How to disable firmware checksum verification on boot?

[neuer_unraider]

Hi,

 

I want to optimize the boot time of my UNRAID. I want to skip any bz* files/firmware verification. I know it's a risk to my data integrity, but I am willing to take that risk. This is by far the biggest chunk of startup time.

 

How can I achieve that?

 

Thanks!

[bmartino1]

not sure if it is possible, as Unraid loads the bzr data and checks via a md5 hash on and from the drive. the bzr firmware they used als checks grabs teh GUID and UUID of the drive and finds it by name UNRAID (from my testing, this is why it can't be installed on a standard HD. Unless you rewrite the entire bzr image.)

 

Main > Flash at bottom you may get it to work by adding a grub boot option..

 

DO AT YOUR OWN RISK!!!!

 

fsck.mode=skip

https://askubuntu.com/questions/1250119/how-to-skip-filesystem-checks-during-boot

 

terminal>

set check_signatures=no

https://unix.stackexchange.com/questions/126286/grub-efi-disable-signature-check

 

The flash drive gets mounted as /boot in unraid and sometimes generates logs and error with its reads and writes:

https://askubuntu.com/questions/1229050/how-do-i-disable-filesystem-checking-on-boot-in-20-04

a log may need to be zero-ed out.

tune2fs -c 0 /dev/yourdevicehere

 

kernel /bzimage
append initrd=/bzroot check_signatures=no fsck.mode=skip

 

Edited April 16 by bmartino1

[itimpi]

On 4/16/2024 at 3:10 PM, neuer_unraider said:

I want to skip any bz* files/firmware verification.

 

I suspect that it is not the verification that takes the time, but simply uncompressing the archives and loading them into RAM to run Unraid.  Having said that If it really does speed up the Unraid boot time by any appreciable amount it would be good to know.

[neuer_unraider]

Thanks, it makes total sense. It's USB2 after all. I decided to not try it out, because the booting anyway needs to put the firmware into the RAM, so there is nothing saved skipping firmware checksum.