Time Machine: When can I delete?

Time Machine seems to be considered as unlimited external HARD drive...

I started using TM a few months previously and made my drive external HARD quickly became crowded.

My understanding is that TM will be in safeguarding the principle that what has changed since the last backup.  However, I noticed that there is a list of all the previous backups.  Now, at some point, I need to delete stuff for free space!... If I delete the backups say, keeping just the last two (according to the dates appearing), am I deleting stuff to the "full" backup (i.e.: the last backups didn't need to backup stuff?) Or is the program smart enough to copy previous backups?

I have a 1 TB of HARD drive on my MBP, not those newer "128 or 256 GB", then Yes: there is trick to back up here...

Thank you
Rob

"If a Time Machine destination is full so that a new backup cannot be stored, it starts to delete older backups to free up space. For example, if you first activated Time Machine in 2013, and the disk is full today, these first backups from 2013 will begin to disappear.

It is worth noting that Time Machine will not tell you when this happens, unless you select to be told by opening system preferences, click on the Time Machine, by clicking on the Options button, and put a tick in the box head notify after old backups are deleted. »

Ref: http://www.macworld.co.uk/feature/mac-software/complete-guide-time-machine-mac-b ackup-3626572 /

TM will automatically use hourly backups for the past 24 hours, daily backups for the month past and weekly for the past few months a whole. Older backups are deleted when your backup drive is full.

Use Time Machine to back up or restore your Mac - Apple Support

Tags: Notebooks

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