scsi_partsize(9)

✨ NAME ✨

scsi_partsize — the function that parses cylinders/heads/sectors out of a PC partition table, no cap 💅

Hey bestie! You’ve landed on the scsi_partsize(9) page from the Kernel API Manual, and we are about to get into partition-table geometry. It’s giving iconic kernel internals, honestly. 🫶

🌸 SYNOPSIS 🌸

bool scsi_partsize (struct gendisk *disk , sector_t capacity , int geom[3] );

🎀 ARGUMENTS 🎀

• disk — the gendisk of the disk you’re parsing. Like, which disk are we doing this to? That one. 💖
• capacity — the size of the disk, in sectors. Sectors, bestie, not vibes.
• geom — the output, in the form [hds, cylinders, sectors]. So you get hds, cylinders, and sectors handed back in one little array. Obsessed. 🦋

🦋 DESCRIPTION 🦋

This is the part where it figures out the BIOS mapping/geometry that was used to create the partition table, then drops those results into geom. That’s the whole assignment, and it ate. 🔥

🌈 RETURN 🌈

• false on failure 😭
• true on success 👑

🧚 SEE ALSO 🧚

• The kernel file ./drivers/scsi/scsicam.c
• scsi_bios_ptable(9)
• scsicam_bios_param(9)

Go check those out if you want the rest of the scsicam lore, iykyk. 💜

xoxo, your kernel bestie 💖 — this one comes from ./drivers/scsi, dated October 2026, and yes it’s the scsi_partsize(9) page. Periodt. 🎀