F
flahmeshess
5.5V, 800mA
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F
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.
the PC. The Connection is a Y connector which is able to draw power
from 2 USB output.
S
Sid Elbow
flahmeshess said: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).
F
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.
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.
F
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.
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.
F
flahmeshess
I've tried it on a MiniSD with adapter. Same problem.
F
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.
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.