Solved Need HD getting full alert

GerryPeters · Jun 3, 2026

So far everything looks perfect for my needs. I like the 50,100,200,500 settings. A minor tweak would be to let me set a limit of 100 gig for a 2nd HD and for a 3rd HD 50 gig. I have my backup HD set at 200 for now and am copying some files to it to push it below 200 gig. I like the alert window better also - a very non intrusive small window on the far right bottom. I like the way it stays on until I turn it off and when i reboot it comes back on.

Super job!

dacrone · Jun 3, 2026

GerryPeters said:
So far everything looks perfect for my needs. I like the 50,100,200,500 settings. A minor tweak would be to let me set a limit of 100 gig for a 2nd HD and for a 3rd HD 50 gig. I have my backup HD set at 200 for now and am copying some files to it to push it below 200 gig. I like the alert window better also - a very non intrusive small window on the far right bottom. I like the way it stays on until I turn it off and when i reboot it comes back on.

Super job!

i'll play with adding individual thresholds for each drive in a bit. using windhawk to create a liquidglass start menu/taskbar and broke a component :ffs:

time to restore lol

OldMainframeGuy · Jun 3, 2026

GerryPeters said:
I have a 14TB backup USB HD, I want to get an alert when it's only has about 200 GIGS of space left so I can delete some files. I got Space Patrol and so far it's not giving me the notice At 500 GIGS free space left. Has anyone used this PRG or has another recommendation?

Hard Disk Sentinel will do this but it's not free. I've used it for years.

Hard Disk Sentinel - HDD health and temperature monitoring

Monitoring hard disk health and temperature. Test and repair HDD problems, predict disk failure.

www.hdsentinel.com

GerryPeters · Jun 3, 2026

After it went to 184 gig on my G drive which I have set to 200 gig. The alert didn't come on until I rebooted and restarted your EXE file. Then the alert popped up. I'm trying to figure out how to set your EXE as a startup item.

dacrone · Jun 3, 2026

dacrone said:
To make it auto run at startup, create a shortcut to the exe and place the shortcut in Shell:Startup directory.

GerryPeters said:
The alert didn't come on until I rebooted and restarted your EXE file

did it show once and you dismissed it? that would be why it did not show again

GerryPeters · Jun 3, 2026

My 14Tb HD has 525 free space and the alert keeps coming on incorrectly for less than 200 gigs. I close the alert and then after a while it turns back on.

GerryPeters · Jun 3, 2026

Where is the Shell:Startup directory.?

dacrone · Jun 3, 2026

GerryPeters said:
My 14Tb HD has 525 free space and the alert keeps coming on incorrectly for less than 200 gigs. I close the alert and then after a while it turns back on.

i cant replicate this. i'll try some other methods but cannot troubleshoot it until i can replicate it

GerryPeters said:
Where is the Shell:Startup directory.?

in file explorer address bar just type that and press enter, or win+r to open run box and type it and press enter

cheaterslick · Jun 3, 2026

Ghot said:
Is there some reason you can't just look at it in Disk Management?
When it says 1.5% free space (a bit over 200GB), or less... it's time to delete some files.

Or just a quick glance in File Explorer where it will show you how much space is left. I do that all the time.

GerryPeters · Jun 4, 2026

I've done extensive testing today. I have 7 HD's connected, 3 are USB. Everything is working perfectly now. I now have the correct shortcut in my Startup folder. I added 4 HD's to the list and set it at 50 gigs. The correct alerts came up. I tried 100 gigs then 200 gigs all has worked fine. It started with the 1 minute interval, then 5 min. I now have 2 HDs monitored. Part of my problem, may have been when I put the shortcut in my startup folder it was the wrong one. I fixed it today.

Thanks for this excellent solution

GerryPeters · Jun 4, 2026

I did a few reboots with it set at 100 gig and everytime it returns to 200 gig, your initial default setting

GerryPeters · Jun 5, 2026

dacrone, Here's where I put the shortcut C:\Users\name\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HDD_LowDsk_Monitor_Notifier_MsgBox.exe

I keep chianging it to 100 gig and upon reboot it reverts back to 200 gig. Can you confirm this on your end?

dacrone · Jun 5, 2026

GerryPeters said:
dacrone, Here's where I put the shortcut C:\Users\name\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\HDD_LowDsk_Monitor_Notifier_MsgBox.exe

I keep chianging it to 100 gig and upon reboot it reverts back to 200 gig. Can you confirm this on your end?

try this:

Code:

#Persistent
#SingleInstance Force
Menu, Tray, Icon, %A_WinDir%\System32\shell32.dll, 54

monitoring := true
alertedDrives := {}

spaceThreshold := 200
currentThreshold := "200 GB"

checkInterval := 300000
currentInterval := "5 Minutes"

; --- CONFIG ---
configDir := A_AppData "\HDD_Monitor_AHK"
configFile := configDir "\config.ini"

If !FileExist(configFile)
{
    IniWrite, C:, %configFile%, Drives, Drive1
    IniWrite, D:, %configFile%, Drives, Drive2

    ; Save defaults
    IniWrite, 200, %configFile%, Settings, Threshold
    IniWrite, 300000, %configFile%, Settings, Interval
}

; Load threshold
IniRead, spaceThreshold, %configFile%, Settings, Threshold, 200

if (spaceThreshold = 50)
    currentThreshold := "50 GB"
else if (spaceThreshold = 100)
    currentThreshold := "100 GB"
else if (spaceThreshold = 200)
    currentThreshold := "200 GB"
else if (spaceThreshold = 500)
    currentThreshold := "500 GB"

; Load interval
IniRead, checkInterval, %configFile%, Settings, Interval, 300000

if (checkInterval = 60000)
    currentInterval := "1 Minute"
else if (checkInterval = 300000)
    currentInterval := "5 Minutes"
else if (checkInterval = 600000)
    currentInterval := "10 Minutes"
else if (checkInterval = 900000)
    currentInterval := "15 Minutes"
else if (checkInterval = 1200000)
    currentInterval := "20 Minutes"
else if (checkInterval = 1500000)
    currentInterval := "25 Minutes"
else if (checkInterval = 1800000)
    currentInterval := "30 Minutes"
else if (checkInterval = 3600000)
    currentInterval := "1 Hour"
else if (checkInterval = 7200000)
    currentInterval := "2 Hours"
else if (checkInterval = 18000000)
    currentInterval := "5 Hours"
else if (checkInterval = 43200000)
    currentInterval := "12 Hours"

; ---------------------------
; INTERVAL MENU
; ---------------------------
Menu, IntervalMenu, Add, 1 Minute, SetInterval
Menu, IntervalMenu, Add, 5 Minutes, SetInterval
Menu, IntervalMenu, Add, 10 Minutes, SetInterval
Menu, IntervalMenu, Add, 15 Minutes, SetInterval
Menu, IntervalMenu, Add, 20 Minutes, SetInterval
Menu, IntervalMenu, Add, 25 Minutes, SetInterval
Menu, IntervalMenu, Add, 30 Minutes, SetInterval
Menu, IntervalMenu, Add
Menu, IntervalMenu, Add, 1 Hour, SetInterval
Menu, IntervalMenu, Add, 2 Hours, SetInterval
Menu, IntervalMenu, Add, 5 Hours, SetInterval
Menu, IntervalMenu, Add, 12 Hours, SetInterval

; Default checkmark
Menu, IntervalMenu, Check, %currentInterval%

; ---------------------------
; THRESHOLD MENU
; ---------------------------
Menu, ThresholdMenu, Add, 50 GB, SetThreshold
Menu, ThresholdMenu, Add, 100 GB, SetThreshold
Menu, ThresholdMenu, Add, 200 GB, SetThreshold
Menu, ThresholdMenu, Add, 500 GB, SetThreshold

; Default checkmark
Menu, ThresholdMenu, Check, %currentThreshold%

; ---------------------------
; TRAY MENU
; ---------------------------
Menu, Tray, NoStandard
Menu, Tray, Add, Manage Monitored Drives, ManageDrives
Menu, Tray, Add, Pause Monitoring, ToggleMonitoring
Menu, Tray, Add
Menu, Tray, Add, Check Interval, :IntervalMenu
Menu, Tray, Add, Low Space Threshold, :ThresholdMenu
Menu, Tray, Add
Menu, Tray, Add, Exit, ExitApp

SetTimer, CheckSpace, %checkInterval%
return

; ---------------------------
; MAIN CHECK
; ---------------------------
CheckSpace(force := false)
{
    global alertedDrives, spaceThreshold

    drives := LoadDrives()

    for index, drive in drives
    {
        ; --- Get free space in KB ---
        DriveSpaceFree, freeKB, %drive%
        if ErrorLevel
            continue  ; skip if the drive doesn't exist

        ; --- Convert KB → GB and round ---
        freeGB := Round(freeKB / 1024 / 1024, 1)  ; 1 decimal place

        ; --- Check against threshold ---
        if (freeGB <= spaceThreshold)
        {
            ; Only alert once per drive unless forced
            if (force || !alertedDrives.HasKey(drive))
            {
                alertedDrives[drive] := true

                MsgBox, 48, Low Disk Space Warning, % "Drive " drive " has low free space:`n`n" freeGB " GB remaining (`< " spaceThreshold " GB threshold)."
            }
        }
        else
        {
            ; Reset alert if space is now above threshold
            alertedDrives.Delete(drive)
        }
    }
}

; ---------------------------
; SET INTERVAL
; ---------------------------
SetInterval:
    global checkInterval, monitoring, currentInterval
    selected := A_ThisMenuItem
    currentInterval := selected

    ; reset checkmarks
    Menu, IntervalMenu, Uncheck, 1 Minute
    Menu, IntervalMenu, Uncheck, 5 Minutes
    Menu, IntervalMenu, Uncheck, 10 Minutes
    Menu, IntervalMenu, Uncheck, 15 Minutes
    Menu, IntervalMenu, Uncheck, 20 Minutes
    Menu, IntervalMenu, Uncheck, 25 Minutes
    Menu, IntervalMenu, Uncheck, 30 Minutes
    Menu, IntervalMenu, Uncheck, 1 Hour
    Menu, IntervalMenu, Uncheck, 2 Hours
    Menu, IntervalMenu, Uncheck, 5 Hours
    Menu, IntervalMenu, Uncheck, 12 Hours

    Menu, IntervalMenu, Check, %selected%

    ; map interval
    if (selected = "1 Minute")
        checkInterval := 60000
    else if (selected = "5 Minutes")
        checkInterval := 300000
    else if (selected = "10 Minutes")
        checkInterval := 600000
    else if (selected = "15 Minutes")
        checkInterval := 900000
    else if (selected = "20 Minutes")
        checkInterval := 1200000
    else if (selected = "25 Minutes")
        checkInterval := 1500000
    else if (selected = "30 Minutes")
        checkInterval := 1800000
    else if (selected = "1 Hour")
        checkInterval := 3600000
    else if (selected = "2 Hours")
        checkInterval := 7200000
    else if (selected = "5 Hours")
        checkInterval := 18000000
    else if (selected = "12 Hours")
        checkInterval := 43200000

    IniWrite, %checkInterval%, %configFile%, Settings, Interval

    ; restart timer only
    if (monitoring)
    {
        SetTimer, CheckSpace, Off
        SetTimer, CheckSpace, %checkInterval%
    }

    TrayTip, HDD Monitor, Interval set to %selected%, 3
return

; ---------------------------
; SET THRESHOLD
; ---------------------------
SetThreshold:
    global spaceThreshold, currentThreshold

    selected := A_ThisMenuItem
    currentThreshold := selected

    ; clear checks
    Menu, ThresholdMenu, Uncheck, 50 GB
    Menu, ThresholdMenu, Uncheck, 100 GB
    Menu, ThresholdMenu, Uncheck, 200 GB
    Menu, ThresholdMenu, Uncheck, 500 GB

    Menu, ThresholdMenu, Check, %selected%

    if (selected = "50 GB")
        spaceThreshold := 50
    else if (selected = "100 GB")
        spaceThreshold := 100
    else if (selected = "200 GB")
        spaceThreshold := 200
    else if (selected = "500 GB")
        spaceThreshold := 500

    IniWrite, %spaceThreshold%, %configFile%, Settings, Threshold

    TrayTip, HDD Monitor, Threshold set to %spaceThreshold% GB, 3
return

; ---------------------------
; LOAD DRIVES
; ---------------------------
LoadDrives() {
    global configFile
    drives := []
    index := 1
    Loop
    {
        IniRead, val, %configFile%, Drives, Drive%index%
        if (val = "ERROR")
            break
        drives.Push(val)
        index++
    }
    return drives
}

; ---------------------------
; MANAGE DRIVES GUI
; ---------------------------
ManageDrives:
    Gui, Destroy
    Gui, Add, Text,, Current monitored drives:
    Gui, Add, ListBox, vDriveList w200 h120, % GetDriveListText()
    Gui, Add, Button, gAddDrive w90, Add Drive
    Gui, Add, Button, gRemoveDrive x+10 w90, Remove Drive
    Gui, Add, Button, gCloseManage w90, Close
    Gui, Show,, Manage Drives
return

GetDriveListText() {
    drives := LoadDrives()
    out := ""
    for k, v in drives
        out .= v "|"
    return out
}

AddDrive:
    InputBox, newDrive, Add Drive, Enter drive letter (e.g., E:)
    if (ErrorLevel || newDrive = "")
        return
    StringUpper, newDrive, newDrive
    global configFile
    index := 1
    Loop
    {
        IniRead, val, %configFile%, Drives, Drive%index%
        if (val = "ERROR")
            break
        index++
    }
    IniWrite, %newDrive%, %configFile%, Drives, Drive%index%
    GuiControl,, DriveList, % GetDriveListText()
return

RemoveDrive:
    GuiControlGet, selected,, DriveList
    if (selected = "")
        return
    global configFile
    drives := LoadDrives()
    FileDelete, %configFile%
    index := 1
    for k, v in drives
    {
        if (v != selected)
        {
            IniWrite, %v%, %configFile%, Drives, Drive%index%
            index++
        }
    }
    GuiControl,, DriveList, % GetDriveListText()
return

CloseManage:
    Gui, Destroy
return

; ---------------------------
; PAUSE / RESUME MONITORING
; ---------------------------
ToggleMonitoring:
    global monitoring, checkInterval
    if (monitoring)
    {
        SetTimer, CheckSpace, Off
        monitoring := false
        Menu, Tray, Rename, Pause Monitoring, Resume Monitoring
    }
    else
    {
        SetTimer, CheckSpace, %checkInterval%
        monitoring := true
        Menu, Tray, Rename, Resume Monitoring, Pause Monitoring
    }
return

; ---------------------------
; EXIT
; ---------------------------
ExitApp:
ExitApp

GerryPeters · Jun 5, 2026

Fixed. Now when I reboot it holds the 100 gig setting

thanks

dacrone · Jun 5, 2026

still going to add separate thresholds for separate drives. just havent had the time yet. should get it done tonight or tomorrow

GerryPeters · Jun 5, 2026

yes separate thresholds for separate drives is very good - no hurry. Right now things are great
Thanks

GerryPeters · Friday at 9:31 AM

dacrone said:
still going to add separate thresholds for separate drives. just havent had the time yet. should get it done tonight or tomorrow

dacrone, one of my HD's that is monitored is about 54 gigs. I have all my HD's set for a 100 gig threshold. The alert is not coming on. How can I fix this?

Solved Need HD getting full alert

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