1.    14 Aug 2015 #1
    Join Date : Aug 2015
    Posts : 3
    Windows 8.1

    Windows needs more space on upgrade


    So I was going to upgrade to Win10 today on my laptop but I received a message about Windows needing more space on my disk drive.

    8.1 is installed on my C:\, a 64Go SSD, of which 45Go is available, but only 5Go is free and Windows wants 14.8Go. I cannot create anymore space, I have tried (no hibernate, all software moved to D:\, disk cleanup etc.). However I also have another HDD in my laptop. I thought about clicking "choose an external drive to use" so I could use my 1To D:\ drive.

    If I choose this, what will it mean ? Will Windows 10 still be installed on the C:\ drive ? What will by put on to D:\ ? Will I be able to roll back to 8.1 if something goes wrong ?

    Thanks for your help.
      My System SpecsSystem Spec

  2.    14 Aug 2015 #2
    Join Date : Jun 2015
    Posts : 1,580
    Windows 3.1 to Windows 10

    by selecting that option - the windows.old folder will be created on external media -

    the message is you do not have enough room to upgrade OS and keep current OS in windows.old folder

    as long as you have the windows.old - windows 10 should be able to rollback the upgrade
      My System SpecsSystem Spec

  3.    14 Aug 2015 #3
    Join Date : Apr 2014
    Space coast of Florida
    Posts : 3,817
    Windows 10 Pro X64 14393.105

    Not sure it will work at all. If you select D: then you are not upgrading an existing qualified OS so you will not be able to activte Win 10. At least that's what I see from your remarks. Wouldn't be the first time I've been wrong though
      My System SpecsSystem Spec

  4.    14 Aug 2015 #4
    Join Date : Aug 2015
    Posts : 3
    Windows 8.1

    OK, so I gave it a go anyway. From what I read online, only the Windows.old folder and where Windows stores the temporary install files are actually affected by this.

    Update went smooth with no problems, although I did have to restart a couple of times because my graphics drivers were a bit wonky. I've just had a look, and things are a bit different to what I expected.

    The Windows.old file is on my C:\. On my D:\ drive is a file labeled $WINDOWS.~TMP which I hazard a guess contains everything that Windows downloaded to install 10, new drivers etc. However, Windows 10 itself is still installed on the C:\. Even stranger, I seem to have gained about 10Go space on my SSD. I had read that 10 had a lower footprint that 8.1, but I didn't think it was this much.

    TL;DR : Used D:\ drive when Windows asked for more space during upgrade to 10. Worked fine.

    Anyway, everything seems fine for now (fingers crossed !). Thanks for your input! I'm marking the thread as solved.
      My System SpecsSystem Spec


Similar Threads
Thread Forum
Reclaim space on hdd
I need to reclaim some space on the hard drive that my Windows 10 is installed on this pc. There is a Windows.old.000 folder (13.2 GB) and a Windows.old folder (9.09 GB). Can I still use Disk Cleanup with Windows 10 to do this, and is...
Performance & Maintenance
Solved Windows 10 claimed ~30GB of my SSD space. Is this normal?
Hello, Supra from 7 and 8 forums! I upgraded from Windows 8, and I haven't been able to figure out where this all came from, but a large chunk of it, is Windows.old. I searched how to free up that space, but that only offered me ~5GB. How would I...
Performance & Maintenance
Space saver
Brink has a tutorial posted on cleaning up the Win10 WindowsSxS folder. Those same commands work on Win8.1 and possibly Win7, I can't recall for sure about Win7:huh: With all the large ISOs and ESDs floating around some may be low on space. I...
General Support
Solved Updating - Free up disk space (windows.old etc)
Hi there To Windows updaters (those who've upgraded rather than done a "Clean install"). This is also especially good if you are using smaller capacity SSD's for your installation or even VM's where you don't want to use too much disk space...
Installation and Setup
Solved Windows 10 Install says I don't have enough space
I have a 2 terrabyte HD as a backup/file server in my machine. My C drive is a 500 gig SSD. I partitioned the HD and left 625 gigs for Win10. I originally had a problem because my BIOS was not set to Legacy, but I fixed that. NOW the install...
Installation and Setup
Our Sites
Site Links
About Us
Windows 10 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 10" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd
All times are GMT -5. The time now is 17:39.
Find Us
Twitter Facebook Google+

Windows 10 Forums