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Prepare sandbox: Virtual Machine or PC without hard disks, only CD or USB-flash drive.
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Boot from ULFS Live CD/DVD.
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Prepare USB-flash drive:
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Partitions table: DOS
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Partitions: At least one bootable Linux partition (ext4) bigger than ULFS Live CD/DVD iso-image size (bigger than 5GB for DVD)
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Open root console
su
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Create mount points
mkdir /mnt/tmp
mkdir /mnt/cd
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Mount Drives
mount /dev/sda1 /mnt/tmp
mount /dev/sr0 /mnt/cd
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Copy linux folder from CD to USD
cp -rv /mnt/cd/linux /mnt/tmp
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Run boot installer script
cd /mnt/tmp/linux/boot
./bootinst.sh
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Check result with qemu
qemu /dev/sda
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If qemu boot vm from USB-flash drive, work is done!