SD card not detected after automatic update
So I've been refreshing old iMacs. This particular mid 2011 27” was working fine including the SD card, after installing HS I turned on auto updates and let it do its thing.
Previously the mac had Lion.
During the updates I got the one long solid beep which i believe is the boot rom EFI firmware being updated.
After that the mac restarted and now the SD card reader is not present under system profiler.
Looking at the SD card reader the led is blinking rapidly, I swapped it into another 2011 and the card reader works perfectly and gives a solid green led.
Tried 3 working SD card readers but all of them exhibit the same quick flashing led.
All the usual trouble shooting makes no difference, nvram, smc reset, battery replacement and full reformat including deletion of the EFI partition but alas nothing has resolved the issues.
I guess I will have to include a USB card reader in the sale of this imac which sucks as it already has 1 dead USB port.
If anyone has had this same fault and successfully fixed it I would like to know.
Cheers.
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Install SD card drivers.
by Steven Tillson