Currently Being ModeratedApr 19, 2012 8:21 PM (in response to Pondini)
So, my last two bullets to shoot are: a wipe + full restore and/or reinstalling Lion from scratch + restore of my data.
Right now I'm in India for my job, so I will not try either one until I'm back to my office in Italy (that will be in two or three weeks).
I'll post back the results.
If in the meantime you have any other idea to try: I'm all ears... :-)
Once again thanks a lot for your support!
Currently Being ModeratedApr 19, 2012 8:37 PM (in response to Giangiva)
So, my last two bullets to shoot are: a wipe + full restore
The one poster said that fixed it for him. It makes no sense to me, but then the problem doesn't, either. See Time Machine - Frequently Asked Question #14 for detailed instructions.
and/or reinstalling Lion from scratch + restore of my data.
No; you can install a fresh copy of Lion without disturbing your data. That's why I posted "It's not hard, but can take a while if you have to download OSX again." See Installing the ''combo'' update and/or Reinstalling OSX.
Currently Being ModeratedApr 24, 2012 8:45 PM (in response to Pondini)
Ok, I think I "fixed" it.
I did it the other way round.
I bought a new usb drive, partitioned, formated and it's working correctly.
To make the long story short, the key point (I think) was to give it a different name.
Actually, I'm in programming computer since many years, but this is my first mac and I have it only since a couple of months, so for many things I have to waste(?) some time to find "the apple way".
I went a little crazy partitioning the new drive because I wanted to reserve space for a recovery partition and I had to figure out how to do it with the apple tools (disk utility + recovery disk assistant).
Once done, I had a bad experience with my backup partition: osx didn't mount it automatically and in the disk utility its name was greyed out.
Doing again the same procedure but using a never-used-before volume name did the trick.
Since the other user fixed the problem by wiping osx and restoring it from the backup, my guess is that osx is keeping some information about the volumes being connected to the system and, in my case, the info for the previously used usb drive are incorrect/inconsistent.
Still my guess: these info must be stored in a temporary place which is not backed up, hence it is not restored.
Could it be the system cache? Or maybe something similar.
The reason why I put "fixed" in quotes is that I didn't really fixed the problem, I just turned around it.
Once again, Pondini, thanks a lot for your support and for helping me thinking about the problem!
Currently Being ModeratedApr 25, 2012 7:25 AM (in response to Giangiva)
That's pretty strange.
OSX keeps track of volumes by their UUIDs (Universaly Unique IDentifiers), not the names. That's why you can have two partitions with the same name connected to the same Mac, and OSX still knows which is which. Or change the name of a disk without OSX losing track of it.
The UUID is assigned when you format or erase a disk. You can see it via Disk Utility by selecting a parttion and clicking the Info icon in the toolbar (or selecting File > Get Info from the menubar).
But, whatever it was, glad it's sorted out!