SD card boot?

Auric

Diamond Member
Oct 11, 1999
9,591
2
71
Is the ability to recognize an SD card like a USB flash drive the function of the BIOS or the adapter or both?

As you may surmise, the ones I have are not accessible from BIOS utilities nor bootable so would a diff'rent adapter allow it or be thwarted by a BIOS limitation anyway?

It's a current AMI BIOS for Intel 5 series and of course common USB flash drives are recognizable and bootable.

-
D'oh! It's a file system limitation. Must be FAT32 to even be readable by the BIOS, let alone DOS of course. S'pose I'd better start spanning backup images to ye olde timey file size limitation of 4095MB in case must read backup image from FAT32 rather than exFAT, NTFS, or UDF. :rolleyes:

Also, the SD card adapters are recognized by the BIOS as generic USB card reader whereas at least one USB flash drive is identified by a specific name so the CMOS configured boot order is not uniform but may be preempted via F12.
 
Last edited: