Windows 10 upgrade fails - not enough disk space
- Is your hibernation file off? From Administrative Command prompt
powercfg /h off
- Did you move your swap file to another drive?
- How big is c:\users\
Empty all of these folders
C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5
“C:\Users\_Your_username_\AppData\Local\Google\Chrome\Application”
“C:\Users\_Your_username_\AppData\Local\Chromium\Application”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Media Player”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Media Player\Image cache”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Messenger”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows Live\Contacts”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows Live\Contacts\[email protected]\15.4\DBStore\Backup\new”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Speech\Files\MSASR”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Speech\Files\TrainingAudio”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Explorer”
“C:\Users\_Your_username_\AppData\Local\Microsoft\Windows\Burn\”
“C:\Users\_Your_username_\AppData\Local\Temp”
“C:\Users\_Your_Username_\AppData\Roaming\Thunderbird\Profiles\u7n8j42k.default”.
c:\windows\temp
c:\program files\NVIDIA Corporation\Installer2
C:\Users\<name>\AppData\Local\Temp
Turn off Windows update Move C:\windows\SoftwareDistribution to another drive and junction it
mklink /J "C:\windows\SoftwareDistribution" "d:\junctions\SoftwareDistribution"
Turn windows update back on.
- Delete all but your last system restore point.
Re-install,Move,Junction the largest folders in
"c:\program files"
"c:\program files (x86)"
More in a minute.
You need to move and/or junction stuff to another drive. Is My Documents/Documents still on the C: drive? Move them!
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Andreas Hartmann
Updated on September 18, 2022Comments
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Andreas Hartmann over 1 year
When upgrading to Windows 10 it fails with the error WindowsUpdate_80070070 OR WindowsUpdate_dt000 - not enough disk space. According to the FAQ I need at least 8GB in order to upgrade, which I have on all three of my disks. On C: I have less than 11 though. Basically C: only contains Windows 8.1 and the upgrade files for Windows 10, there is almost no other data on there. Is there a way to upgrade from a different drive?
I have run the disk cleaning utility and I do not want to do a fresh install. I checked the drive with WinDirStat and there is no more data I can move or delete on C:. Any hints?
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Admin over 8 yearsUpgrade also backup your Windows folder, how big is your current Windows folder?
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Admin over 8 yearsMuch like "the cake is a lie" in portal 8gb is lie, try 16gb! What have you done? I will start a check list.
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Admin over 8 yearsHow many GB are in this hidden folder? C:\ProgramData
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Admin over 8 yearsIs your C: drive the whole physical drive or just 1 or several partition? If there is more than 1 partition resize the other one and make c: larger.
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