LiveCD/USB Guide
How to troubleshoot the boot process

## Troubleshooting the Boot Process

### Boot Options for Debugging

#### bp

set a breakpoint in linuxrc script

#### check

check the md5 sum for linuxfs and iso files

#### db+

enable limited linuxrc debugging

#### db-

disable limited linuxrc debugging

#### debug

puts kernel in debug mode

#### delay

wait "delay" seconds before looking for the linuxfs file

#### mem

pretend system has less memory

#### nodeb

don’t install .deb files from the deb/ subdirectory

#### noetc

don’t load /etc files from the etc/ subdirectory

#### pk

control kernel messages during bootstrap

#### pki

control kernel messages at start of init

#### quiet

turn off many kernel messages

#### rootdelay

wait this many seconds before booting

#### verbose

the level of verbosity

#### wait

wait "wait" seconds before running init