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This is of course a new parameter to the "make_slackware_live.sh" script.
It was added to allow the developer to make small changes to the file tree
of what is to become the ISO image, and then re-generate the ISO without
having to repeat all the other steps (potentially undoing the modifications).
Useful for debugging mostly.
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Or to be more precise: below 737.280.000 bytes (80min CDROM medium size)
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The addons/ and optional/ directory will be searched for *.sxz modules
even if they live in subdirectories. This allows you to organize your
modules instead of dumping them all into a single directory.
If a module fails to load (because it is corrupted for instance) liveinit
will mention this on screen and write the modulename to a file
'/mnt/live/modules/failed'.
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No more xaos or bsd-games, and the Tibetan TrueType font tibmachuni-font-ttf
has been removed as well. But you get cups back in their place.
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As documented in file "/usr/share/X11/xkb/rules/xorg.lst":
lv3 Key to choose 3rd level
lv3:ralt_switch_multikey Right Alt, Shift+Right Alt key is Compose
And as explained in https://help.ubuntu.com/community/ComposeKey :
There are four levels of keyboard entry. Selecting a level involves holding
a set of modifier keys down, this changes the function of all the other keys
on the keyboard. The levels are, by default:
Level Modifier Keys produced
-------------------------------
1 None Lowercase letters, numbers, etc.
2 Shift Uppercase letters, symbols printed on keyboard, etc.
3 AltGr Extra symbols not printed on the keyboard, some dead keys.
4 AltGr-Shift Even more symbols, more dead keys.
Dead keys are keys that appear to do nothing at first; they apply an accent
to the next letter you type.
Third and fourth level choosers:
Holding down the AltGr key and pressing another key will produce a third level
character. Holding down the AltGr and Shift keys (the order can be important)
and pressing another key will produce a fourth level character.
Note that some combinations are dead keys; an additional key-press is required
whereupon a diacritic will be added to the final character keyed.
Compose key:
Keying the combination Shift+AltGr (in that order), releasing these keys,
then entering two other keys will produce a special character.
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The file "0020-slackware_multilib-current-x86_64.sxz" (for Slackware64-current)
or "0020-slackware_multilib-14.2-x86_64.sxz" (for Slackware64 14.2) can be
extracted from the ISO afterwards and distributed separately and independently
from the Slackware Live ISOs.
If you want to add multilib to your persistent USB version of Slackware Live,
you just copy the above squashfs module into the /liveslak/addons/ directory
of the liveslak partition on the stick (this enables multilib by default).
or else copy it to /liveslak/optional/ if you want to enable multilib on boot
manually by adding a "load=multilib" boot parameter.
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Variable XKB can be set to "XkbLayout,XkbVariant,XkbOptions".
For example "xkb=ch,fr,compose:sclk,grp:alt_shift_toggle"
Note that the XkbOptions can be several comma-separated values.
The XkbLayout and XkbVariant values must not contain commas.
You can still set just the XkbVariant by adding something like "kbd=ch xkb=,fr"
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In 'make_slackware_live.conf' you can give that variable "LIVEUID" another
value than the default "live" if you want to create a Live Edition where
the Live user account is not called "live".
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This allows people to find the instructions on how to edit the boot
commandline in syslinux or grub more easily. Now it is here:
http://docs.slackware.com/slackware:liveslak#booting_the_live_os
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New parameter to the script:
-l|--lukshome <name> Custom path to the containerfile for your LUKS
encrypted /home (slhome by default).
Note: not only (just as with the persistence container) can you choose
a custom name for the the LUKS container file but you can also create it
in a subdirectory instead of in the filesystem root now.
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New parameter '-M' to the "make_slackware_live.sh" script will add
a squashfs module "0020-slackware_multilib-VERSION-ARCH.sxz" to the iso,
its contents based on the ./pkglists/multilib.* package repo definitions.
Only for the x86_64 architecture of course.
If you already have a USB Live, you can simply copy this module into the
directory "/liveslak/addons" to transform your pure 64bit Slackware Live
Edition into a multilib variant.
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Some explanation about what the 'debug' boot parameter does:
'debug=1' => enable some strategic pauses during boot while showing 'mount'
and 'blkid' output, so you can scroll back and inspect the proceedings
(just 'debug' also enables level 1).
'debug=2' => enable verbose script execution in addition to the above pause
moments.
'debug=3' => verbose script execution but without the mount/blkid info during
the strategically placed pauses.
'debug=4' => dumps you into a debug shell right before the switch_root.
No other pauses other debugging aids are offered like with levels 1, 2 or 3.
But you can check the health of your Live system before Slackware boots up.
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* iso2usb.sh: added '-r' parameter to refresh an existing USB Live stick
with data from a new Live ISO.
* boot: added 'nop=wipe' parameter which will cause all persistent data
(in the persistence directory or a persistent data container) to be
erased. This allows you to repair a case of corrupted persistent
data which can occur after you modified files that are part of a
squashfs module.
Note that this boot option will leave an encrypted /home un-touched!
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-r|--refresh =>
Refresh an existing Live USB stick with new ISO content.
The refresh option "-r" can be used when you have a Live USB stick and you
want to update the liveslak files with new versions on an ISO image file
which you downloaded/created.
The USB stick will not be formatted in this case, and user modifications
like LUKS-encrypted homedirectory or persistence data will not be touched.
The "system" squashfs modules will be replaced with the versions on the ISO
file and any squashfs module not present in the system/ directory of the ISO
will be deleted.
The "optional" and "addons" directories are treated a bit differently:
The files in there that you added yourself will not be deleted when
the content of these directories is refreshed with the content from the ISO
(unless of course your added files have the same name as one of the files
in the ISO).
The content of the /boot and /EFI directories will both be replaced with
whatever is on the ISO image.
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When the user loads a non-system squashfs module (for instance from the
optional or addons subdirectories) and this contains kernel modules,
then the kernel must be made aware using a "depmod -a" call.
The previous implementation did this at the end of rc.local but
that was too late in the boot process: the kernel needs to be aware
of the new modules straight from the start, so that udev can enable
the hardware which is supported by these new kernel drivers on time.
So the depmod call was moved to the live init script (inside the initrd).
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Sometimes your Slackware Live develops issues because the persistent data
storage is conflicting with new packages or data which you added to the
Live OS. This can be fixed by erasing persistent data, thereby reverting
the Live OS to its initial state - i.e. when the USB stick was booted
for the first time.
For this purpose the functionality of the existing "nop" boot parameter
was extended to allow the '=' and specifying a value of 'wipe'.
Note that the persistent data will be wiped before the Live OS boots, and
it does not matter if you are using a persistence directory or a container
file for storing persistent data.
This wipe includes all your persistent personal data in /home/
unless you have moved your /home into a container file on the USB stick.
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After doing your debug checks you can then type "exit" to exit
the debug shell. The init script will continue with the switch_root
and boot the OS.
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You can define SMP32="YES" in the script or in its .conf file,
if you want your Live ISO to boot the 32bit SMP kernel instead.
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It appears that other distros do not always contain "iso-info" which
is part of "libcdio". The "isoinfo" program ion the other hand,
which is part of "cdrtools" is more widely used.
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The "dialout" group is required for working with 3G USB modems and
ppp connections. If the user wants to play UNIX games, then the "games"
group membership is needed. And "disk" group was added for good measure.
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Eric Hameleers
