Hi Thomas Schmitt,
> I wonder what is meant by "add some tweaks".
1. Made grub use UUID instead of device name to identify partition where
to find the grub files
---
# create grub.cfg to match iso file's name
echo -e "$inversvid tweak grub ...$resetvid"
# tweak 3: search by UUID
sleep 2
partprobe
sleep 2
targ1=$(mktemp -d --tmpdir dus.XXXXXXXXXX)
uid2=$(lsblk -o uuid,label "$target" |grep -i 'usbboot'|sed "s% *usbboot%%")
uid3=$(lsblk -o uuid,label "$target" |grep 'isodevice'|sed "s% *isodevice%%")
echo "uid2=$uid2"
echo "uid3=$uid3"
mount -U "$uid2" "$targ1"
sleep 2
if [ "$uid3" != "" ]
then
sed -i '/set isofile/'a" search --set=root --fs-uuid $uid3"
"$targ1"/boot/grub/grub.cfg
sed -i 's/(hd0,3)/($root)/' "$targ1"/boot/grub/grub.cfg
if [ $? -ne 0 ]
then
error="$error - sed: tweak 3 grub.cfg"
result="target drive might work, but setting 'search by UUID' failed :-("
echo "$result"
fi
fi
umount "$targ1"
rmdir "$targ1"
sleep 2
partprobe
sleep 1
}
---
# tweak 1: maybe modify label of partition for persistence
mntpt=$(mktemp -d --tmpdir dus.XXXXXXXXXX)
mount -o loop "$source" "$mntpt"
syslbl=$(lsblk -o label,mountpoint | grep "$mntpt"|sed "s% *$mntpt%%")
umount "$mntpt"
sleep 2
isover=$(<<< "$syslbl" grep -o ' [0-9]*\.'|grep -o '[0-9]*')
pptarg=$(lsblk -lo name,label "$target" |grep writable|sed -e 's/ .*//' -e
's#^#/dev/#')
if [ $isover -lt 20 ]
then
tune2fs -L casper-rw "$pptarg"
sleep 1
fi
# tweak 2:
# To make Firefox work in Jammy & newer:
# apparmor.service.d/30_live_mode.conf: ConditionPathExists=
if [ $isover -ge 22 ]
then
targ1=$(mktemp -d --tmpdir dus.XXXXXXXXXX)
/bin/echo -e "$inversvid To make Firefox work in Jammy & newer $resetvid
apparmor.service.d/30_live_mode.conf: ConditionPathExists="
umount "$targ1" 2>&1
targ0=$(mktemp -d --tmpdir dus.XXXXXXXXXX)
mount -o loop "$source" "$targ0" 2>&1
echo '$pptarg $targ1'": $pptarg $targ1"
mount "$pptarg" "$targ1" 2>&1
tghme=$(find "$targ0" -name '*ubuntu*.seed')
# echo "$tghme"
tghme=${tghme##*/}
tghme=${tghme%.seed}
if [ "$tghme" == "ubuntustudio" ]
then
tghme='ubuntu-studio'
elif [ "$tghme" == "" ]
then
tghme=$(grep -om1 'ubuntu-kylin' "$targ0"/casper/filesystem.manifest)
fi
echo "target's home directory: /home/$tghme"
mkdir -p "$targ1"/upper/home/"$tghme"/.config/autostart
mkdir -p "$targ1"/upper/usr/local/sbin
cp /usr/share/mkusb/fixfox.desktop
"$targ1"/upper/home/"$tghme"/.config/autostart
cp /usr/share/mkusb/fixfox "$targ1"/upper/usr/local/sbin
umount "$targ1" "$targ0" 2>&1
rm -r "$targ1" "$targ0"
# read -p "press Enter to continue"
fi
---
I think tweak 3 is most relevant in this case (of this bug report).
I have also noticed that it is difficult to 'make all computers happy
with the same configuration' even within the group that want an MSDOS
partition table.
The bug of this report seems to be somewhat worked around by the version
in dus-iso2usb version 22.0.1, but I think old HP computers with
core2duo processors want a bootable flag on the partition where grub is
located. However, adding that boot flag seems to stop booting in UEFI
mode. I am trying to make a configuration work for all these test cases
...
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https://bugs.launchpad.net/bugs/1922342
Title:
Impish live session takes ages to boot on BIOS systems
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