https://www.thinkwiki.org/w/api.php?action=feedcontributions&feedformat=atom&user=Bdeakin 2026-05-05T17:26:48Z User contributions MediaWiki 1.31.12 https://www.thinkwiki.org/w/index.php?title=How_to_copy_a_Linux_installation&diff=13504 2005-12-02T05:47:17Z

<p>Bdeakin: /* Disadvantages */</p> <hr /> <div>== Using dd to make a 1:1 copy ==<br /> <br /> === Advantages ===<br /> <br /> When dd is used to create the copy, it is copied at a sector by sector level. This means that in many circumstances, the new version will have it's boot sector set up and everthing. In situations where you are making a complete copy of the disk, even things like the IBM tools will be saved.<br /> <br /> === Disadvantages ===<br /> <br /> Because dd copies sector by sector it copies everything, including sectors that aren't allocated. This makes it a longer process. To update the backup copy, it must perform the whole process again, rather than simply updating the things that have changed.<br /> <br /> === Case 1: The Linux installation is on a separate Harddisk ===<br /> <br /> dd if=/dev/hd[a,b,c,..] of=/dev/hd[a,b,c,..] bs=2M<br /> <br /> Part of Sourcedrive : if=/dev/hd[a,b,c,..] the Letter &quot;a&quot; for the first Harddrive, b for the second, ....<br /> <br /> Part of Destinationdrive : of=/dev/hd[a,b,c,..] the Letter &quot;a&quot; for the first Harddrive, b for the second, ....<br /> <br /> === Case 2: The Linux installation is on a Partition ===<br /> <br /> (e.g. hda1 is the Partition with the Linux installation and hdb1 is the Destinationdrive)<br /> <br /> dd if=/dev/hda1 of=/dev/hdb1 bs=2M<br /> <br /> == Using tar to make a copy of the filesystem ==<br /> <br /> === Advantages ===<br /> <br /> === Disadvantages ===</div>

Bdeakin https://www.thinkwiki.org/w/index.php?title=How_to_copy_a_Linux_installation&diff=12733 2005-12-02T05:45:53Z

<p>Bdeakin: /* Advantages */</p> <hr /> <div>== Using dd to make a 1:1 copy ==<br /> <br /> === Advantages ===<br /> <br /> When dd is used to create the copy, it is copied at a sector by sector level. This means that in many circumstances, the new version will have it's boot sector set up and everthing. In situations where you are making a complete copy of the disk, even things like the IBM tools will be saved.<br /> <br /> === Disadvantages ===<br /> <br /> === Case 1: The Linux installation is on a separate Harddisk ===<br /> <br /> dd if=/dev/hd[a,b,c,..] of=/dev/hd[a,b,c,..] bs=2M<br /> <br /> Part of Sourcedrive : if=/dev/hd[a,b,c,..] the Letter &quot;a&quot; for the first Harddrive, b for the second, ....<br /> <br /> Part of Destinationdrive : of=/dev/hd[a,b,c,..] the Letter &quot;a&quot; for the first Harddrive, b for the second, ....<br /> <br /> === Case 2: The Linux installation is on a Partition ===<br /> <br /> (e.g. hda1 is the Partition with the Linux installation and hdb1 is the Destinationdrive)<br /> <br /> dd if=/dev/hda1 of=/dev/hdb1 bs=2M<br /> <br /> == Using tar to make a copy of the filesystem ==<br /> <br /> === Advantages ===<br /> <br /> === Disadvantages ===</div>

Bdeakin