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How to Flash an LSI HBA into IT Mode (with UEFI Shell v1 and Other Gotchas)

Homelab Storage TrueNAS
Flashing an LSI HBA to IT Mode in 2025: the Real-World, Hands-On Guide I Wish I’d Had > TL;DR: If your LSI/Avago/Broadcom SAS2308 (e.g., 9207-8i/9208-8i/9211-8i) card refuses to see drives or shows “0 B” ghosts, you probably need IT mode P20. The gotcha: the classic sas2flash.efi only works from a UEFI Shell v1, not v2—boot a TianoCore UEFI Shell v1 (link below) as \EFI\BOOT\BOOTX64.EFI and the flasher will finally run. Also, don’t trust passive VGA→HDMI “converters” during setup—use real VGA or an active adapter so you can see the shell. --- Why I ended up here (and why you might,...
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#lsi #hba #truenas +3 more

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