Looks like there is a bug in KB3100144 (Description of Cumulative Update 2 for System Center 2012 Configuration Manager Service Pack 2 and System Center 2012 R2 Configuration Manager Service Pack 1). The error occur when you install a management point.
MSI: There is not enough available disk space on to complete this operation. Installation requires at least 90MB free disk space. File C:\Windows\ccmsetup\configmgr2012ac–sp2r2sp1–kb3074857–x64.msp installation failed. Error text: ExitCode: 1603 Action: CcmCheckFreeDiskSpace.
<12/02/15 17:52:05> Installing pre-req using command line “D:\SMS\client\ccmsetup.exe” /UpgradeWithServer:mp
<12/02/15 17:52:22> Pre-req installer “D:\SMS\client\ccmsetup.exe” /UpgradeWithServer:mp finished with exit code 1
<12/02/15 17:52:22> Failed to Install Pre Req CcmSetup. Return Code is 1
<12/02/15 17:52:22> This was a required Pre Req, can not continue.
<12/02/15 17:52:22> Installation Failed. Error Code: 1
Uninstall the management point, monitor mpsetup.log till the uninstall is succeded
Uninstall the agent using the switch /uninstall, monitor ccmsetup.log till the uninstall is succeded
Reinstall the agent, but this time include the patch in the installation. C:\windows\ccmsetup\ccmsetup.exe patch=\\<Server>\sms_XXX\hotfix\KB3100144\Client\x64\configmgr2012ac-sp2r2sp1-kb3100144-x64.msp SMSSITECODE=XXX
XXX = your sitecode
<Server> = your site server
Install the management point, and you’re done.