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@JdeBP@mastodonapp.uk

2026-09-26 05:57 UTC

@jaypatelani@bsd.network I don't want to spoil the #retrocomputing fun, but for those new to the BSDs who do not have the context and might come away thinking that they should move from GUID partitioning, or even MBR-style partitioning with LBAs, to disk labels: The "BSD disklabel" is a partitioning scheme from 1988 that can destroy your GUID partitioning or boot loader if accidentally mis-used. #NetBSD, #OpenBSD, and #FreeBSD haven't agreed on disklabel partition types since IBM's JFS2. They don't agree on what the types for ZFS or HAMMER2 partitions are, for example. It is 32-bit, occasionally 16-bit, in some fields, and mostly has the old 2TiB size limits that the GUID system overcame with 64-bit addressing at the turn of this century. And the on-disk data structures are no longer even compatible as of OpenBSD discontinuing 'v0' in 2025 (with a somewhat optimistic note in the version control history that no-one has written that to disc since 2007). #disklabel #bsdlabel

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