On 04/09/2019 16.12, ToddAndMargo via users wrote:
On 9/3/19 10:59 PM, John Harris wrote:
On Tuesday, September 3, 2019 10:03:21 PM MST ToddAndMargo via users wrote:
Hi All,
I have a flash drive with about four partitions on is.
Lets call it /dev/sdc.
Can I tar sdc or am I stuck with tarring the partitions?
Any drawback to this?
If you were to `tar` it, you'd be making an archive with a single file named
'sdc'. I suggest you do this:
dd if=/dev/sdc of=/path/to/file
gzip /path/to/file
(Feel free to use some other software for compression)
This looks like what I want. Thank you!
Is there a way to pipe the dd into the gzip file?
As for your question (but see later), yes:
dd if=/dev/sdc | gzip >file.gz
but
- gzip may not be the most suitable compression
- to improve the compression, mount each partition and create a large file of zeroes
sudo mount /dev/sdXn /path/to/mountPoint
dd if=/dev/zero of=/path/to/mountPoint/zero
rm /path/to/mountPoint/zero
sudo umount /path/to/mountPoint
Now you can do the dd and expect a smaller gz file.
However, the most important question that needs answering is this:
What is the purpose of this exercise?
- is this for backup - not expecting to read it again.
dd is OK
but clonezilla will do a better job (no need to do the zero thing)
- is this to allow transferring the data to another USB disk
clonezilla is your friend again
- will you need regular access to individual files on these partitions?
mount each partition and copy (rsync) the content to where you want it
HTH
--
Eyal at Home (fedora@xxxxxxxxxxxxxx)
_______________________________________________
users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
