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mickscrill

macrumors newbie
Original poster
Aug 7, 2007
16
0
Hi i have a mac pro 2010 running Mojave.

i have two 500gb SSDs one with (Mojave) and one Carbon Copy Cloned (mojave Back up) and i just CCC between the two every two weeks or so.

I noticed in the bottom of Finder window i only had 66Gb available on the mojave backup so checked the Mojave drive, it says 169 Gb available.

Repaired both in disk utility, ok .

Did a load of cleaning out on the backup using omni sweeper as a guide but moving and deleting from Finder. Omni sweeper is showing 160 Gb free space and 6.5 Gb system file now on the backup which sounds correct but "About this mac, System report and disk utility are all showing 69 Gb free, also about this mac is showing massive 350Gb in system file.

Crucial 50GB is the backup

Samsung SSD 850 EVO 500GB is the Mojave.

I'm running on the backup at the moment.


Both on APFS. and the Mojave shows up as external drive?

any help would be really appreciated Thanks Ronny.
system.png
Screenshot 2019-09-12 at 4.56.13 pm.png
 
hi thanks that reminded me the Mojave is on a Samsung in a PCI slot hence the external thing, ok.
Any idea why the 2 clones are massively different sizes?
 
hi thanks that reminded me the Mojave is on a Samsung in a PCI slot hence the external thing, ok.
Any idea why the 2 clones are massively different sizes?

CCC isn't really low level bit to bit clone, but just OS level files copying. And most likely it won't / can't copy something like local time machine backup. Those "hidden" system files may cause the difference.
 
CCC isn't really low level bit to bit clone, but just OS level files copying. And most likely it won't / can't copy something like local time machine backup. Those "hidden" system files may cause the difference.
Hi thanks
I don't use Time machine and my system folder say 9Gb.
see pic
Screenshot 2019-09-12 at 11.18.36 pm.png
 
Hi there were only two backups in terminal, (CCC backups) successfully deleted them but hasn't changed anything.
 
you can try OmniDiskSweeper https://www.omnigroup.com/more to see what's taking all the space.

it may be a second user account taking all the space, that used to look like that.

edit
you have logic installed so it may be logic files?
 
you can try OmniDiskSweeper https://www.omnigroup.com/more to see what's taking all the space.

it may be a second user account taking all the space, that used to look like that.

edit
you have logic installed so it may be logic files?

Hi there, Yes I've used Omni and that shows what it should be which is about 100Gb smaller like theMojave drive.
All logic heavy stuff is on external drive.
I can't understand why two clones are vastly different sizes they never used to be.
I use them alternatively, if i install new plugins or OS X is updated i'll used them for a while then clone the drive and use that for a while and so on, not much goes on on the OS drives mostly everything is stored on other drives.
see pic 160Gb in omni, all other show 69Gb
Screenshot 2019-09-13 at 1.44.20 pm.png
 
Hey folks really appreciate the help on this
rpmurray, thanks that's interesting and will check that out.
Recloned the Mojave backup to Mojave PCIe and it hasn't cloned all that extraGb :)
also CCC snapshots are disabled on that but not the backup.
Screenshot 2019-09-13 at 8.19.17 pm.png
Screenshot 2019-09-13 at 8.28.50 pm.png
Screenshot 2019-09-13 at 8.30.49 pm.png
Screenshot 2019-09-13 at 8.30.49 pm.png
 
Use OmniDiskSweeper from the root user account. ODS won't be able to see into all folders if you use it from a regular (or even admin) user account.

Sweep both drives in separate windows. Then compare the results, looking for the size differences.
 
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In CCC you have 'Saftey Net On'. Therefore on your backup CCC is storing deleted files in a folder called 'saftey net' incase you deleted them by accident.
 
yeh i think I've got this now.
have cloned from backup over Mojave and its showing correctly looks like it was the CCC snapshots being switched on
 
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