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Path: ...!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!eternal-september.org!.POSTED!not-for-mail From: bp@www.zefox.net Newsgroups: comp.sys.raspberry-pi Subject: MicroSD-based USB boot manager for Pi? Date: Mon, 17 Mar 2025 15:18:24 -0000 (UTC) Organization: A noiseless patient Spider Lines: 23 Message-ID: <vr9eg0$d2sm$1@dont-email.me> Injection-Date: Mon, 17 Mar 2025 16:18:25 +0100 (CET) Injection-Info: dont-email.me; posting-host="c38e6d1cf346e3b7ce32977434df7707"; logging-data="428950"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX18j+WXlL66yZd4gNgMXSsMvTOZZl7nmFoI=" User-Agent: tin/2.6.4-20241224 ("Helmsdale") (FreeBSD/14.2-STABLE (arm64)) Cancel-Lock: sha1:EccTBdWKtP5pl6dKghxOkQol9o0= Bytes: 1742 Is there some sort of USB boot manager for Raspberry Pi versions that don't have an EEPROM? I'm thinking of armv7 Pi2 and early Pi3. Bootcode.bin on an otherwise blank msdos microsd partition works, but seemingly only with a single USB drive connected. A second USB disk left in place by mistake caused the machine to hang. Something installed on a microSD that finds and reports bootable USB drives, defaulting to the last one used, would be ideal. This video from about 2016 suggests it's already been done: https://www.youtube.com/watch?v=bNL1pd-rwCU But, no implementations turned up in a web search. All the boot manager references I found seemed to involve the Pi4. I'm interested in using older machines already on hand. As it happens, most of my machines run FreeBSD which uses u-boot as an intermediate step but I don't think that matters. Thanks for reading! bob prohaska