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Update docs for Ubuntu on Raspberry Pi for 20.04.4 release.

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Update the getting started instructions for Ubuntu on a Raspberry Pi to
use the new 20.04.4 LTS release.

Signed-off-by: Fernando Carolo <fcarolo@google.com>
This commit is contained in:
Fernando Carolo
2022-02-26 12:31:32 +00:00
committed by Richard Laager
parent 31db1ac4f1
commit e8771c6d84
1 changed files with 15 additions and 14 deletions
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29
docs/Getting Started/Ubuntu/Ubuntu 20.04 Root on ZFS for Raspberry Pi.rst
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@@ -20,8 +20,8 @@ System Requirements
- A Raspberry Pi 4 B. (If you are looking to install on a regular PC, see
:doc:`Ubuntu 20.04 Root on ZFS`.)
- `Ubuntu Server 20.04.3 (“Focal”) for Raspberry Pi 4
<https://cdimage.ubuntu.com/releases/20.04.3/release/ubuntu-20.04.3-preinstalled-server-arm64+raspi.img.xz>`__
- `Ubuntu Server 20.04.4 (“Focal”) for Raspberry Pi 4
<https://cdimage.ubuntu.com/releases/20.04.4/release/ubuntu-20.04.4-preinstalled-server-arm64+raspi.img.xz>`__
- A microSD card or USB disk. For microSD card recommendations, see Jeff
Geerling's `performance comparison
<https://www.jeffgeerling.com/blog/2019/raspberry-pi-microsd-card-performance-comparison-2019>`__.
@@ -156,30 +156,31 @@ be deleted.
#. Download and unpack the official image::
curl -O https://cdimage.ubuntu.com/releases/20.04.3/release/ubuntu-20.04.3-preinstalled-server-arm64+raspi.img.xz
xz -d ubuntu-20.04.3-preinstalled-server-arm64+raspi.img.xz
curl -O https://cdimage.ubuntu.com/releases/20.04.4/release/ubuntu-20.04.4-preinstalled-server-arm64+raspi.img.xz
xz -d ubuntu-20.04.4-preinstalled-server-arm64+raspi.img.xz
# or combine them to decompress as you download:
curl https://cdimage.ubuntu.com/releases/20.04.3/release/ubuntu-20.04.3-preinstalled-server-arm64+raspi.img.xz | \
xz -d > ubuntu-20.04.3-preinstalled-server-arm64+raspi.img
curl https://cdimage.ubuntu.com/releases/20.04.4/release/ubuntu-20.04.4-preinstalled-server-arm64+raspi.img.xz | \
xz -d > ubuntu-20.04.4-preinstalled-server-arm64+raspi.img
#. Dump the partition table for the image::
sfdisk -d ubuntu-20.04.3-preinstalled-server-arm64+raspi.img
sfdisk -d ubuntu-20.04.4-preinstalled-server-arm64+raspi.img
That will output this::
label: dos
label-id: 0xf66f0719
device: ubuntu-20.04.3-preinstalled-server-arm64+raspi.img
label-id: 0xddbefb06
device: ubuntu-20.04.4-preinstalled-server-arm64+raspi.img
unit: sectors
<name>.img1 : start= 2048, size= 524288, type=c, bootable
<name>.img2 : start= 526336, size= 6052348, type=83
The important numbers are 524288 and 6052348. Store those in variables::
<name>.img1 : start= 2048, size= 524288, type=c, bootable
<name>.img2 : start= 526336, size= 6285628, type=83
The important numbers are 524288 and 6285628. Store those in variables::
BOOT=524288
ROOT=6052348
ROOT=6285628
#. Create a partition script::
@@ -250,7 +251,7 @@ be deleted.
#. Loopback mount the image::
IMG=$(sudo losetup -fP --show \
ubuntu-20.04.3-preinstalled-server-arm64+raspi.img)
ubuntu-20.04.4-preinstalled-server-arm64+raspi.img)
#. Copy the bootloader data::