Subject: Re: "LEXR" USB storage device
To: None <firstname.lastname@example.org>
From: Wolfgang S. Rupprecht <wolfgang+gnus20030517T123625@wsrcc.com>
Date: 05/17/2003 12:55:12
> umass0: LEXR PLUG DRIVE LEXR PLUG DRIVE, rev 1.10/0.01, addr 2
> rnd: sd1 attached as an entropy source (collecting)
What is being used as the entropy source? The data read or the
> BTW, the device is labeled "64 MB", but 62976 KB is only 61.5 MB (where
> 1 MB = 1024*1024 bytes). I assume this is due to memory manufacturers
> starting to tell the same lies that disk manufacturers tell.
Probably the underlying chips really present 64MB but the missing
section is for spares, sector tables and on-card firmware.
Either the lexar or sandisk web mentioned a level of sector remapping
done by the on-card controller. The purpose was to map out bad
sectors and to move sectors around on a per-write basis so that
hot-spots didn't wear out one sector while most other sectors were
still fairly underutilized.
Wolfgang S. Rupprecht http://www.wsrcc.com/wolfgang/