I've got that login screen loop that some people have. But my situation's probably a bit different, because my school set up my Mac. This was after rEFItting my Mac though, so that may be part of the problem.
So far,
I have no rEFIt menu showing up, unless I run the enable-always.sh
shell in single-user mode (locked out of my Mac [will explain after])
I do have 2 partitions, one as my Mac HD, another is apparently
Windows, but disk utility doesn't detect that partition. That one was
originally free space.
To install refit I ran the mpkg file, then rebooted 3 times, as
needed, but no luck. I've managed to either boot from Linux Live CD
(Mint and Ubuntu), but not from rEFIt, or managed to get rEFIt to
work, but it doesn't detect the boot disk.
Right now I'm on my guest account because all my other Mac accounts
just reload the login screen. It's that weird loop which people had
before, where when you log in, you get a gray screen for a second or
two, then back to the login screen again. When you run it in Verbose
mode, I caught something (text is really fast) about Home Sync, so I
might try it at school.
So far I've tried resetting my PRAM, and repairing disk permissions
with both fsck as well as booting from a Mac OSX install disc, then
going to disc utility then repairing there. I have cleared out my
system and user caches with single user mode, and that allowed me to
get to the guest account, but my other accounts still don't work...
Luckily, I was prepared that this might happen, so I made a complete
Time Machine backup before I did this, so no data is lost, just the
ability to access my files now...
Right now I'm fine with rEFIt not working, I just need to be able to log in to accounts other than the guest one on my Mac...
Edit: I've already reblessed my Mac so rEFIt won't show, but I somehow still have a Mac HD partition and one which appears to be a FAT partition (named 'Windows'), but I never created this, and in disk utility it isn't showing up. The partition I did create for rEFIt was free space, not formatted.
So far,
I have no rEFIt menu showing up, unless I run the enable-always.sh
shell in single-user mode (locked out of my Mac [will explain after])
I do have 2 partitions, one as my Mac HD, another is apparently
Windows, but disk utility doesn't detect that partition. That one was
originally free space.
To install refit I ran the mpkg file, then rebooted 3 times, as
needed, but no luck. I've managed to either boot from Linux Live CD
(Mint and Ubuntu), but not from rEFIt, or managed to get rEFIt to
work, but it doesn't detect the boot disk.
Right now I'm on my guest account because all my other Mac accounts
just reload the login screen. It's that weird loop which people had
before, where when you log in, you get a gray screen for a second or
two, then back to the login screen again. When you run it in Verbose
mode, I caught something (text is really fast) about Home Sync, so I
might try it at school.
So far I've tried resetting my PRAM, and repairing disk permissions
with both fsck as well as booting from a Mac OSX install disc, then
going to disc utility then repairing there. I have cleared out my
system and user caches with single user mode, and that allowed me to
get to the guest account, but my other accounts still don't work...
Luckily, I was prepared that this might happen, so I made a complete
Time Machine backup before I did this, so no data is lost, just the
ability to access my files now...
Right now I'm fine with rEFIt not working, I just need to be able to log in to accounts other than the guest one on my Mac...
Edit: I've already reblessed my Mac so rEFIt won't show, but I somehow still have a Mac HD partition and one which appears to be a FAT partition (named 'Windows'), but I never created this, and in disk utility it isn't showing up. The partition I did create for rEFIt was free space, not formatted.