Mojave; File System & Update Questions

Discussion in 'macOS Mojave (10.14)' started by Apple_Glen_UK, Oct 8, 2018.

  1. Apple_Glen_UK macrumors regular

    Apple_Glen_UK

    Joined:
    Oct 26, 2015
    Location:
    West Sussex, England
    #1
    I’m mulling over whether to upgrade from Sierra to Mojave and have read the various opinions of people on here. There are a couple of things which I’m uncertain on – any advice/clarification would be most welcome:

    1 - As I’m currently on Sierra (not High Sierra), I assume my file system is HFS+. I know nothing about this system or the APFS one, although if I upgrade to Mojave it will be APFS I understand. I’m unsure of the difference and – if I do upgrade – will I notice any changes to the documents currently stored on my Mac?

    2 - I appreciate that the Mojave GM version has only just come out, but does anyone have any idea on when the .1 update is likely to be? I’ve only had a Mac for a few years and am unsure when this could be.

    Thanks and apologies if these matters have been covered elsewhere on here.
     
  2. oatman13 macrumors regular

    Joined:
    Feb 14, 2013
    #2
    If you are currently on Sierra (10.12.x) then yes you are definitely running HFS+. APFS brings basic improvements to atomic write operations; which means if your machine shuts down during a writing operation, your filesystem won't become corrupted. APFS also supports space sharing, which is the notion that you can have multiple volumes under one partition. Since the volumes space-share you can create a 10000 of them and they won't take up any space. High Sierra had issues with Fusion and HDD performance, however in Mojave those issues have been addressed.

    I'd strongly encourage you to update to Mojave; this OS has been one of Apple's better OSs thus far. Although you may be waiting for 10.14.1; I believe you'll have no issues upgrading to 10.14 GM.

    And if you hit a problem (unlikely), the friendly folks on this forum will be glad to help! :)
     
  3. CoastalOR macrumors 68020

    CoastalOR

    Joined:
    Jan 19, 2015
    Location:
    Oregon, USA
    #3
    I would expect the 10.14.1 release to be the end of October.

    Here is the recent history of Apple .1 releases:
    Recent releases:
    10-21-2015 OS 10.11.1 released
    10-27-2016 OS 10.12.1 released
    10-31-2017 OS 10.13.1 released
     
  4. golfnut1982 macrumors regular

    golfnut1982

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    Oct 12, 2014
    Location:
    Chicago, IL
    #4
    I am very pleased with Mojave right now. Updated from Sierra.
     
  5. ApfelKuchen macrumors 68030

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #5
    If you're concerned that the file system change will somehow modify your documents; no, you won't see any changes to the content/appearance of your files. The file system underlies the files themselves - how the system handles read/write operations in order to minimize the possibility of data loss, for example. If you imagine your HDD to be a physical filing cabinet, the file system is the rules and business procedures that determine how a file clerk manages the contents of that filing cabinet. The documents that are stored in the filing cabinet are not affected by those rules and procedures.
     
  6. Apple_Glen_UK thread starter macrumors regular

    Apple_Glen_UK

    Joined:
    Oct 26, 2015
    Location:
    West Sussex, England
    #6
    Thanks for all the info - really appreciate it and it's a big help. My biggest concern was that the new file system would alter things in a big way, and I'm not great with change! I will probably wait until the .1 release and update to Mojave then.
     
  7. mtbdudex macrumors 68000

    mtbdudex

    Joined:
    Aug 28, 2007
    Location:
    SE Michigan
    #7
    I've got a Late 2015 5k iMac 4GHz 27"i7, 3TB Fusion hybrid drive, currently on High Sierra, does this fix the fusion drive formatting issue??
     
  8. Howard2k macrumors 68020

    Howard2k

    Joined:
    Mar 10, 2016
    #8

    I have a 2015 13" and did a clean install of Mojave.
    Overall it's been great, but the Sleep functionality was reduced in High Sierra and is incredibly even worse in Mojave.
    My Samsung printer/scanner is also not working yet.


    It's certainly more stable that High Sierra was for me, but I'm very disappointed in the sleep issues.

    It doesn't seem to affect everyone, but there are a few posts about it.
     
  9. mtbdudex macrumors 68000

    mtbdudex

    Joined:
    Aug 28, 2007
    Location:
    SE Michigan
    #9
    ahhh, printer drivers ..... ok I'll wait and see since my kidos needs to print sometimes for school
     
  10. Apple_Glen_UK thread starter macrumors regular

    Apple_Glen_UK

    Joined:
    Oct 26, 2015
    Location:
    West Sussex, England
    #10
    Interesting.

    Ok; one more question. If (when) I upgrade to Mojave, will it be possible to roll back to Sierra if I am not happy with it? I know this is not what Apple wants, but is there somewhere - a link or something - where I would be able to downgrade to Sierra again?
     
  11. Howard2k macrumors 68020

    Howard2k

    Joined:
    Mar 10, 2016
    #11

    Yeah, just restore from a backup.
     
  12. hassel macrumors member

    Joined:
    Oct 18, 2016
    Location:
    Narnia
    #12
    you could make a bootable Sierra usb stick

    that way you can always go back to a stable os
     
  13. fourthtunz macrumors 65816

    fourthtunz

    Joined:
    Jul 23, 2002
    Location:
    Maine
    #13
    I'm on Siera and am looking to upgrade to Mohave..will I have any problems going back and forth with external drives
    that are formatted to HFS+ ?
    Wondering about old Protools Sessions and such..any problems?
     
  14. ApfelKuchen macrumors 68030

    Joined:
    Aug 28, 2012
    Location:
    Between the coasts
    #14
    There shouldn't be any issues. Mojave still supports HFS+ drives (among other formats).

    Mojave can read and write to APFS, HFS+, FAT32, and ExFAT drives. It can read (but not write) NTFS.
     
  15. fourthtunz macrumors 65816

    fourthtunz

    Joined:
    Jul 23, 2002
    Location:
    Maine
    #15
    Thank you! Just thought I would confirm that! Have a great weekend!
     

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14 October 8, 2018