'd like to change the menu entries to something more consistent. The last install is referred to as "Debian GNU/Linux" but that's ambiguous. Which Debian GNU/Linux? If each entry was in the form "Debian GNU/Linux 9 (stretch) (on /dev/mapper/vol2-root)" that would really be explicit. Also I want some more time to mull over which to boot.

 - Dan


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