Comments on: Flash 10 on Windows XP – Insufficient disk space!?

By: Keith Heiner

Keith Heiner — Mon, 12 Apr 2010 00:15:06 +0000

I already have a C: drive, and wanted to install it on my D: drive. So I tried to subst the C to H and the D to C. THe first worked, but the second said invalid parameter C. Now, I have an exact copy of the C: drive, and I don't know how to get rid of it. Please Help.

By: Deb

Deb — Fri, 20 Feb 2009 19:10:01 +0000

I was caught by the same gotcha! Thanks for the easy solution.

By: rye

rye — Sat, 14 Feb 2009 13:46:58 +0000

worked a treat thanks

By: Kyle

Kyle — Thu, 12 Feb 2009 22:09:46 +0000

Hung and Sarah,

I received the same error because one of my removable drives was already labeled C:, and it needed to be changed before the subst command would work.

You can find the instructions for changing a drive letter here: http://support.microsoft.com/kb/307844

I changed mine to H: temporarily and was able to use the original instructions to install Flash Player, no problems.

By: Sarah

Sarah — Sun, 08 Feb 2009 20:44:12 +0000

I’m having this same problem with trying to download flash player to firefox. What should be my C: drive is actually labeled as H: and although I tried your simple fix using the command prompt…it comes up with the following message to me: invalid parameter – C:

not sure what to do at this point. I also have internet explorer which has successfully downloaded flash player, however I do not like using that for internet access, and therefore need to get flash player to download for firefox still.

Help!!!!

By: hung

hung — Wed, 28 Jan 2009 23:44:59 +0000

subst is not working for me
get the invalid parameter – c all the time i try

By: Antony

Antony — Fri, 23 Jan 2009 23:26:53 +0000

Update – it worked. I don’t know what threw me about the message ‘Drive already SUBSTed’ but threw me it did and I forgot to try the installer again. If I had a brain I’d be dangerous… Many thanks.

By: Antony

Antony — Fri, 23 Jan 2009 23:12:32 +0000

Same problem with Adobe Flash on XP Pro, but when I try substituting primary drive letter I get ‘Drive already SUBSTed’. I have a second internal HDD as well as an external HDD, which may have something to do with it I don’t know. I can alter all drive letters except the one assigned arbitrarily at installation. Any advice appreciated.

By: Kim

Kim — Wed, 14 Jan 2009 03:25:18 +0000

omg thank you SOOOO much. I’ve been pulling my hair out. When we reloaded the computer, had the printer hooked up and it grabbed C: first so the HD is F:. I thought I was going to go nuts!! This worked like a charm!!!! You are a GENIUS!!!

By: Mahesh Asolkar

Mahesh Asolkar — Thu, 11 Dec 2008 22:10:09 +0000

Jon, you say your primary drive is ‘J:/’, but you did use ‘subst C: J:\’ (back-slash, not a forward-slash), correct?