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LaCie 320GB BigDisk not visible in Win. explorer

Posted on 2004-10-20
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Last Modified: 2008-05-29
I recently purchased a LaCie 320GB BigDisk triple interface for use with winXP. Was able to create a partition and format as NTFS with no problem. Assigned it as N:. I can see it and explore it from the Disk Manager but if I click on 'my computer' or start Windows explorer the drive is not listed. I discovered that it is listed under 'my network places'.

Does anyone have a suggestion about how to get the drive to appear as just another hard disk? I also have a Maxtor 120GB USB drive and it is shown correctly as drive M: so my computer can recognize USB drives.

I would appreciate any suggestions. I can access the drive by exploring starting with the Disk Manager but that is not very convenient for routine use.

Thanks,

Jim
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Question by:fjrohlf
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by:DABOMB
ID: 12374404
Are you using the FireWire 800, 400 or the USB 2.0 interface? Not that it should matter. When you installed the disk, did you install any software with it, or is it going strictly mass storage?

-D
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Author Comment

by:fjrohlf
ID: 12375973
I have both firewire 400 and usb 2. I am using usb 2 because it is supposed to be a bit faster.  No software came with it so I am just using it as a standard winXP mass storage device.

Jim
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DABOMB earned 250 total points
ID: 12377018
Ah, ok, that is really strange that it would show up there, I've never seen that in my 5 years of where I am. (I help design and support products almost identical to what you are using, although I have nothing to do with Lacie other than our factory makes some of their products.)
 It's a strange problem, I'll poke around and see what the other engineer thinks as well. Sorry I cant be more help.

One note on the 400 vs 480 (1394 vs USB 2.0) the best thing about USB is that everyone has some version of usb usually unless you are dealing with ancient systems.

 Not everyone has FireWire. But if you do I suggest you use the FireWire. Although the numbers may appear faster USB is a polled interface and with that creates a huge resource hog. The overhead is much bigger, and since it has to poll every device on the bus at a device specified interval it can really slow the system down.

FireWire is similar to an interrupt driven system, less overhead, therefore in essence faster. My countless benchmarks have always shown this to be true.

Depending on the USB host you can slow down as well. I've seen some hosts that will only reach 20MB/sec read and 11/Write where the fastest has been somewhere around 30 read and 24 write.

Note that these are buffered speeds which measures your interface to the drive's buffer, the buffer to the actual media is much slower.

So why would an ATA100 drive only work at 30 on an interface that supposedly will do 60 (480/8)? It's the overhead of the system.

Now on Firewire I consistently see 50MB reads and 30-40MB writes, and with 800 about 60 which is also consistent with the ATA100 interface as it should be since 100MB/sec = 800Mbit/sec (FireWire 800) SATA on the other hand i've seen 80 but you don't have that option...

Anyway, don't take my word for it, grab yourself a copy of SiSoftware Sandra 2000 or any other good benchmark program and run a filesystem benchmark on the drive, note the results and then switch interfaces and run again to compare the two, I think you'll love the FireWire more than the USB, and who knows, It may just solve your problem.

-D
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Author Comment

by:fjrohlf
ID: 12386548
Continues to be a strange problem. I have had a problem with the no_more_irp_locations BSOD recently. From what I have read, it relates to USB devices and I do have quite a few. I just increased the maximum value for that parameter and now the LaCie drive is visible as it should be. For a while my other USB was not visible but after looking in Computer Management and doing a few refreshes in MyComputer they are now both visible. Seems to be some problem in the handling of USB devices.

I have not yet tried the firewire 400 connection again as I wanted to resolve the irp BSOD problem first. If that works then I may next try SP2 and see what that does.

Thanks for the interesting comments about USB 2 vs. FW400 - though it did not solve my problem.

Jim
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Author Comment

by:fjrohlf
ID: 12386679
Now after an hour of working on a document, the LaCie drive is no longer shown as a disk drive. It is now listed again under Network Places.

Jim
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Expert Comment

by:DABOMB
ID: 12386762
Very strange... now you say you have a number of usb devices? I assume you have not reached the 128 maximum? including all hubs/devices.

-D
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Author Comment

by:fjrohlf
ID: 12387947
No, not even close! I think I have about 9 or 10 USB devices and usually not all plugged in at one time. I do have 4 USB 2 hubs. Do the unused ports in the hubs count also?  If so, then it would still be less than 30.

Jim
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