Qustions re using 'dd' command
by DownSouth from LinuxQuestions.org on (#5AP0R)
Hello
I'm intending to use the 'dd' command to transfer a Linux installation from one USB
to another USB. The target partition will be slightly larger than the source partition.
I have researched the details of the command and triple checked with other reliable
sources. However, there are a couple of questions I need answered before I begin.
I will use a host system, plug in the source USB and once it's mounted plug in the
target USB & run the command from the host system. Process will be performed
on a fairly basic machine with just 2GB ram.
First question: do both USBs need to be mounted or, just the source USB?
Logic suggests they should both be mounted, but logic without experience is why
a worthwhile forum such as LQ is necessary. :-)
Second question - the numerical figure in the command to specify the data transfer
rate - should that be kept to a fairly low level (say, 4096) to ensure accuracy?
The source partition is about 12GB.
thanks
DownSouth


I'm intending to use the 'dd' command to transfer a Linux installation from one USB
to another USB. The target partition will be slightly larger than the source partition.
I have researched the details of the command and triple checked with other reliable
sources. However, there are a couple of questions I need answered before I begin.
I will use a host system, plug in the source USB and once it's mounted plug in the
target USB & run the command from the host system. Process will be performed
on a fairly basic machine with just 2GB ram.
First question: do both USBs need to be mounted or, just the source USB?
Logic suggests they should both be mounted, but logic without experience is why
a worthwhile forum such as LQ is necessary. :-)
Second question - the numerical figure in the command to specify the data transfer
rate - should that be kept to a fairly low level (say, 4096) to ensure accuracy?
The source partition is about 12GB.
thanks
DownSouth