partitioning - Unclear about partition tables and copying full disk with dd - Ask Ubuntu


i don't understand how dd treats partition tables when copying full disk.

i backed whole disk (which had multiple partitions) using sudo dd if=/dev/sdb conv=sync,noerror bs=64k | gzip -c > /media/notsdb/backfile.img.gz

now have brand new disk without partition table want put these partitions onto. reverse command should gunzip -c /media/notsdb/backfile.img.gz | sudo dd of=/dev/sdb conv=sync,noerror bs=64k. make sense , have put partition table onto disk first? (the operation takes 10 hours i'd know before it)

thanks, craig

copy over, use gparted (or similar) resize / move partitions - dd recreate old partition scheme, bitwise copy & applies no 'intelligence' operation.

this works if new disk same size or larger!


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