copy large file to USB drive hangs

[flahmeshess]

5.5V, 800mA

 

[flahmeshess]

The HDD is a SATA drive enclosed in a casing with a USB connection to
the PC. The Connection is a Y connector which is able to draw power
from 2 USB output.

 

[Sid Elbow]

The HDD is a SATA drive enclosed in a casing with a USB connection to
the PC. The Connection is a Y connector which is able to draw power
from 2 USB output.

I've been following this thread with interest although having nothing
much to add. However, a couple of peripheral observations:

- I've run a number of IDE-based USB drives. The only ones I've run
self-powered (from the USB connection) have been those containing small,
low-power laptop drives. All those containing full-size drives came with
an external power supply and recommended against using the USB bus for
power. I haven't experienced this problem with any of these.

- I recently came into possession of a (full-size) 250 GB SATA HD. Since
all my systems are IDE I bought a USB box to use this drive (again,
externally powered). It was singularly unsuccessful ... I was never even
able to completely format the drive no matter how I partitioned it.
Given my good experience of numerous IDE-USB setups, I formed a bad
opinion of SATA-USB (perhaps unfairly given the sample size - one).

 

[flahmeshess]

For this problem, I also encountered it with a 3.5 inch USB HDD which
is powered by the main. So I think it's a problem with either my OS
or the USB HW. But not relation to power supply nor SATA.

 

[flahmeshess]

Probably not due to power supply. Happens to my other 3.5 inch IDE
HDD power by main. I think it's the USB not able to handle the
throughput. If I find ways and means to slow it down, eg lower the
priority of the copy command when run in a cmd shell and at the same
time set it's affinity to 1 CPU instead of 2, then it takes longer for
this problem to happen and sometimes not happen.

I also once did a copy at the same time I do an ActiveSync, it
happened in just a few minutes.

So now, I'm trying to get a copy program (C or Java) that I can
control the buffer size and sleep in between. Then at least I can
copy overnight without hanging. But I loose the ability to check for
duplicate files, recurse through directories (trying to use the global
utility to solve this), etc.

 

[flahmeshess]

I've tried it on a MiniSD with adapter. Same problem.

 

[flahmeshess]

Hi ! Try to explore this again.

Does anyone know where I can get a copy file program that copies by
buffer rather than using the Windows function call ? Thanks.

ok. I didn't get any ? or !. Thanks.

From: "flahmeshess" <[email protected]>

| I downloaded the chipset software and installed it. Then I went to
| the device manager and changed all the USB drivers to Intel.
| Rebooted. Stillhang. I don't know if I've done the driver update
| correctly.
|

If it was done corerectly then there would be no yellow "!" or "?" [ exclamation or
question ] marks in Device Manager.

If the copy process is still problematic after that, then it isn't a driver issue.