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pebe
Nobel Prize Winner

United Kingdom
1078 Posts
Posted - Apr 09 2011 :  10:27:44 AM  Show Profile  Reply with Quote
I have two USB pen drives each containing the portable 'RoboForm2Go' program and a boot.ini file.

If I plug in each one, in turn, it comes up with a different drive letter. Why?

wasssup1990
Nobel Prize Winner

A Land Down Under
2261 Posts
Posted - Apr 09 2011 :  11:43:31 AM  Show Profile  Visit wasssup1990's Homepage  Reply with Quote
Ummm... because they are two different pen drives. Am I missing something here?
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion.
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pebe
Nobel Prize Winner

United Kingdom
1078 Posts
Posted - Apr 09 2011 :  12:10:46 PM  Show Profile  Reply with Quote
quote:
Originally posted by wasssup1990

Ummm... because they are two different pen drives. Am I missing something here?
One is a 'LeoDisk 2GB', the second is 'memory 4GB'.

I've copied the files onto a Kingston DT Mini Fun 1GB and it gives the same drive letter as the 'memory 4GB' one, so I don't think it's the size.
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wasssup1990
Nobel Prize Winner

A Land Down Under
2261 Posts
Posted - Apr 09 2011 :  12:35:20 PM  Show Profile  Visit wasssup1990's Homepage  Reply with Quote
It might be windows remembering what the last drive letter was for that particular drive. You can change drive letters if you want to.



Administrative Tools -> Computer Management
-> Storage
-> Disk Management

Then right click on your volume and click on the button that lets yo change the drive letter.
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion.
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pebe
Nobel Prize Winner

United Kingdom
1078 Posts
Posted - Apr 09 2011 :  2:53:45 PM  Show Profile  Reply with Quote
I think it's a bit more subtle than that. I can juggle these three drives about and plug any one of them in at random.

The computer always knows which one is the LeoDisk - as though it knows the answer to the 'Find the Lady' card trick!
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wasssup1990
Nobel Prize Winner

A Land Down Under
2261 Posts
Posted - Apr 10 2011 :  02:42:24 AM  Show Profile  Visit wasssup1990's Homepage  Reply with Quote
Well all USB devices should have unique hardware descriptors. These numbers are programmed into the device and cannot be changed unless they can be hacked. This is how an OS can identify a particular class of USB device and load the appropriate drivers for it. Without these descriptors the OS wouldn't know what to do with your USB pen drives. So that may be the subtle reason why windows knows the answer to the 'Find the Lady' card trick! LOL
When one person suffers from a delusion it is called insanity.
When many people suffer from a delusion it is called religion.
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Aaron Cake
Administrator

Canada
6718 Posts
Posted - Apr 10 2011 :  10:40:22 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
Does one USB key have U3 and one not?
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