copying one flash drive to another

I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.

On 02/07/2014 00:35, wrote:
I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.



It would probably have been quicker to copy the first stick to your C
drive, add the new stuff to that lot, then copy to the new stick. That's
how I normally do it. I've never tried it your way.

jim

On 7/1/2014 7:35 PM, wrote:
I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.

"Adjacent USB 2 Ports" will slow things down.
Far faster to copy to an internal SSD or HD,
then to the second USB device. It's also possible that the two ports are
on the same USB controller, possibly making things even slower.

On 7/1/2014 4:35 PM, wrote:
I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.


I archive the software that install on my PC onto a flash drive. My old
4 GB flash drive was nearly full. I bought a 16 GB flash drive, plugged
both into my PC, and copied the old one to the new one. It took a few
minutes.

--
David E. Ross

The Crimea is Putin's Sudetenland.
The Ukraine will be Putin's Czechoslovakia.
See http://www.rossde.com/editorials/edtl_PutinUkraine.html.

wrote:
I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.

Cool.

That is roughly achievable with USB 1.1 rates, or around 1MB/sec.

You can use HDTune from hdtune.com to benchmark the sticks and
measure the transfer rate possible.

http://www.hdtune.com/files/hdtune_255.exe

A BIOS setting switched off ?

It's not likely to be a driver problem, but check
Device Manager for any "yellow marks".

Paul

On Tue, 01 Jul 2014 19:35:57 -0400, wrote:

I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.

Thanks. If I have to do it again, I'll copy to the hard drive first then back
to a flash drive. Makes sense.

In message , jbm writes:
[]
It would probably have been quicker to copy the first stick to your C
drive, add the new stuff to that lot, then copy to the new stick.
[]
And so say a lot of people in this thread. But, apart from the
possibility that both are on the same USB controller someone mentioned,
no-one has suggested _why_.
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Under democracy one party always devotes its chief energies to trying to prove
that the other party is unfit to rule - and both commonly succeed, and are
right. -H.L. Mencken, writer, editor, and critic (1880-1956)

J. P. Gilliver (John) wrote:
In message , jbm writes:
[]
It would probably have been quicker to copy the first stick to your C
drive, add the new stuff to that lot, then copy to the new stick.
[]
And so say a lot of people in this thread. But, apart from the
possibility that both are on the same USB controller someone mentioned,
no-one has suggested _why_.

If the usable thruput of a shared USB2 controller
is 30-35MB/sec, if we do from-to copying we give
half to each. So 15-17MB/sec would be the observed
transfer rate.

The OP reports a rate below 1MB/sec. So that explanation
is not it.

Flash has "zero seek time", as there is no head to
move about. On USB, the access time is around 1 millisecond,
due to USB protocol. Maybe, if you had a lot of tiny files,
it would slow down. But, would it drop to 0.8MB/sec ? That
sounds a little low, even for the "tiny file" test case.
Maybe it would take something really gross - such as
conversion from FAT32 to NTFS using "convert", on an
OS that uses a 512 byte cluster size or something.
(I.e. A really bad file system choice, coupled with
small files.)

I suppose the OP could stage a 1GB file on the
test USB key again. Then transfer it across from
the 8GB stick to the 16GB stick. As a means of
testing the "small file versus large file" hypothesis.

Paul

On Tue, 01 Jul 2014 19:35:57 -0400, wrote:

I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.


Dunno why it took so long, but why so many files ? I usually
put a dozen or so files on my USB (assuming films) and when I've
watched them, delete. And two hundred high quality MP3s is usually
under 2Gb, assuming music. Would run for at least 12 hours.
I keep copies on the HD. Just in case the TV fscks them up on
the USB. Sometimes happens on a power outage.
[]'s
--
Don't be evil - Google 2004
We have a new policy - Google 2012

In article , rfdjr1
@optonline.net says...

I'm running Windows 7 Pro 64bit, with 12Gb RAM and an Intel i7 930 processor.

Over the past few days I built a huge playlist on a Sandisk Cruzer 8Gb
flashdrive to leave plugged into my TV which plays media from a USB device. It
worked just fine except I ran out of room on the 8Gb drive so I got a 16Gb so I
could add more music and possibly some video.

Today, I plugged both of them into my system, side by side on adjacent USB 2
ports to copy all the files from the 8 to the 16Gb. It seems to have worked fine
but it took 2-1/2 hours. The amount of data on the 8Gb was just a little less
than 7Gb, and around 1,700 files.

My question is, should it have taken so long to copy from one flash drive to the
other? It seems like an awful long time. I just want to be sure I don't have a
system problem.

Thanks.

To give you some idea ... When I had to copy 700+Gb of music between two
usb external drives (one started having SMART errors) it took 16 hours
and I wasn't surprised. On a typical 1..20 Gb copy I get 10-15Mbs.

Normally large files copy much faster. This is probably due to slow
directory manipulation on the USB drive. Also the sending app has to
stage many small files and that takes time. The system reads files in
chunks for them to processes. That chunk size is totally up to the
copying app. Even Windows seems to regulate that. Haven't you notices
that sometime disk to disk copies are slow or fast depending on what
windows wants to do with other things it is processing. How do I know,
I have written many copy apps and see what I do in my code vs what
windows does and can do.
I can control the chunk size and normally do that to make sure that if
Windows is passed a large chunk that it does not come back to my code
for too long making my app seems unresponsive. i.e. it is out of my
controls unless I dish out small chucks for windows to deal with.

I have an app that can copy and report copy speed and it is always
much faster for large files. USB3 pen drives on Win 7 PC USB3 ports
are much faster. So now that is what I mostly do.



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