I have:

  • Main: working copy of Mac OS X the capitan, in a 1TB hard drive,
  • External: I have another external 1TB HD with the time machine copy,
  • Next Main?: Empty 120GB SSD HD

After deleting all the files I don't need, I have 138GB of used space in my main HD,

I'm thinking of restoring the Time machine backup to the SSD

My question is,

How Can I know for sure if the backup fits in my 120GB Disk?

PD: I know anyway that I need to delete, at least, 20GB more, but the question would come back then..

  • At least 10-15% of free space are recommended. So you would have to delete another 10 GB!
    – klanomath
    Dec 22, 2015 at 15:24
  • Thanks! I know, but I mean, to be able to restore it; I will care about perfomance once I restored successfully Dec 22, 2015 at 15:25


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