On Monday 28 July 2003 11:31, Jussi Jaaskelainen wrote:
> My problems is that I bought external USB 2.0 3.5" HD case and Maxtor
> 160GB HD. Linux can see only 137GB of HD space.

Perhaps somebody is hitting the 137GB limit of an older ATA(-5?)
specification.  See:
http://www.win.tue.nl/~aeb/linux/Large-Disk-3.html#ss3.5

> Case maker says that E-IDE <=> USB 2.0 converter chip support big HDs

Yes, but how big? :-)
Please confirm the HD case specification.

A few other ideas to check.  Your USB HDD should appear as a SCSI drive in
Linux.  After you plug the drive in, try doing a dmesg, which should display
some kernel log messages.  Near the end of the list, your USB HDD should be
listed.  How any sectors are reported for your USB HDD?

To investigate in more detail, enable debugging in the USB storage driver;
recompile and install the driver module; reboot or reload the USB storage
driver module; plug in your USB HDD; examine the kernel log for READ
CAPACITY commands.  How many blocks were reported by your USB HDD?

With USB Storage driver debugging enabled, try reading a block in the
138-160GB range (using dd?).  What is the result?  What READ10 command
appears in the kernel log (does it contain the address of the block you
want)?

Best regards,
jimb.



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