---------- Forwarded message ---------- From: Kenneth Freidank <kenneth.freidank at gmail.com> Date: Sat, May 19, 2018 at 8:02 PM Subject: Re: [Arm-dev] rainbow screen after "yum update" on 5/18/2018 To: Pablo Sebastián Greco <pablo at fliagreco.com.ar> Thank you for the suggestion. I burned another sd card, and my PI3 booted, so it is definitely the sd card with the problem. After booting, I was able to mount the bad sd card with a USB port adapter. # mount /dev/sda3 /mnt <-- the main linux partition df on /mnt showed 46% full # mount /dev/sda1 /mnt <-- the ms-dos boot partition df on /mnt showed 32% full but I did get an "unmounted properly", may contains errors, run fsck On Sat, May 19, 2018 at 4:44 PM, Pablo Sebastián Greco < pablo at fliagreco.com.ar> wrote: > Hi Kenneth > > El 19/5/18 a las 14:18, Kenneth Freidank escribió: > >> I just updated my Centos7 Pi3 "yum update" on 5/18/2018, and now I am >> facing a rainbow screen. Red pwr light is nice and strong, even changed >> power supplies. Green ACK light blinks 2 times and stays off. Screen is >> stuck on the rainbow - no activity, nothing, with or without the USB drive, >> nothing. USB drive does not power up either - nothing. Tried pressing the >> keys 1 to 4 at power up, then any key on multiple pwr ups, no effect. >> Found a similar post on https://www.raspberrypi.org/forums, search >> "raspberry pi3 stuck on rainbow screen after Jessie update". >> >> Removed micro card and read files on another machine >> >> Without listing all the files individually, kernel7.img, the dtb files >> bcm2708-rpi-xxx.dtb, bcm2710-rpi-xxx.dtb, bcm2835-rpi-xxx.dtb, >> bcm2836-rpi-xxx.dtb, gcm2837-rpi-xxx.dtb. All are dated 5/18/2018, the day >> of my yum update. >> >> The kernel is kernel-4.14.27-v7.1.e7.img dated 3/19/2018. >> >> Other files bookcode.bin, fixup*.*, LICENCE.broadcom, start*.elf, >> COPYING.linux all date 3/16/2018. >> >> A file initrd-plymouth.img dates 2/26/2018. >> >> I also see what look like older kernel files: kernel-4.9.75-v7.1.el7.img >> - 1/9/2018; kernel-4.9.70-v7.1.el7.img - 12/19/2017; >> kernel-4.9.64-v7.1.el7.img - 11/24/2017; kernel-4.4.26-v7.1.el7.img - >> 10/22/2016. >> > Looking at that amount of older kernels makes me suspect that you run out > of space in /boot while updating, please check that . > >> >> Any ideas on how to downgrade to previous kernel or how to fix this? >> Can't get into single user mode - pressing keys on pwr up has no effect. I >> don't know enough about the kernel and the boot process to start messing >> with them. I am stuck. >> > > Copying some of the older files in /boot should make the older kernel > work, but please don't do that until we checked for disk space. > Thanks. > Pablo > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/arm-dev/attachments/20180519/ca09eca2/attachment-0006.html>