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Hi, I wish to update from OS 10.11.6 to the next available version, is it possible and will I loose all data?
Late 2015 iMac
Modellnavn: iMac
Modellidentifikator: iMac17,1
Prosessornavn: Intel Core i5
Prosessorhastighet: 3,3 GHz
Antall prosessorer: 1
Totalt antall kjerner: 4
Nivå 2-buffer (per kjerne): 256 kB
Nivå 3-buffer: 6 MB
Hukommelse: 16 GB
Start-ROM-versjon: IM171.0157.B00
SMC-versjon (system): 2.34f2
iMac 27″
Definitely back up your Mac before updating. El Capitan is the original OS for that model and you can update all teh way up to Monterey - quite a jump.
Also, El Capitan uses the HFS+ file system and after High Sierra the file system switched to APFS, so you might want to stage multiple updates to minimize the risk of multiple major changes going wrong. I'd probably go El Capitan to High Sierra or Catalina, then go to Monterey from Catalina.
Definitely back up your Mac before updating. El Capitan is the original OS for that model and you can update all teh way up to Monterey - quite a jump.
Also, El Capitan uses the HFS+ file system and after High Sierra the file system switched to APFS, so you might want to stage multiple updates to minimize the risk of multiple major changes going wrong. I'd probably go El Capitan to High Sierra or Catalina, then go to Monterey from Catalina.
No, updating the software on your Mac will most probably not lead to data loss.
However I do recommend backing your Mac up before the update:
How to back up your Mac - Apple Support
Note that if you upgrade to Catalina or later,
If you upgrade to Monterey, you won't have the latest version of Safari – but you will have a fairly recent one, and it will also be possible to run current versions of third-party browsers (e.g., Firefox).
Updating from El Capitain
