This page (revision-24) was last changed on 2021-04-21 06:16 by Murray Altheim

This page was created on 2021-03-27 21:00 by Murray Altheim

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23 2021-04-21 06:14 12 KB Murray Altheim to previous | to last
22 2021-04-21 06:13 12 KB Murray Altheim to previous | to last
21 2021-04-17 03:16 11 KB Murray Altheim to previous | to last

Page References

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How To Backup An Sd Card
HowToBackupAnSdCard

Version management

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At line 22 changed one line
! Finding Your SD Card
! Find Your SD Card
At line 94 changed one line
! Find Your SD Card
! Find Your SD Card (Again)
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Using the instructions above with fdisk, locate your SD card.
Using the instructions [above|#section-HowToBackupAnSdCard-FindYourSDCard] with fdisk, locate your SD card.
In my case, it turns out that the new card mounted at {{/dev/sdd}}.
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So we delete any partitions on the SD card (we'll use "/dev/sdd" but you should substitute the mount point you found):
{{{
sudo fdisk /dev/sdd
}}}
This responds with a prompt, where you type "d":
{{{
Command (m for help): d
Selected partition 1
Partition 1 has been deleted.
}}}
If you have multiple partitions on the SD card you can select the partitions or simply repeat the command until the SD card has no more partitions.
At line 117 added 19 lines
Now check to see what your SD card looks like:
{{{
Disk /dev/sdd: 14.6 GiB, 15665725440 bytes, 30597120 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x334dade7
}}}
Now, to create a single FAT32 partition, type "n", selected "p" for primary, then accepted all the defaults:
{{{
Command (m for help): n
Partition type
p primary (0 primary, 0 extended, 4 free)
e extended (container for logical partitions)
Select (default p): p
Partition number (1-4, default 1): 1
First sector (2048-30597119, default 2048):
Last sector, +sectors or +size{K,M,G,T,P} (2048-30597119, default 30597119):
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Created a new partition 1 of type 'Linux' and of size 14.6 GiB.
}}}
Now we'll set the partition type to FAT32. The command is "t", and you can list all the available types with "L". The label for "W95 FAT32" is "b" so we'll respond with "b":
{{{
Hex code (type L to list all codes): b
Changed type of partition 'Linux' to 'W95 FAT32'.
}}}
Now, write the changes you've made to the SD card:
{{{
Command (m for help): w
The partition table has been altered.
Calling ioctl() to re-read partition table.
Syncing disks.
}}}
So, we've created a partition but it's not net formatted. So let's format our new partition using the {{mkfs.vfat}} according to the specifications you've configured:
{{{
sudo mkfs.vfat /dev/sdd1
}}}
You'll note we're using "sdd1" rather than "sdd" because we're formatting the first (and only) ''partition'', not the ''drive'' itself.
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! Copy the Raspberry Pi OS Image to the SD Card
Now that you've got a freshly-formatted SD card mounted (we'll assume here at {{/dev/sdd}} but may be different for you), we can restore our image file to that SD card using the {{dd}} command:
{{{
sudo dd if=/home/altheim/Desktop/rpi-backup-20210328.img of=/dev/sdd bs=4M status=progress
}}}
The awake among you will note that this reverses the {{if}} and {{of}} argument values from when we made the backup, since we're just reversing the process.
This page (revision-24) was last changed on 2021-04-21 06:16 by Murray AltheimTop