============================================= cpio
cat modules |cpio -H crc -i -d	# extract from 'modules', files and directories
find . -print | cpio -oav -H newc --block-size=20 > $TAPE_DRV
====================== copy root file system
cd /
find . -xdev | cpio -pm /mnt/newroot
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cp -ax / /mnt/newroot