linux boot不成功如何debug

If the boot process does not succeed, you have several options to debug the situation.

Identifying your problem area

Remove ''rhgb'' and ''quiet'' from the kernel command line

Add ''rd.shell'' to the kernel command line. This will present a shell should dracut be unable to locate your root device

Add ''rd.shell rd.debug log_buf_len=1M'' to the kernel command line so that dracut shell commands are printed as they are executed

The file /run/initramfs/rdsosreport.txt is generated, which contains all the logs and the output of all significant tools, which are m