Hi,

first copied files from mmc card , original 64 MB to PC
than back to installed 2GB card.
To copy all files from 64MB to PC it took about 2 minutes
to copy back from PC to 2GB it took about 10 minutes.
What's wrong.
My 2GB mmc (rs) card comes from Kingston, dual-voltage.
I have no idea who has manufactured the original 64MB card delivered by Nokia but 2 m in vs. 10 min. makes great difference.
Does it mean Kingdston memory cards are really so slow ?

Darius

The read and write times on the card is different. Check this easy by doing the same task you did but with the same card. Write a medium/big file from the PC to the 2GB card and then transfer it back to the PC..

I have both a Kingston and a Nokia 1GB RS-MMC card. Both are roughly the same speed (anecdotally; I haven't benchmarked). Writing is always much slower than reading.

I now also have the Kingston 2 GB card. Some operations are slow...

But i'm also having a problem where Linux (Ubuntu or Knoppix) will dismount - as if the plug were pulled. Three different hosts. I've experimented with keeping the cable stationary, etc., and have not found a reliable procedure. After a copy and sync, i do a 'diff -R' to see if everything got there. Often it hasn't.

Also, fat32 (if that's what it is) consumes huge amounts of space. Approx 32 MB of stuff on the 64 MB card expands to over 128 MB on the 2 GB card.

What I'd really like is ext3 - an ext2 Linux filesystem with journalling. That's a filesystem that would be resistant to damage. My hosts are generally all Linux, and could mount it. But what has to happen on the Nokia to make this work? Some gainroot and fstab magic? Or something else too? Another thing i'd like is to be able to install apps on the large external chip... My internal FS is full, more or less.

I'm also thinking of setting up swap...

On the topic of backup, does anyone have instructions for full backup/restore?

One expects that a full restore would start by reflashing. Then what? Would a simple tar or cpio backup from / work, or at least work filesystem by filesystem?

I've done a reflash. I might attempt a backup, then reflash and restore...

OK, so now i've tried sending lots of data from Windows. It hangs and fails there too. I've also tried using an SD interface device, with similar results.

Is my 2 GB card bad? Or are other people having this problem.

As near as I can tell, 2 GB is available only from Kingston.