<div dir="ltr"><br><div class="gmail_quote">---------- Forwarded message ----------<br>From: <b class="gmail_sendername">Kenneth Freidank</b> <span dir="ltr"><<a href="mailto:kenneth.freidank@gmail.com">kenneth.freidank@gmail.com</a>></span><br>Date: Sat, May 19, 2018 at 8:02 PM<br>Subject: Re: [Arm-dev] rainbow screen after "yum update" on 5/18/2018<br>To: Pablo Sebastián Greco <<a href="mailto:pablo@fliagreco.com.ar">pablo@fliagreco.com.ar</a>><br><br><br><div dir="ltr"><div>Thank you for the suggestion. I burned another sd card, and my PI3 booted, so it is definitely the sd card with the problem.</div><div>After booting, I was able to mount the bad sd card with a USB port adapter.</div><div># mount /dev/sda3 /mnt <-- the main linux partition</div><div>df on /mnt showed 46% full</div><div># mount /dev/sda1 /mnt <-- the ms-dos boot partition</div><div>df on /mnt showed 32% full but I did get an "unmounted properly", may contains errors, run fsck</div><div><br></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Sat, May 19, 2018 at 4:44 PM, Pablo Sebastián Greco <span dir="ltr"><<a href="mailto:pablo@fliagreco.com.ar" target="_blank">pablo@fliagreco.com.ar</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi Kenneth<br>
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El 19/5/18 a las 14:18, Kenneth Freidank escribió:<span><br>
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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 <a href="https://www.raspberrypi.org/forums" rel="noreferrer" target="_blank">https://www.raspberrypi.org/fo<wbr>rums</a>, search "raspberry pi3 stuck on rainbow screen after Jessie update".<br>
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Removed micro card and read files on another machine<br>
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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.<br>
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The kernel is kernel-4.14.27-v7.1.e7.img dated 3/19/2018.<br>
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Other files bookcode.bin, fixup*.*, LICENCE.broadcom, start*.elf, COPYING.linux all date 3/16/2018.<br>
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A file initrd-plymouth.img dates 2/26/2018.<br>
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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.<br>
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Looking at that amount of older kernels makes me suspect that you run out of space in /boot while updating, please check that .<span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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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.<br>
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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.<br>
Thanks.<span class="m_2161018286411327625HOEnZb"><font color="#888888"><br>
Pablo<br>
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