sync is the next line, after dd finishes (an implicit <CR>,,return at the end of each line)
if you want to stack commands together, separate them with ";",, ie command1; command2; command3
a bit risky if you are not sure if they may not complete without error
dd will completely overwrite mmcblk2 (in this case, up to the length of the input file)
I'm not sure if I understand right, this set of commands run from booted SD
i thought you said you had a SD boot and NOT a emmc boot?
spaces around "pipe",,, "|" are only for clarity
xzcat is same as cat, just for xz archives,, decompresses and output to terminal (standard output),,
| redirects to dd which uses it as input
if you want to stack commands together, separate them with ";",, ie command1; command2; command3
a bit risky if you are not sure if they may not complete without error
dd will completely overwrite mmcblk2 (in this case, up to the length of the input file)
I'm not sure if I understand right, this set of commands run from booted SD
i thought you said you had a SD boot and NOT a emmc boot?
spaces around "pipe",,, "|" are only for clarity
xzcat is same as cat, just for xz archives,, decompresses and output to terminal (standard output),,
| redirects to dd which uses it as input