Access files from another linux partition using “mount”

I had to copy an installer file over to my new Ubuntu installation from a previouly installed and abandoned Debian Etch install on a different partition.

1. list all partitions of each device

sudo sfdisk -l

Device Boot Start End #cyls #blocks Id System
/dev/sda1 * 0+ 12159 12160- 97675168+ 83 Linux
end: (c,h,s) expected (1023,254,63) found (895,254,63)
/dev/sda2 12160 12767 608 4883760 5 Extended
start: (c,h,s) expected (1023,254,63) found (896,0,1)
end: (c,h,s) expected (1023,254,63) found (479,254,63)
/dev/sda3 12768 24775 12008 96454260 83 Linux
/dev/sda4 24776 25383 608 4883760 82 Linux swap / Solaris
/dev/sda5 12160+ 12767 608- 4883728+ 82 Linux swap / Solaris

from this that I determined that the old partition is called ‘sda1′

2. create a mountpoint called ‘debian’

cd /mnt

sudo mkdir debian

3. mount the partition

sudo mount /dev/sda1 /mnt/debian

4. copy the installer file over from the old partiton to the new

sudo cp /mnt/debian/usr/src/coldfusion8-lin.bin /usr/src

et voila, the 380MB installer is copied over in just a few seconds as opposed to the ten or fifteen minutes that it would take to download it afresh from Adobe.