An SD card backup device is also important since it helps free up space on your SD card if it's almost full. You may also delete files stored on your SD card by accident.Ī backup device, therefore, becomes handy in such situations since you won't have to worry much about lost data. Keeping backups assures you that you'll still access your documents, music, videos, pictures, etc., when your SD card becomes corrupted or damaged. The first reason you may want to use an SD card backup device is for the security of your data in the event of data loss. If you are using an adapter like me, it should be a Mass Storage Device with the size of your SD-card, when you go and select drive. Secure Download Why Do You Need an SD Card Backup Device 's those 3 steps, as pictured on the website. DD has no failsafes so I would suggest Balena Etcher, so you don't overwrite your OS or anything. You can also use DD but of course reversed. To image it back to an SD-card, use something like Balena Etcher. Copy it to a couple places so you'll always have it. You can also do this graphically, as in the guide. So don't think you have to have Gnome installed or running. If you open the utility via Start-menu, it will be called 'Disks'. If you are on Manjaro like me (or any Arch-derivative I imagine): Here is a guide how to automount your NTFS-partitions: any partition/device really. Sdf is the specific device, in this case my USB-adapter. It's 1 command: sudo dd bs=4M if=/dev/sdf of=/home//rpi.img You never know when you have to wipe OSes or partitions or the drive just fails. Always save a backup in more than 1 place. In case you want to move the backup to your Windows partitions. It's also easy to mount/automount your NTFS partitions if you want. 'sudo blkid', 'sudo lsblk', 'sudo fdisk -l'.Īnother, graphical way, is using Gnome-disk-utility. You might need 'sudo' before the command. To find out which device it is on your system, run lsblk, blkid or similar in terminal. I make backup image in Linux because why wouldn't I have Linux installed. Plug it into adapter and plug adapter to PC. Shutdown your RPI, take out the microSD-card. I use an adapter for this: one of these from any shop. It’s in the System Tools section of the start menu. Launch gparted from within the Raspberry Pi OS GUI. Boot your Raspberry Pi off a different microSD card.ģ. Put your source microSD card (the one you want to copy) in a reader and connect to your Raspberry Pi.Ģ. To do the shrinking, you’ll need a USB microSD card reader and a second microSD card with Raspberry Pi OS on it.ġ. Then you can copy just your partitions over to the USB drive. So the solution is to shrink the rootfs partition of your microSD card down to a size that’s just a little bit bigger than the amount of used space. If you don’t shrink the rootfs partition, you will end up copying all 64GB over to your external drive, which will take a lot more time to complete and will require that you have at least 65GB of free space. What’s particularly frustrating is that, by default, the dd file copy process makes an image out of ALL the space on your microSD card, even the unused space.For example, you might have a 64GB microSD card, but only be actually using 6GB of space. img.gz file you create in the tutorial above should be much smaller than your source card, you still need enough space to accommodate the uncompressed. If you want to make a disk image of a microSD card, but don’t have an external USB drive of a greater capacity, you have a problem. How to Shrink a Partition on Raspberry Pi You can copy this file to your PC, upload it to the cloud or send it to a friend. This process will also take several minutes but, when it is done, you will end up with a reasonably sized image file called. sudo dd if=/dev/mmcblk0 of=/myimg.img bs=1M count=7000 The amount of data is equal to count * block size (bs) so 7000 * 1M means 7GB. So, to be on the safe side (better to copy too much data than too little), we rounded up and set dd to copy 7GB of data by using count=7000. For example, in our case, we had had a 16GB card, but after shrinking the rootfs down to 6.5GB, the card only had about 6.8GB in use (when you count the /boot partition). However, if you shrank a partition on the source microSD card, you’ll need to use the count attribute to tell it to copy only as many MBs as are in use. sudo dd if=/dev/mmcblk0 of=/myimg.img bs=1M Copy all your data to an img file by using the dd command. However, you can’t and shouldn’t do that if it’s already mounted.ĥ. If your drive isn’t mounted, try rebooting with the USB drive connected or you can mount it manually by typing sudo mkdir /dev/mysub to create a directory and sudo mount /dev/sda1 /dev/myusb to mount it. Your USB drive will probably be mounted at /media/pi/. You’ll see a list of drives connected to the Raspberry Pi and the mount point name of each.
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