オリジナル投稿者： Dan ,
Normally the first partition is the recovery partition which the newer OS's create if you don't already have one. For some reason it appears you have altered its size (59.81 GB) given the numbers you have supplied. See if you can take a snapshot of the Disk Utility drive overview so we can be sure here. post the image here for us to see. If that is correct you'll need to scratch the drive and start over doing a fresh install. Delete all of the partitions and start again. As to recovery from your backup. If you didn't have much space left on your SSD you may have encountered a sizing problem were your files need more space that what you now have on your SSD after the upgrade (between the recovery partition being created and the larger size of Yosemite its self).