Difference between revisions of "Flashing Linux to SD Card"
Jump to navigation
Jump to search
| (2 intermediate revisions by the same user not shown) | |||
| Line 7: | Line 7: | ||
The following clears the start and the end of an SD Card (or any block device in general). | The following clears the start and the end of an SD Card (or any block device in general). | ||
| − | < | + | <pre> |
SD_CARD_DEVICE=/dev/sdX | SD_CARD_DEVICE=/dev/sdX | ||
sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 count=1024 | sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 count=1024 | ||
sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 seek=$(( $(blockdev --getsz $SD_CARD_DEVICE) - 1024 )) count=1024 | sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 seek=$(( $(blockdev --getsz $SD_CARD_DEVICE) - 1024 )) count=1024 | ||
| − | </ | + | </pre> |
| + | |||
| + | === Resizing an SD Card === | ||
| + | After flashing the image you might wish to resize your filesystem to use all of your eMMC or SD-card. | ||
| + | |||
| + | Open cfdisk to change the partition size: | ||
| + | {{codeblock|1=sudo cfdisk /dev/mmcblkX}} | ||
| + | |||
| + | Select [Resize] and resize your partition to maximum. The select [Write] and accecpt with "yes". Select [Quit] to exit. | ||
| + | |||
| + | Clean the filesystem: | ||
| + | {{codeblock|1=sudo e2fsck -fy /dev/mmblkXpX}} | ||
| + | |||
| + | Finally resize your partition: | ||
| + | {{codeblock|1=sudo resize2fs /dev/mmblkXpX}} | ||
| + | |||
| + | Source: [https://gitlab.com/mobian1/wiki/-/wikis/Install] | ||
Latest revision as of 20:54, 21 May 2020
How to flash Linux onto an SD Card?
dd if=file.img of=/dev/sdx bs=4M status=progress
where /dev/sdx is the SD Card block device (NOT a partition, the whole thing!).
Clearing an SD Card
The following clears the start and the end of an SD Card (or any block device in general).
SD_CARD_DEVICE=/dev/sdX sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 count=1024 sudo dd if=/dev/zero of=$SD_CARD_DEVICE bs=512 seek=$(( $(blockdev --getsz $SD_CARD_DEVICE) - 1024 )) count=1024
Resizing an SD Card
After flashing the image you might wish to resize your filesystem to use all of your eMMC or SD-card.
Open cfdisk to change the partition size:
sudo cfdisk /dev/mmcblkX
Select [Resize] and resize your partition to maximum. The select [Write] and accecpt with "yes". Select [Quit] to exit.
Clean the filesystem:
sudo e2fsck -fy /dev/mmblkXpX
Finally resize your partition:
sudo resize2fs /dev/mmblkXpX
Source: [1]
