Advanced
Advanced [BOOT] Options
Things you might need to know
It's worth appreciating that FlashLinux makes a certain number
of assumptions about your system in order to make life easier for the average
user. In some cases (and for more advanced (!) users) there are things
you can do at boot time that will give you more choice over what your
system does and how it interacts with your hardware.
Adding options to the kernel at boot time
When faced with the "grub" boot menu, select the boot option you're interested in (the second option down to boot the USB key is normal) and press the "E" key to edit the entry. Then use the down arrow or cursor key to select the like starting with the word "kernel", pressing "E" again to edit the line. You should then be able to pan left and right through the default kernel options (with the left / right arrow / cursor keys) and make modifications.
When you've finished making changes, press "Enter" to save the
changes and press "b" to boot the system with your changes taken into
account. Note that these changes are NOT persistent and will be lost on reboot.
To save the changes you will need to boot your system, mount your boot
device on /boot and change the options in /boot/grub/grub.conf.
Recognising USB keys
How does FlashLinux know where things are? Well, it looks for a boot partition on all available block devices by searching for a ".encryptec" file, the first device found with this device in it's root directory is taken as the boot device and that partition is taken as the boot partition. Partition number #2 on that device is then taken as the ROOT device. (normally partition 1 is a 4Mb boot partition and partition 2 is the 240Mb root)
To change this behaviour, you can add the following option;
usbroot=<n>
This forces FL to use partition <n> as the ROOT
filesystem as opposed to partition number #2. So for example, if for
some (strange) reason you had a 4Mb boot partition, a 64Mb DOS
partition and then a large FL parition (in slot 3) , you could add the
line;
usbroot=3
And the system should boot as desired.
Mounting a key on /home
This is relatively easy, format a key with an ext2 partition and write a zero lengh file in it's root called ".home".
Ignoring local hard drives
Once upon a time, some strange partitions caused the local
hard disc detection to hang up and cause FL not to boot properly. This
[should] be fixed. However if you don't want your machine to see the
local hard drives automatically, add the "nodisc" option.
Using a Modem
To stop the machine defaulting to and trying to boot up in a LAN configuration, add the option "nodhcp".
Changing the default screen resolution for "X"
Modify the existing screen resolution option on the command line, for example you can limit the available resolutions by changing the 1280x1024 to 1024x768. Note that once the machine has booted you can cycle through available resolutions using <CTRL><ALT><+>.
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