Will upgrading to OSX Mountain Lion erase my rEFIT dual boot Windows?

Then wait on update, and plan to (goes without saying hopefully) to have backups of both that you can always restore. Especially as this is a work computer in essence.

Lion had trouble until 10.7.1 and the Lion 4.0 Windows Support Software itself was buggy for those that were installing Windows (or upgrade their boot camp drivers with Lion's).

Until people look at the Lion Recovery partition and whether that changed in size or something, or other changes to the partition tables.

WinClone 3 and CampTune can both help preserve your installation and Carbon Copy Cloner to make bootable backup of Lion and Lion Recovery, in addition to TimeMachine. (TimeMachine has been improved and more flexible).

And store your ML install package somewhere - given how slow it is DL'ing I'd wait days to even bother.

I don't know if you need to wait on rEFIt, but my guess would be a 'yes.'

Maybe disable and uninstall it first to be safe. No metion of ML yet. Thre was one for Lion.

http://sourceforge.net/tracker/?group_id=161917&atid=821766

Having external backups of Windows 7 Pro and Lion though not very recent, I installed Mountain Lion on Mac Pro 3.1 this morning. Mac disk had ~45GB which went to 48GB after install.

First thing that must be done is check for updates which in my case included Safari, iMovie, iPhoto... (and Remote Desktop which I refused). These updates only became available to Lion after M.Lion became available
at about 9.30 ET this morning. Overall updates and install ran from 11.20 to 13.00.

Then, in Windows 7, checking Apple Software Update showed nothing available. So, no Bootcamp update is yet available for M. Lion.

There never was a "software update" to go from Boot Camp 3 to 4.0, it was done through Boot Camp Assistant. Whether that means BC 5.0 or not though remains to be seen, but does not seem likely it will be thru ASUW.

I would assume Early 2008 would likely not have Lion and Windows on the same drive.

So does Moutain Lion change the size though of Recovery volume in any way?

Yes, Mac is 1 drive, Windows 7 & 8 are on another.

The space taken on Mac drive has gone up by 1 to 2 GB.

The iStat utility 1) no longer shows "Processes" in boxes on the right and 2) # of processes showing in my version to the left of that has gone from ~65 to ~80; this with my having selected nothing from Cloud settings since I have nothing else to Sync with.

Running Software Update in M. Lion goes now to the App Store rather than the windowed display of Lion.

Option Boot shows Disk icon "Recovery-10.8"

Hi,

I warily upgraded to Mountain Lion a few hours ago, I had the same worries about refit as holding option never seemed to work. Anyway, after upgrading everything worked the same, refit showed upon startup and Windows 7 (created with BootCamp on SnowLeopard) works too.

Overall, I think if you've created an 'official' dual-boot, then installed refit you should be okay.

Hope you work it out 🙂

J.

Count me as one that doesn't have the old Win 7 partition option. I upgraded from Snow Leopard as well. The only thing that pops up is 10.8 Recovery.