micky wrote:
I have a slot for a little memory card (I can't remember what they are
called) in my laptop. a Dell Latittude E4300, running win7, and the
computer doesn't seem to know it's there.
Is there some way I disabled it?
I have one in the Acer Aspire running XP, and that always knew it was
there.
( DMESG dump from
http://natisbad.org/E4300/index.html )
SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter
https://www.e-devices.ricoh.co.jp/en...cif/pcc/5c821/
"It seems that my Ricoh R5C822 SD card reader supports SDHC (class 4) as well!"
SDSC (SD): 1 MB to 2 GB, some 4 GB were made
SDHC: 2 GB to 32 GB
SDXC: 32 GB to 2 TB
That suggests 32GB might be the largest SD you could plug in.
The Ricoh site didn't leave a datasheet for me to look at,
only the package outline document ("chip scale package" or CSP).
The bug trail here in Linux for the thing, probably is a matter
of not waiting long enough on a write. A delay_write failure
on Windows might be on the order of 5 seconds or longer. You
can get delay_write failures on older Windows, if the OS runs
out of some flavor of "pool".
https://bugs.launchpad.net/ubuntu/+s...ux/+bug/247819
Anyway, keep looking for a datasheet for the R5C822 to see
whether the SD really is an SDHC controller. I think the
best I have in the house here is SDHC, don't have an SDXC yet.
And the one SDHC I bought, is a 32GB one.
It's too bad the slot just didn't say underneath "32GB"
so we'd know.
Paul