Eee PC and SDHC access

["Joel CARNAT" <joel%carnat.net@localhost>]

Hello,

I gave my Eee PC 701 a (Transcend) SDHC (Class 6, 16Go) card.
If I plug it into the "native" card reader, I can copy small files
(pictures and audio MP3 ripped files) but not big ones (ripped DVD
movies).
If I use the USB adapter (sold with my SDHC), then everything transfers OK.

SDHC in the USB adapter, I get:
umass0 at uhub4 port 3 configuration 1 interface 0
umass0: Generic Mass Storage Device, rev 2.00/1.05, addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 1 lun per target
sd0 at scsibus0 target 0 lun 0: <Single, Flash Reader, 1.00> disk removable
sd0: fabricating a geometry
sd0: 15326 MB, 15326 cyl, 64 head, 32 sec, 512 bytes/sect x 31388672 sectors
sd0: fabricating a geometry

SDHC in the internal card reader, I get:
umass0 at uhub4 port 5 configuration 1 interface 0
umass0: ENE UB6225, rev 2.00/1.00, addr 2
umass0: using SCSI over Bulk-Only
scsibus0 at umass0: 2 targets, 1 lun per target
sd0 at scsibus0 target 0 lun 0: <USB2.0, CardReader SD0, 0100> disk removable
sd0: fabricating a geometry
sd0: 15326 MB, 15326 cyl, 64 head, 32 sec, 512 bytes/sect x 31388672 sectors
sd0: fabricating a geometry

I'm running NetBSD 4.99.58/i386.

When the files were copied via the USB adapter, I can plug the SDHC card
back to the internal card reader and read the entire files w/o any
problem.

Any idea ?
TIA,
    Jo