How to specify boot slot for HA OS update

mclardass · July 17, 2025, 6:29pm

I have a working prod HA box (RPi CM4, Rasp I/O Board) and am currently running OS 15.2. I updated to 16.0 and, like others, ran into networking issues. I reverted to 15.2 by simply changing the boot-slot and everything is functional again.

While I troubleshoot, and assuming 16.1 includes fixes, is it possible to keep the working 15.2 slot and update the inactive 16.0 slot with the next release? In the output below, could I force os update to overwrite slot A and maintain slot B?

board: rpi4-64
boot: B
boot_slots:
A:
state: inactive
status: good
version: “16.0”
B:
state: booted
status: good
version: “15.2”
data_disk: CT250BX100SSD1
update_available: true
version: “15.2”
version_latest: “16.0”

Thanks!

WallyR · July 18, 2025, 10:27am

The overwrite will always be of the inactive slot.

mclardass · July 18, 2025, 8:08pm

Thanks for clarifying, that makes sense and I guess I’ll just wait until 16.1 drops or I figure out the network issue.

techarea · August 13, 2025, 10:10pm

I had the same idea.
But even after updating to 16.1, my rpi5 still won’t boot from slot A.

techarea · August 13, 2025, 10:49pm

Ok, had to reinstall.
The partition of my Micro-SD card was damaged.
The size of the partition didn’t match (checked with Disk Utility App).
Didn’t know that this piece of fine software doesn’t backup HACS stuff.

ShadowFist · August 14, 2025, 11:10am

It does if you tell it to do so when setting backups: