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Switcher Hangout (Windows to Mac)
time machine backup failed
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<blockquote data-quote="Rod" data-source="post: 1865767" data-attributes="member: 204485"><p>The general rule of thumb for TM backup drives is to be roughly twice the size of the drive (volume) it's backing up.</p><p>So if you have a 1.12Tb internal drive you would be well advised to have a 2Tb external drive for TM.</p><p>If you are not concerned about loosing the data currently on the TM backup you can just erase it and start again.</p><p>Plug it in, ensure TM is not Running. If it is plugged in already, eject it, unplug it, wait for about 60secs then plug in again.</p><p>Open Disk Utility, select the backup in the sidebar menu, click the Erase tab, rename the drive, select Mac OS Extended (Journalled) Format, if given the option to choose mapping select GUIDE Partition Map and click erase.</p><p>After completion eject again, wait 60secs, plug in and open Time Machine from the Menu Bar, Select Preferences from the drop down menu and choose the erased drive for backup.</p><p>Be aware it will take a <strong>long</strong> time to complete a new full backup. You might like to let it run overnight. Do not unplug the backup drive or shut down your computer during the process and it will get hot.</p></blockquote><p></p>
[QUOTE="Rod, post: 1865767, member: 204485"] The general rule of thumb for TM backup drives is to be roughly twice the size of the drive (volume) it's backing up. So if you have a 1.12Tb internal drive you would be well advised to have a 2Tb external drive for TM. If you are not concerned about loosing the data currently on the TM backup you can just erase it and start again. Plug it in, ensure TM is not Running. If it is plugged in already, eject it, unplug it, wait for about 60secs then plug in again. Open Disk Utility, select the backup in the sidebar menu, click the Erase tab, rename the drive, select Mac OS Extended (Journalled) Format, if given the option to choose mapping select GUIDE Partition Map and click erase. After completion eject again, wait 60secs, plug in and open Time Machine from the Menu Bar, Select Preferences from the drop down menu and choose the erased drive for backup. Be aware it will take a [B]long[/B] time to complete a new full backup. You might like to let it run overnight. Do not unplug the backup drive or shut down your computer during the process and it will get hot. [/QUOTE]
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