backing_up_the_sd_card_using_all_formats
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— | backing_up_the_sd_card_using_all_formats [2013/07/02 16:37] (current) – created wl7lp | ||
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+ | Since this has been needed from time to time, and we finally had K9DC and Doug as well as myself KF7QLH compile a list of instructions for 3 different platforms, I thought I would put them into one "easy to search for" message. | ||
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+ | This is how you make a BACKUP OF YOUR PiRLP node. Yes, A BACKUP. It is required. Just like cars, they need gas AND OIL. You need a running version of your SD card, and a BACKUP!!!! | ||
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+ | -Show the SD Card- | ||
+ | |||
+ | # dmesg | ||
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+ | # umount /dev/sdb1 | ||
+ | # umount /dev/sdb2 | ||
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+ | -Make an IMAGE backup of the entire card- | ||
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+ | # dd if=/dev/sdb of=/ | ||
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+ | This will take a while, because it's not just copying the files, it's actually taking an image of the entire SD card, which is 4 gigs of data... So be patient. | ||
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+ | Then, to reverse the operation to copy the image back onto your SD card... | ||
+ | # umount /dev/sdb1 | ||
+ | # umount /dev/sdb2 | ||
+ | |||
+ | # dd if=/ | ||
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+ | Be VERY VERY VERY careful you use the right command when doing a " | ||
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+ | If= The " | ||
+ | | ||
+ | ---- | ||
+ | | ||
+ | Using a windows system and card reader this is even easier - | ||
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+ | | ||
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+ | Take the card out of the Pi and insert it in the windows system reader/ | ||
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+ | Read the card and save the image. I use ' | ||
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+ | The image is then stored on the hard drive of the windows system. To copy it off | ||
+ | to another SD card just insert the card, select the image to write and write it. | ||
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+ | No formating, partitioning etc. is needed. The card can be in any state,. It is | ||
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+ | | ||
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+ | Also if you need to create a new install or reinstall from scratch you need to | ||
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+ | on how to do this. | ||
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+ | The downside of doing your own install is that you have to download and install | ||
+ | the extra stuff yourself - like the echo bridge and other scripts. | ||
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+ | Once you have a Pi system setup though you can clone it and hopefully never have | ||
+ | to do all that again. | ||
+ | |||
+ | |||
+ | ---- | ||
+ | | ||
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+ | It is also very easy on a Macintosh. Basically the same procedure as making a copy on Linux, although the commands, device names and directory structures are different. You will need to use the terminal program in the Applications/ | ||
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+ | Insert the SD card into the memory slot (all recent Macs have an SD slot). | ||
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+ | To determine what the SD card is called, use the command below... | ||
+ | [If you only have a single drive in your Mac, it will probably be disk1. | ||
+ | If the SD card is something else, use that number in all the examples below] | ||
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+ | | ||
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+ | | ||
+ | / | ||
+ | #: TYPE NAME SIZE IDENTIFIER | ||
+ | 0: GUID_partition_scheme *751.3 GB disk0 | ||
+ | 1: EFI EFI 209.7 MB disk0s1 | ||
+ | 2: Apple_HFS Macintosh HD 749.1 GB disk0s2 | ||
+ | 3: Apple_Boot Recovery HD 1.8 GB disk0s3 | ||
+ | / | ||
+ | #: TYPE NAME SIZE IDENTIFIER | ||
+ | 0: FDisk_partition_scheme *4.0 GB disk1 | ||
+ | 1: Windows_FAT_32 58.7 MB disk1s1 | ||
+ | 2: Linux 3.8 GB disk1s2 | ||
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+ | Obviously, the SD card is called " | ||
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+ | |||
+ | The partitions must be unmounted. Use the command... | ||
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+ | | ||
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+ | To make a copy of the SD card to your local drive... | ||
+ | | ||
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+ | dd if=/ | ||
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+ | Replace the SD card with a new one. The command to copy the file to a new SD... | ||
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+ | | ||
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+ | dd if=/ | ||
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+ | As with Linux, it can take some time for the copy to complete, like 60-80 minutes. The speed is on the order of 1 MB/sec. You do the math. | ||
+ | |||
+ | Pop the backup SD in your Pi, and power it up. Plus, you now also have a copy in your Mac home directory should you need it again. | ||
backing_up_the_sd_card_using_all_formats.txt · Last modified: 2013/07/02 16:37 by wl7lp