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Forum Index : Microcontroller and PC projects : Enquiry regarding: "maximum file/path length is 63 characters".(RP234)

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Fede
Newbie

Joined: 09/03/2026
Location: Spain
Posts: 10

Posted: 07:06am 02 Apr 2026

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Hello.

As I mentioned, I’m developing a file manager and I’m having trouble handling files whose path or filename is longer than 63 characters.

Is there any way I can copy them?

When I try to do so, I get that error for files whose path and filename together exceed 63 characters, and I’m not sure what to do.

Thank you.

phil99

Guru

Joined: 11/02/2018
Location: Australia
Posts: 3104

Posted: 07:41am 02 Apr 2026

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An experiment to try, don't know if it will work.

Before copying change the working directory to the one containing the file (maybe CHDIR twice if its a very long path) and copy from there.

If the destination path is also very long you may need to copy to a short directory path first then CHDIR to the long destination path and copy again.

Fede
Newbie

Joined: 09/03/2026
Location: Spain
Posts: 10

Posted: 01:28pm 02 Apr 2026

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Thank you very much for the suggestion. It’s certainly tempting.

For now, I’ve switched to RP2350, which, with its 127 characters, should be enough.

Best regards.

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