Time machine backup too big for empty disk??

So I restart my MacBook Pro a few minutes after completing a full Time Machine backup.  When it restarts it goes through the grey startup screen, then gets stuck on the blue screen just  before the desktop normally appears. This happens whenever I startup. I am still able to hit the power button and get the Restart/Shut Down dialog, so I restart using my Snow Leopard boot disk, run Disk Utility, repair permissions, and repair disk, but the problem still remains. I decide to Restore from Time Machine Backup, so I erase my disk (80 GB, had only 200 MB free), go to the Restore screen and connect my backup disk. Now the weird part -- it says my latest backup is too big for the disk, even though i just erased everything, and 74.2 GB show as free. All my previous backups seem to fit fine, but apparently the last time Time Machine backed up more from my disk than can fit on my disk! It seems having a hard disk close to full is enough to render a backup effectively useless.  Guess I'll have to restore from a previous backup, then manually copy the newer files. Just wanted to alert others to this insane problem, so it doesn't happen to them.

dgordon412 wrote:
(80 GB, had only 200 MB free)
That's likely corrupted your system. You should have a minimum of 10% - 15% free at all times. That's almost certainly why it wouldn't restart.
even though i just erased everything, and 74.2 GB show as free.
There must be something else on the drive; if you erase it, it should have just under 80 GB free. Is there another partition?
Did you erase with a Leopard Install disc or a Snow Leopard disc? If you used a Leopard disc, that might explain showing only 74.2 GB free (it counts differently).
If so, use your +Snow Leopard+ install disc to do a complete reformat, and try to restore the backup. A Leopard disc cannot restore a Snow Leopard backup. Even the Snow Leopard disc may not work, as it's just too full and/or your system was damaged by getting too full.
All my previous backups seem to fit fine, but apparently the last time Time Machine backed up more from my disk than can fit on my disk! It seems having a hard disk close to full is enough to render a backup effectively useless.
Having an OSX drive that full will make your Mac extremely sluggish, cause data corruption and/or loss, apps to crash, etc.
 Guess I'll have to restore from a previous backup, then manually copy the newer files. Just wanted to alert others to this insane problem, so it doesn't happen to them.
If you can get your Mac running, you need to make several GBs of space immediately.
If all else fails, reformat the internal HD and install OSX from your Snow Leopard Install disc, then use +Setup Assistant+ after the Welcome video to transfer +*most, but not all+* of your stuff from the backup. Omit the contents of one or more large sub-folders in a home folder (such as Photos, Music, or Movies).
See #19 in [Time Machine - Frequently Asked Questions|http://web.me.com/pondini/Time_Machine/FAQ.html] (or use the link in *User Tips* at the top of this forum), for details.

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    dgordon412 wrote:
    (80 GB, had only 200 MB free)
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    All my previous backups seem to fit fine, but apparently the last time Time Machine backed up more from my disk than can fit on my disk! It seems having a hard disk close to full is enough to render a backup effectively useless.
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     Guess I'll have to restore from a previous backup, then manually copy the newer files. Just wanted to alert others to this insane problem, so it doesn't happen to them.
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