Prerequisites for Dual Image Upgrade

Purpose

Before you upgrade to dual image, ensure that you meet the following broad level requirements.

Action

• Dual upgrade requires having a console connection (and not SSH) to the device.

• We recommend the following working USB models when you are upgrading from an USB.

  • LEXAR USB Flash Drive

  • UNIGEN PSK8000S1

• The dual image upgrade feature is supported on CTPOS 7.3Rx, 9.0R1, 9.1R1, and 9.1R2 releases. However, if you want to upgrade any earlier CTPOS versions to CTPOS 9.1R3.1, then you must first upgrade the earlier versions to CTPOS 7.3R7-1 or CTPOS 7.3R8 on CTP150/2000 devices and to CTPOS 9.1R1 or 9.1R2 on CTP151 device.

• The dual image upgrade feature is supported on CTP 2000 (PP833 and PP332) and CTP 150 devices running CTPOS 7.3R7-1 or 7.3R8, or 9.0R1 releases. This feature is also supported on CTP 151 device running CTPOS 9.1Rx releases.

• Partition geometry will be different on the two CTP2000 category of platforms—PP833 and PP332. CTP150 platforms will have legacy bios supported partitions while CTP151 platforms will have UEFI partitions on the disk.

  The partitions geometry details on both category of platforms are:

  Table 1: Legacy Bios Supported Platforms–CTP2000 (PP833, PP332), CTP150

  Label	Size	Type
  CTP_BOOT	100M	Ext3
  CTP_ROOT_1	1400M	Ext3
  CTP_HOME_1	50M	Ext3
  CTP_VAR_1	50M	Ext3
  CTP_LOCAL_1	400M	Ext3
  CTP_ROOT_2	1400M	Ext3
  CTP_HOME_2	50M	Ext3
  CTP_VAR_2	50M	Ext3
  CTP_LOCAL_2	400M	Ext3

  Following partitions will be created on CTP151 for dual image and first two partitions will be common for both images. The first partition (BIOS Type) will have 1M size and will have no label name. This partition is required for supporting dual boot feature (legacy Bios + UEFI boot).

  Table 2: b. UEFI Supported Platforms–CTP151

  Label	Size	Type
  	1M	BIOS
  CTP_EFI	100M	EFI
  CTP_ROOT_1	2G	Ext4
  CTP_BOOT_1	100M	Ext4
  CTP_HOME_1	100M	Ext4
  CTP_VAR_1	100M	Ext4
  CTP_LOCAL_1	670M	Ext4
  CTP_ROOT_2	2G	Ext4
  CTP_BOOT_2	100M	Ext4
  CTP_HOME_2	100M	Ext4
  CTP_VAR_2	100M	Ext4
  CTP_LOCAL_2	100M	Ext4
  Total Size	670M

• Following files will be available in CTPOS 9.1R3 Release to install the dual image:

  File Name	Purpose
  acorn_310_dual_image_upgrade_ctp150_ctp2k-02_-03_211221.tgz	Dual image upgrade archive file for Legacy BIOS platforms (CTP150, PP332(02), and PP833(03)) running 9.0x image
  acorn_310_dual_image_upgrade_ctp151_211221.tgz	Dual image upgrade archive file for UEFI platforms (CTP 151) running 9.1x image
  acorn_429_dual_image_upgrade_ctp150_ctp2k-02_-03_211221.tgz	Dual image upgrade archive file for Legacy BIOS platforms (CTP150, PP332 & PP833) running 7.x image
  CTPOS_9.1R3-1_partitions_ctp150_ctp2k-02_-03_211221.tgz	Image partitions archive file for CTP 150, PP833 and PP332. This file needs to be copied in /mnt/ramdisk during later execution of dual upgrade process as suggested by logs.
  CTPOS_9.1R3-1_partitions_ctp151_211221.tgz	Image partitions archive file for CTP 151. This file needs to be copied in /mnt/ramdisk during later execution of dual upgrade process as suggested by logs.
  ctpos_usb_install_9.1R3-1_ctp150_ctp2k-02_-03_211221.img	USB install image file for CTP 150 and PP833 systems. Note: This image is not supported on PP332 system.
  ctpos_usb_install_9.1R3-1_ctp151_211221.img Note: This file is provided as a compressed file (.gz) which was compressed using gzip. Instructions on how to uncompress it are included in the "Installing Dual Image on CTP151 from USB" section below.	USB install image files for CTP 151 systems.