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Free Space Being Read As Used Space on External HD

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#1 !@@**##


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Posted 22 March 2018 - 10:56 PM

Using Windows 7.


The external hard drive where I have my active folders reports that it has only 44.8 GB free of 931 GB total.  This is what the bar and pie charts show.  But I really don't have that much stuff on here.


So I ran WinDirStat and it shows a huge grey rectangle designated <Free Space> taking up 64% of the disk but amounting to 44.9 GB, even though 64% of free space should be about 600 GB free, not 44.9.


When I total up the folder space in Explorer, it looks like I should have about 64% free.


I checked the Manage Windows Backup data.  It shows 89.90 GB data file backup, 193.21 GB System Image, 603.54 GB Other Files, and 44.87 GB Free space, for a total of 931.51 GB. 


I guess my questions are:  1) why the discrepancy?  2) what do the Manage Windows Backup Data entries tell me?  and 3) what does all of this tell me about clearing up space so that the bar and pie charts show about 64% of free disk space and the computer functions accordingly?  I did turn off the automatic backup scheduling; it was on but had not backed up for more than a year.

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#2 !@@**##

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Posted 23 March 2018 - 08:31 AM

Under Manage Windows Backup I deleted the 89.90 GB data file backup.


When I click "show unknown" in WinDirStat it creates a large yellow rectangle in the tree map and an entry in the grid view reporting 82.8% and 771.5 GB as <Unknown>.  And only 14.5% and 134.8 GB <Free Space>.


WinDirStat Help says this large "unknown" can be the result of directories such as "System Volume Information" with read-access denied, or XP 'System restore points' under C:\System Volume Information with denied access.


So my question now is how to determine the information that Windows 7 is denying access to and how to determine what of it I can safely delete and how to do that.

Edited by !@@**##, 23 March 2018 - 08:56 AM.

#3 RolandJS


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Posted 23 March 2018 - 10:21 AM

If I remember correctly, one can delete all SRPs and/or re-allocate the byte-space to be set aside for SRP storage.  One cannot access System Information directory directly from within Windows.

"Take care of thy backups and thy restores shall take care of thee."  -- Ben Franklin revisited.


Backup, backup, backup! -- Lady Fitzgerald (w7forums)

Clone or Image often! Backup... -- RockE (WSL)

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