I had sudo apt update & sudo apt upgrade'ed my raspberry pi 4 with raspberry OS. The upgrade process stalled while unpacking. or at least I thought it did. nothing happened for minutes while unpacking and the led stoped flashing. After a while I pulled the plug. Now its constantly rebooting. I have a home assistant configuration on there, but I cant log in via SSH anymore.

Can I fix this? Or at least save my HA & node red configs that ran in docker?

edit: I have a NOOBS partition RECOVERY.

I stuck the SD Card in my mac, bot it only shows the RECOVERY and boot partition

  • I wonder if you add init=/bin/sh to your cmdline.txt file (in boot) if the Pi would at least boot enough to see what the issue is
    – Bravo
    Sep 11, 2021 at 1:09

1 Answer 1


Interrupting an upgrade may leave your OS in corrupted state.

No one can tell you how to fix it; indeed most of us would just restore from backup or do a fresh install.

In fact there is NO RECOVERY partition on a normal Raspberry Pi OS OS.

If you want to attempt recovery of your data use a fresh SD Card.

"how would I attempt recovery with a fresh SDcard?"

You can do this on any Linux computer (including the Pi using a fresh install of Raspberry Pi OS).

See https://raspberrypi.stackexchange.com/a/102090/8697

Unfortunately you have used NOOBS which makes everything more difficult (including the fact that most recovery hints you may find don't work).

The boot and root partitions will not be 1 or 2 - you will have to determine these.
sudo fdisk -l /dev/sda should show the partition layout.

This will enable you to recover your home directory. You could try accessing files in the root partition, but this requires more expertise and, frankly, most experienced users wouldn't bother as it is risky and more work than doing a fresh install.

"I have a NOOBS recovery partition. Could that help?"
Absolutely NOT - this is to do a fresh install, and would wipe everything. Fortunately NOOBS is now hidden, and only used by some vendors.

  • Forgot to mention and updated question. I have a NOOBS recovery partition. Could that help? I do have an image of the SDCARD. But there were crucial changes ever since and I do need to try to get those off the SDCard.
    – Bravewart
    Sep 11, 2021 at 9:13
  • how would I attempt recovery with a fresh SDcard?
    – Bravewart
    Sep 11, 2021 at 10:45

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