RescueBoot during boot-up failed

Summary

RescueBoot during boot-up may fail, showing the specified error message in GRUB.

Causes

This error happens when the path to the ISO file changes after mounting "/opt" on a different partition or device. GRUB generates its entry based on information obtained from the OS, referencing only the device information before the device is mounted. If "/opt" is mounted on a separate device, GRUB displays different path information, leading to RescueBoot failure during boot.

Mount point on OS  # lsblk NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT sda    8:0    0    20G  0 disk ├─sda1 8:1    0   500M  0 part /boot/efi ├─sda2 8:2    0  1000M  0 part /boot ├─sda3 8:3    0    16G  0 part / └─sda4 8:4    0   2.5G  0 part [SWAP] sdb    8:16   0     3G  0 disk └─sdb1 8:17   0     3G  0 part /var sdc    8:32   0     6G  0 disk └─sdc1 8:33   0     6G  0 part /opt sdd    8:48   0     5G  0 disk └─sdd1 8:49   0     3G  0 part /home sr0   11:0    1 993.6M  0 rom  # ls /opt/Actiphy/LinuxISO/RescueBoot/ AIPBE_x64_Debian11.iso

Device on GRUB  grub> ls (hd0) (hd0,gpt4) (hd0,gpt3) (hd0,gpt2) (hd0,gpt1) (hd1) (hd1,gpt1) (hd2) (hd2,gpt1) (hd3) (hd3,gpt1)  Referencing "/dev/sdc1" device grub> ls (hd2,gpt1)/Actiphy/LinuxISO/RescueBoot/ ./ ../ AIPBE_x64_Debian11.iso

The specified path mentioned above transforms into: 

ISO path on OS /opt/Actiphy/LinuxISO/RescueBoot/AIPBE_x64_Debian11.iso  ISO path on GRUB (hd2,gpt1)/Actiphy/LinuxISO/RescueBoot/AIPBE_x64_Debian11.iso  *Since "/opt" does not exist in (hd2,gpt1), the path is different.

Workaround

Avoid mounting the "/opt" directory on a separate partition or device.

Target Product

ActiveImage Protector 2022 Linux

(13451228593817)