win 7 Home on 2 machines shows different sized network server share

Two users on their own machines have equal rights to a shared folder on a windows 2003 R2 machine.
Both are running win 7 home edition

'My Computer' on the first shows the share connected as a lettered network drive of 200GB with a green bar and 26GB free space equal to the same the server shows on its console.
The other machine shows the same shared folder share connected as a lettered network drive of only 2GB with a RED bar and ONLY 1.2MB free space.

As win 7 Home cannot connect to a domain, both machines are set in a workgroup which is the same name as the domain the server is in.

The Win 7 Home on the first machine is a 1 year older  edition than the 2nd...that's all that is different. (So I am reluctant to update the earlier one)

What registry or other setting controls this network drive size determination in Win7 Home such that one machine is getting it wrong.?
Is this a 'no solution' problem SO upgrading to Win 7 Pro is the only way, and all will be solved when I join the machines to the domain?
Who is Participating?
Norm DickinsonGuruCommented:
Likely the server is set up with a quota for hard drive space for the user with only 2 GB total space showing, and that user has stored just under 2 GB already.
JohnBusiness Consultant (Owner)Commented:
Make sure both machines have Service Pack 1 installed and both are at the same update level (there are a lot of Windows updates over the past year).

Also try a different (third) machine to see if one or both machines are wrong.

I have never had to use registry settings to make Windows 7 Pro work and display correctly on any recent server (Windows 2003 forward).

Both machines should be Pro to work well with a server, but try the above things first.

.... Thinkpads_User
David Johnson, CD, MVPOwnerCommented:
Q: what is the true status of the share?
Q: are you using the same username and password from both machines to connect to the share?
Q: any quota restrictions on the share?
cliffrtAuthor Commented:
Many thanks....didn't realize after taking over admin of this server that quotas was on!
Norm DickinsonGuruCommented:
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