IMX8/iMX8MEVK/Yocto/Installing an Image: Difference between revisions
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In old Yocto versions, the most common image type was sdcard, use '''dd''' with this image type. | In old Yocto versions, the most common image type was sdcard, use '''dd''' with this image type. | ||
< | <syntaxhighlight lang=bash> | ||
IMAGE=sdcard.img | IMAGE=sdcard.img | ||
DEVICE=/dev/sdb # The device may change in your system | DEVICE=/dev/sdb # The device may change in your system | ||
sudo dd if=$IMAGE of=$DEVICE bs=4M && sync | sudo dd if=$IMAGE of=$DEVICE bs=4M && sync | ||
</ | </syntaxhighlight> | ||
Recent Yocto versions have '''wic''' image type as default format, use bmaptool as follows: | Recent Yocto versions have '''wic''' image type as default format, use bmaptool as follows: | ||
Revision as of 20:11, 9 November 2018
In order to install an image, you must identify your device ID.
Check it as follows:
blkid -o list
This is an output example:
user@laptop:~$ blkid -o list device fs_type label mount point UUID -------------------------------------------------------------------------------------------------------------------------------- /dev/sda1 ext4 / 819c76f8-187f-46e9-b0c0-350032625bb3 /dev/sda3 ext4 data /media/user/data 571e7aea-202e-4daa-8071-a1fc1207f458 /dev/sda5 swap [SWAP] 4018cfb5-4201-4656-a005-4fe04d06dde1 /dev/sdb1 ext4 sdcard (not mounted) fe2353ea-7436-457e-9447-8e3f721b0c43 /dev/sdb2
Considerations
Each device has numbers at the end, those numbers are related to partitions and they must not be specified to install the image. As example, instead of /dev/sdb1, use /dev/sdb.
Also, the device must be not mounted to successfully write the image.
Installing
Yocto supports several image formats, as example ext4, img, sdcard and wic.
Those files will be created in <Yocto_Dir>/build/tmp/deploy/images/imx8mevk.
In old Yocto versions, the most common image type was sdcard, use dd with this image type.
IMAGE=sdcard.img DEVICE=/dev/sdb # The device may change in your system sudo dd if=$IMAGE of=$DEVICE bs=4M && sync
Recent Yocto versions have wic image type as default format, use bmaptool as follows:
sudo bmaptool copy <image.wic> /dev/<device> --nobmap