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JackMac4

List of unused drives

9 posts in this topic

I've found plenty of threads and discussions pertaining to functions related to working with lists of available drives, but what I need is a list of all other drives.

I presume I could accomplish this by iterating through the alphabet and comparing the results to a list of DriveGetDrive("all"), but it seems awefully cumbersome.

Is there a better method someone could suggest? I need to find 10 available drive letters and fill an array with those results in order to do some mapping.

Thanks in advance!

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There's a registry entry with a binary bit set for each use drive letter. It's not hard to find and that is left to the student as an exercise.

You could also just parse the results of DriveGetDrive().

;)


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#3 ·  Posted (edited)

$Drives = DriveGetDrive("ALL")
$Drive_String = StringUpper(StringReplace(FormatToString($Drives), ":", ""))
$Unused_Drives = StringReplace("ABCDEFGHIJKLMNOPQRSTUVWXYZ", $Drive_String, "")
MsgBox(0, "Unused:", $Unused_Drives)

Func FormatToString($Drives)
    $String = ""
    For $D = 1 To $Drives[0]
        $String &= $Drives[$D]
    Next
    Return $String
EndFunc

This:

Gets all drives

Turns the array into a single string

removes ":" from the drives

removes the found drives from a list of a-z

Edited by darkjohn20

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To get 10 available ones, use stringleft or stringright to get 10 letters, and then string split by "". Take each of those and do something.

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Or just as simple

$UnusedDrives = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
$Drives = DriveGetDrive("All")
For $i = 1 To Ubound($Drives) -1
    $sCurrent = StringLeft($Drives[$i], 1)
    $UnusedDrives = StringReplace($UnusedDrives, $sCurrent, "")
Next
MsgBox(0, "Result", $UnusedDrives)

George

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That works too, I just don't like working with arrays all the time. For me it is easier to convert to a string and use that string instead of having multiple loops sometimes.

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That works too, I just don't like working with arrays all the time. For me it is easier to convert to a string and use that string instead of having multiple loops sometimes.

No matter how you slice and dice it, when you use driveGetDrive() you still need to go through the array, either with your function or _ArrayToString()

George

Question about decompiling code? Read the decompiling FAQ and don't bother posting the question in the forums.

Be sure to read and follow the forum rules. -AKA the AutoIt Reading and Comprehension Skills test.***

The PCRE (Regular Expression) ToolKit for AutoIT - (Updated Oct 20, 2011 ver:3.0.1.13) - Please update your current version before filing any bug reports. The installer now includes both 32 and 64 bit versions. No change in version number.

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I know, I just prefer not using a lot of ubounds to read from arrays. I'd rather get it to a string and not deal with arrays. By the way, I didn't know there was an array to string function. I kind of just made my own.

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I know, I just prefer not using a lot of ubounds to read from arrays. I'd rather get it to a string and not deal with arrays. By the way, I didn't know there was an array to string function. I kind of just made my own.

Should get used to Ubound(). I would like to see all arrays 0 based at some point in time.

George

Question about decompiling code? Read the decompiling FAQ and don't bother posting the question in the forums.

Be sure to read and follow the forum rules. -AKA the AutoIt Reading and Comprehension Skills test.***

The PCRE (Regular Expression) ToolKit for AutoIT - (Updated Oct 20, 2011 ver:3.0.1.13) - Please update your current version before filing any bug reports. The installer now includes both 32 and 64 bit versions. No change in version number.

Visit my Blog .. currently not active but it will soon be resplendent with news and views. Also please remove any links you may have to my website. it is soon to be closed and replaced with something else.

"Old age and treachery will always overcome youth and skill!"

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