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dd:tldr:4e0b2
dd: Clone a drive to another drive with 4 MiB block and ignore error.
$ dd if=/dev/${source_drive} of=/dev/${dest_drive} bs=${4194304} conv=${noerror}
try on your machine
The command you provided is using the dd
utility to perform a data transfer between two devices.
Here is the breakdown of the command and its components:
dd
: The utility used for converting and copying files, and also for creating disk images.if=/dev/${source_drive}
: Theif
flag specifies the input file/source of the data transfer. In this case, it is set to/dev/${source_drive}
./dev/
is a directory in Unix-like systems that contains special files representing devices.of=/dev/${dest_drive}
: Theof
flag specifies the output file/destination of the data transfer. Here, it is set to/dev/${dest_drive}
.bs=${4194304}
: Thebs
flag sets the block size for data transfer. In this case, it is set to${4194304}
bytes, which is equivalent to 4 megabytes.conv=${noerror}
: Theconv
flag specifies the conversion options used during the data transfer.noerror
indicates thatdd
should continue the operation even if read errors occur.
To use this command, you need to replace ${source_drive}
and ${dest_drive}
with the appropriate device names within the /dev/
directory on your system. Additionally, ${4194304}
should be replaced with the desired block size for your transfer, and ${noerror}
can be changed to other conversion options if required.
Note: Be cautious when using dd
as it can cause data loss if misused, especially with inappropriate source and destination devices. Double-check the device names to avoid accidentally overwriting important data.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.