BIOS does not see microSD, what should I do?


New Member
BIOS does not see microSD, what should I do?
оs debian9.

MicroSD and card reader works - appears on the desktop,
and in the bios on another device.
how to fix ?


Staff member
Gold Supporter
Why do you want the BIOS to see the MicroSD? Do you want to boot from it?

If it's in a card reader you might try booting from USB.

What is the output from


New Member
I want the BIOS to see microSD
and he's in a card reader,
but the bios does not see.

$ lsusb
^[[2~Bus 001 Device 004: ID 04f2:b452 Chicony Electronics Co., Ltd
Bus 001 Device 006: ID 046d:c050 Logitech, Inc. RX 250 Optical Mouse
Bus 001 Device 005: ID 04ca:300b Lite-On Technology Corp. Atheros AR3012 Bluetooth
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 002: ID 8087:07e6 Intel Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


Are you attempting to boot Linux fom the SD card? I tried that and learnt that my laptop's bios didn't support that, so if you're trying to do the same it might as well be your case too. What's the output of
lspci -v
you should look for something like
08:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI Express Card Reader (rev 01)
    Subsystem: Hewlett-Packard Company Device 188b
    Flags: bus master, fast devsel, latency 0, IRQ 26
    Memory at 90100000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: <access denied>
    Kernel driver in use: rtsx_pci
    Kernel modules: rtsx_pci

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