With more than enough drive capacity available on my Bootcamp partition, upon attempting to update my version of Win XP to Service Pack 3, kept getting the error message:
"There is not enough disk space on C:\WINDOWS\$NtServicePackUninstall$ to install Service Pack 3 Setup requires an additional 4 megabytes of free space or if you also want to archive the files for uninstallation,Setup requires 4 additional megabytes of free space. Free additional space on your hard disk and then try again".
Not sure if I'd call this a 'fix', but the workaround for this issue was a Registry hack, by adding a registry key and tweaking, as follows:
1. Click Start – Run – Type “regedit” and press enter.
2. Navigate to
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Setup]
HKEY_LOCAL_MACHINE
\Software
\Microsoft
\Windows
\CurrentVersion
\Setup
3. In the right pane, Right-click and select New – String value
4. Name it as “BootDir” and set it's value to “C:\”
Without even rebooting, SP3 immediately installed itself with no further anomalies. (Note: As with both platform's 'Software Update' routines, (thank God), the download itself (a little over a Gig) usually residing in a "temp" directory, which then goes 'poof!', was seen by XP, and only the 'Install' was performed). I wish Adobe's temp folders would also hang onto their downloaded files which never got installed, before their script(s) run, deleting any remnants of the downloaded files.
