Can't back up my Iphone5 to my macbook pro, it tells me it may be corrupted, also I don't know how to delete the old backup to redo it

Question

Can't back up my Iphone5 to my macbook pro, it tells me it may be corrupted, also I don't know how to delete the old backup to redo it

Answer 1

Hi Caveman337,
Welcome to the Support Communities!  The resource below will explain how to delete an old iTunes backup.  Before you do this, I would suggest creating an iCloud backup of your iPhone. 
Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes - Apple Support
http://support.apple.com/en-us/HT203977
Back up using iCloud
If you're using iCloud, it can automatically back up your content. Use these steps to turn on iCloud Backup:
Tap Settings > iCloud > Backup. If you're using iOS 7 or earlier, tap Settings > iCloud > Storage & Backup.
Tap iCloud Backup to turn it on.
Tap Back Up Now.
After you turn on iCloud Backup, iCloud will back up your content automatically. You can return to this screen to see when the last back up happened.
Create and delete iPhone, iPad, and iPod touch backups in iTunes - Apple Support
http://support.apple.com/en-us/ht4946
Where your backups are stored
The folder where your backup data is stored depends on your computer's operating system. Make sure the backup folder is included in your data-backup routine. iTunes places the backup files in these places:
Mac: ~/Library/Application Support/MobileSync/Backup/
The "~" represents your Home folder. If you don't see Library in your Home folder, hold Option and click the Go menu.
Delete a backup
If you want to delete a backup created by iTunes:
Open iTunes Preferences:
Mac: Choose iTunes > Preferences.
Windows: Choose Edit > Preferences. Learn how to turn on menus in Windows 7 and 8.
Click Devices. (The iOS device doesn't need to be connected.)
iTunes will show the phone number, International Mobile Equipment Identity (IMEI) number, and serial number of the backed up iPhone when you position your mouse pointer over a backup. (Only the serial number will be shown for iPad and iPod touch). You can use this to find the backup you want to delete.
Select the backup you want to remove.
Click Delete Backup.
When prompted, confirm that you want to remove the selected backup by clicking Delete Backup.
Click OK to close the iTunes Preferences Window.
Backups that have a date and time stamp in the backup name are copies of backups created by restoring the iOS device. The date and time in the left column are when the restore-from-backup occurred. The date and time in the right column are the last synced date; this shows how current the data is.
I hope this information helps ....
- Judy