this post was submitted on 15 Mar 2024
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    Yeah yeah, we know you're special (lemmy.dbzer0.com)
    submitted 8 months ago by 0x4E4F@lemmy.dbzer0.com to c/linuxmemes@lemmy.world
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    [–] dan@upvote.au 175 points 8 months ago* (last edited 8 months ago) (32 children)

    and you shouldn't be using any of those, since the order can and will change. The numbers are based on the order the devices and device drivers are initialized in, not based on physical location in the system. The modern approach (assuming you're using udev) is to use the symlinks in /dev/disk/by-id/ or /dev/disk/by-uuid/ instead, since both are consistent across reboots (and by-id should be consistent across reinstalls, assuming the same partitioning scheme on the same physical drives)

    This is also why Ethernet devices now have names like enp0s3 - the numbers are based on physical location on the bus. The old eth0, eth1, etc. could swap positions between Linux upgrades (or even between reboots) since they were also just the order the drivers were initialized in.

    [–] JasonDJ@lemmy.zip 15 points 8 months ago* (last edited 8 months ago) (2 children)

    Back in my day, /dev/hda was the primary master, hdb was the primary slave, hdc was the secondary master and hdd was the secondary slave.

    Nothing ever changed between reboots. Primary/secondary depended on which port the ribbon cable connected to on the motherboard, and ~~primary/secondary~~ master/slave was configured by a jumper on the drive itself.

    [–] Phrodo_00@lemmy.world 5 points 8 months ago (1 children)

    Yeah, and ide only supported 4 drives at a time in most systems

    [–] pascal@lemm.ee 1 points 8 months ago* (last edited 8 months ago)

    If you had a Sound Blaster 16, you had an extra IDE port on the board, which DOS couldn't see and you had to load special drivers to use them. Usually it was used for the CD-ROM.

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