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Old January 21st 08, 04:17 PM posted to comp.arch.storage
Cydrome Leader
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Posts: 113
Default Utility to write huge files instantly???

mike wrote:
Cydrome Leader wrote:
Bill Todd wrote:
Cydrome Leader wrote:
mike wrote:
Cydrome Leader wrote:
mike wrote:
Windows 2000, FAT32 or NTFS.
For testing,
I want a utility to create BIG files ~1GB on storage media
quickly.

Copying a big file is not an option, too slow.

I don't care what's in the file as long
as the OS is happy that it's a "valid" file.
Needs to work thru normal OS drive letters and drivers.

Should be able to just write the FAT without doing anything to the
actual allocation units being allocated???

Anything like this exist?
Thanks, mike
There are ports of the "dd" unix program for windows. It can be used to
write giant files with minimal effort.
Thanks, but minimal effort is not nearly as important as minimal time.
The version of dd I tried does work,

dd if=infile of=outfile seek=2000000
if is 200bytes.
set a larger block size, bs=65536 etc. The default 512 byte blocks are
slow.
That's clearly not what he wants.


What he really want is an instant free answer to some strange problem.


EXACTLY!! That's what the internet is for, gain from the experience of
others, not reinvent the wheel, etc. I had no idea this would be a
difficult problem for a real programmer experienced with storage
architecture.


You might want to remember real programmers and storage people work on
real problems and real data, not nonsense.

I'd love to hear why one needs 16GB files that lack any real data stored
across USB 1.1

Not at liberty to say exactly why. Just need to fill space quickly.
USB (1.1 or 2.0 they're both too slow) is exactly the reason I can't
wait for the files to be filled up with data...garbage is fine...I'm
never gonna read it anyway. Just need the OS to think there's a valid
file there.

mike


Well, I had an answer for the problem, but it's too secret to talk about.