armv6j cross-compile/chroot register arm executables interpr

[something-something-horri]

[Moved from Installing Gentoo to Duplicate Threads, since the poster cross-posted the same request to the ARM-specific subforum.

OP: next time, if you post in the wrong section, report your own post and request that it be moved. Do not cross-post. That makes it harder for people to keep track of the advice you receive. -Hu]

I'm trying to chroot into a sd card to cross compile for my raspberry pi zero. I'm stuck on this part

Once done it is necessary to register ARM executables interpretatior in running kernel:

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root # echo ':arm:M::\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff:/usr/bin/qemu-arm:' > /proc/sys/fs/binfmt_misc/register

returns

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bash: echo: write error: Invalid argument

chmoding doesn't seem to work, I don't know what to do.