Followed the on-screen prompts. After installing Lion, I went through the setup screens, which eventually prompted me to migrate files from among other things, a Time Machine backup. I attached the external HD containing the backup, selected the backup, and it went through the restore (approx. :30 min.). It completed at which point I was presented with a log-in screen with only Guest to choose from. When I restart holding down the option key, I see the migrated user as a selection option, but selecting it returns me to the guest only login screen.
Sorry I did not describe this correctly, yes the boot volumes show up, with the internal HD witht the fresh install of Lion showing the correct migrated user photo representing the volume, suggesting the migration was successful. However, only Guest shows up on the login screen.
I have since done a fresh reinstall of Lion, this time, I did not migrate my data as part of the Lion setup. Instead I setup an administrator user account, then created a temp account from which I launched migration Assitant and migrated my backup data to the primary user account (replacing the account with the backuped up user). After the migration, the primary user account was no longer available and a reboot put me right back at the Guest login with the addition of the temporary account I created. But no primary account. Once again the option key boot showed the boot volumes with the internal disk showing the correct primary account user photo. my mistake was not making the temp account an admin account, as none of my admin passwords no longer worked.
I originally asked this question because I was hoping to avoid a reinstall. Now that I've done it, and taken almost 5 hours to troubleshoot this problem reinstall and migtrate my data twice, the question is somewhat moot, as I was trying to reclaim my user account which seemed to be installed just inaccessible.
At this point, I am going to do a fresh reinstall of Lion, create a temp admin user account only and then migrate the backup to a new user account. Hopefully that will resolve any issues -- the original migration as well as the second both attempted to use the same user name as the backup, which appears to be a no no, so perhaps that is the problem even though the second install followed Apple's instructions to the letter. In both cases the migration appeared to go flawlessly, returning only one error -- that the user account "guest" could not be created, which is ironic since Guest was the only account presented at login. Either way, my question of how to log into the guest account has not been answered -- not that it matters. Though after setting up a temp user account on a fresh install of Lion, it appears that by default no Guest login is enabled after a fresh install -- in which case, even though I was presented with the single option to login as a Guest, doing so was not actually enabled under the OS. Very bizarre situation, and if my third reinstall and migration goes well, shows a huge problem with Apple's setup and migration software, and makes me wonder why this issue has not come up before, since this seems like a pretty standard scenario, especially when it comes to Macs without FireWire Targetdisk mode, which was the case here.
While I appreciate your enthusiasm, no the problem is not solved.
I just did a fresh reinstall of Lion, and chose to migrate the data as part of the Apple designed install process. I was very careful to setup the user information using very different information than the original user backup disk (something I should not have to do). When the migration/install was complete, I was once again presented with a login screen which only displayed Guest as a login option, requiring a password and no way to log in.
I have now spent almost 8 hours on a process that follows Apple's instructions to the letter. I am going to try one more time to do a migration after setting up a brand new unrelated user account and several TEST accounts, all of which have administrator access. This should allow me several shots at migrating my data without having to completely reinstall Lion. Though the migration still takes some :30 to complete. I'm looking at at least another 3 hours to resolve this issue on my own, before I take it to a genius bar to get them to explain and resolve.
From my perspective, this update to Lion is a complete disaster. There seems to be a fundemantal problem here with Apple's software.
You seem to be migrating corrupt user data from your old installation. Boot in single-user mode (command-S at startup.) When the text stops scrolling, follow the prompts to make the boot volume writable. Then enter the following command:
You should get the following line of output below what you entered:
If you do, then very carefully enter the following command:
Now you should get the following output:
The system will boot into the Setup Assistant, as if you were setting it up for the first time. Skip the prompt to transfer information. Create a user with the same name as the old admin user. Log in and test. You'll also need to recreate your other user accounts, if any.
As it turns out, I did not have to do that.
After the last reinstall, I did another manual migration. This time, I looked at the items that were going to be migrated. I noticed that in addition to the main user account there was a Guest account. I deselected the Guest account and migrated as I had before. Upon completion of the migration, I finally successfully logged into the account.
I appreciate your help, even though I eventually discovered the solution after almost 8 hours of trial and error.
The problem appears to be with Apple's migration software. This is a huge bug, and I paid the price. This kind of thing should never happen. As far as I can tell, the Guest account was in direct conflict with the Lion install Guest account and trying to migrate the backup Guest account somehow corrupted the migration.
What a mess. It's the first time I have ever attempted to use a backup disk to restore an entire disk, and I must say I found the experience very unpleasant.