Re: easy project? apple scsi hd on a card ie..scsi expander

[Sheldon Simms <sheldonsimms@yahoo.com>]

On Tue, 10 Feb 2004 22:07:16 -0500, Bill Garber wrote:

> Sandisk claims that their CF cards do that automatically and
> rewrite the data on the sectors reaching their limit to new
> sectors marking the old ones as bad,

If that's true, then it's nice, but doesn't really solve the
problem.

> and that is only after more than 10,000 writes. Which means
> you'd have to write the sector nearly 30 times per day for
> more than a year.

It's true that most sectors wouldn't be written that often, but
in ProDOS, almost any change anywhere on the disk results in
writes to the volume bitmap sectors and the beginning of the
"disk". Just a few file operations can write the bitmap sectors
many times.

What would be nice for flash "disks" would be a hacked ProDOS
that tries to spread out the bitmap on the "disk" so that no
single sector is written repeatedly.