[Galaxy Kirin V10] [server] system startup failed

1、 If it worked well before , The system reports an error after restart , commonly 80% Because fstab The problem of , Think back to whether you have added external storage before , A modified /etc/fstab, If yes, it is usually because of storage exceptions （ For example, network storage cannot be connected , Local storage path changes ） Cause the system to fail post , Cause it can't start normally ;

Processing mode ： Enter single user , modify /etc/fstab, Comment out the new content temporarily , Then report an error and exit , perform /usr/sbin/reboot  -f Restart the system , Analyze the failure reason after entering the system normally .

2、 Check whether it has been turned on kysec, If it's on kysec Cause system restart failure , You can enter a single user and close it first kysec, See if it can restart normally , Then contact the technician to check the problem .

3、 The system starts and reports an error ：

“EFI stub:Booting Linux Kernel...

EFI stub:EFI_RNG_PROTOCOL unavailable,no randomness supplied

EFI stub:Using DTB from configuration table

EFI stub:Exiting boot services and installing virtual address map..”.

At this time, it is generally caused by network card failure , You can unplug all the network cables , If it can be started normally, it can be determined as a network card problem , Contact the whole machine to try to replace the network card device .

4、 The system starts and reports an error ：

“error：can't find command '[',error：invalid file name ‘efi/arm64-efi/all_video.mod’...”.

Fault analysis ： doubt grub problem , lookup grub.cfg file , Note some parameters to solve .

resolvent ： Single user ,vim /boot/efi/EFI/kylin.grub.cfg file , Put lines load_video,insmod gzio And yes set root='hd0,msdos1' Down to linux After some comments between lines , It can enter the system normally .