Re: Problem: non-SDHC 2GB SD cards are unreadable

!MAILaRCHIVE_VOTE_RePLACE
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: H. Peter Anvin <hpa@...>
Cc: Arnd Bergmann <arnd@...>, Alexia Death <alexiadeath@...>, <linux-kernel@...>
Date: Tuesday, April 15, 2008 - 7:23 pm

On Mon, 14 Apr 2008, H. Peter Anvin wrote:


The most easily available SD documentation is the SanDisk product manual 
(1.9) and the cards it documents only support 512-byte blocks ("The 
default block length is as specified in the CSD (512 bytes). A set block 
length of less than 512 bytes will cause a write error. The only valid set 
block length is 512 bytes. CMD16 is not manditory if the default is 
accepted.")

Somewhat unsurprisingly, not all manufacturers took into account the 
possibility that a card would use a different block size than what all of 
the cards of the time used.

	-Daniel
*This .sig left intentionally blank*
--
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
Problem: non-SDHC 2GB SD cards are unreadable, Alexia Death, (Sun Apr 13, 4:26 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Arnd Bergmann, (Sun Apr 13, 8:45 pm)
RE: Problem: non-SDHC 2GB SD cards are unreadable, Alexia Death, (Mon Apr 14, 2:08 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Wander Winkelhorst, (Mon Apr 14, 5:03 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Alexia Death, (Mon Apr 14, 12:49 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Lennart Sorensen, (Mon Apr 14, 12:11 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Arnd Bergmann, (Mon Apr 14, 2:48 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, H. Peter Anvin, (Mon Apr 14, 7:45 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Daniel Barkalow, (Tue Apr 15, 7:23 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, H. Peter Anvin, (Tue Apr 15, 10:09 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Roger Heflin, (Tue Apr 15, 10:49 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Arnd Bergmann, (Mon Apr 14, 8:40 am)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Alan Cox, (Sun Apr 13, 4:42 pm)
Re: Problem: non-SDHC 2GB SD cards are unreadable, Alexia Death, (Sun Apr 13, 5:32 pm)