A file format is a standard way that information is encoded for storage in a computer file.It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary or free and may be either unpublished or open. Some file formats are designed for very particular types of data: PNG files, for example, store bitmapped images using lossless data. Choose between the format APFS or Mac OS Extended format carefully. To find out the current format of the drive, you can look into the System Information. The file system column on the Storage sidebar displays the current file format. It is advised not to change the built-in APFS-format into Mac OS Extended under any situation.
Itâs almost become a tradition; one that we wish we didnât have to put up with. It seems with each new version of the Mac operating system, there are some features that just donât seem to work the way they used to. The tradition lives on with macOS High Sierra, so weâre gathering a list of what High Sierra broke and how to fix it (when you can).
Drive Encryption Can Change Formatting
Encrypting an entire drive to add a level of security has been an easy task in the Mac OS ever since FileVault 2 was released as part of OS X Lion. Full disk encryption has been a boon for Mac users who worry about their personal data being easily accessible on their Macs or external drives. This is especially true for portable Mac users, who need to worry about their Macs being lost or stolen.
macOS High Sierra continues to support full disk encryption, but Mike Bombich, who created Carbon Copy Cloner, has verified a bug in High Sierra that will cause an external drive to have its format changed from HFS+ to APFS when the drive is encrypted in High Sierra.
Enabling encryption on a drive should not alter the underlying drive format. If the drive was HFS+ (Hierarchical File System) before you chose to encrypt it, it should remain an HFS+ drive afterwards. The same is true for APFS (Apple File System) formatted drives; choosing the encryption option shouldnât change the APFS format of the drive.
Related:A Note On High Sierra Compatibility with Third Party SSDs
(Encrypting an external drive can lead to the drive being converted to an APFS volume.)
Under certain conditions, encrypting a drive will modify the format to APFS without the user being aware of the changes.
The specific conditions are:
If these two conditions are met, and you select the option to encrypt the drive, by right-clicking the drive icon and selecting Encrypt from the popup menu, the drive will be converted to APFS format and then encrypted.
Even though the drive has been converted to APFS and encrypted, it will continue to work just fine with your Mac running macOS High Sierra. The problem comes about should you ever connect the drive to a Mac running an earlier version of the Mac operating system, or if you boot your Mac to an earlier version of the OS. In either case, the external drive wonât be recognizable by the older operating system.
Our recommendation is not to encrypt your external drive, unless converting to APFS is acceptable to you, and you have no plans to use the drive with earlier versions of the Mac operating system.
Being Logged Out Randomly
If you find yourself occasionally being logged out of your Mac after you upgraded to macOS High Sierra, you can stop worrying; your Mac isnât possessed. Instead, the upgrade process may have enabled two security options that you may not have been using before.
To correct the phantom logouts, launch System Preferences, either by clicking on its Dock icon, or by selecting System Preferences from the Apple menu.
In the System Preferences window, select the Security & Privacy preference pane.
From the Security & Privacy preference pane, click the Lock icon and enter your administrator credentials. Once the padlock is unlocked, click on the Advanced button.
Either remove the checkmark from âLog out after xx minutes of inactivityâ or set the time frame to a longer period to meet your needs. Click the OK button when done.
The second security issue that may be causing the problem is also located in the Security & Privacy preference pane. Select the General tab.
The item: âRequire password xx minutes after sleep or screen saver beginsâ may also be checked. You can remove the checkmark, or modify the amount of time that needs to pass before the screen saver kicks in to better fit your needs. My own preference is to leave this security feature in place, and just adjust the time as needed.
While youâre at it, you may want to jump over to the Desktop & Screen Saver preference pane to adjust the time for when the screen saver starts up.
(Be sure to check the General tab of the Security & Privacy preferences for password requirements to wake from sleep. These may have also been changed during the install.)
Select the Screen Saver tab, then use the Start after: dropdown menu to select how much inactive time needs to elapse before the screen saver starts
High Sierra Battery Life is Poor
Another issue that seems to be common is portable Mac battery life being adversely affected after an upgrade to High Sierra. So far, it seems that macOS High Sierra isnât the culprit; instead, there are a few apps that may need to be updated to make better use of the battery.
Launch Activity Monitor, located at /Applications/ Utilities.
In the Activity Monitor window, select the Energy tab.
(Activity Monitorâs Energy tab can help you find apps gulping down the power from your battery.)
Video File Format
In the resulting display, look for apps that are marked as preventing sleep, or are listed as having a high energy impact. Contact the app developer to see if there are updates available for the app to make it perform better with macOS High Sierra.
Unable to Wake From Sleep
Iâm not sure what it is about sleep, but the Mac seems to always have issues with sleep after a system upgrade. There have been reports of Macs not being able to wake from sleep after upgrading to High Sierra.
Reformat my passport ultra. Unrelated, but with the same solution, is a flickering of the display, especially when the Safari browser is open.
You can fix both issues by resetting the NVRAM and then resetting the SMC.
You can find detailed instructions on how to perform these resets in the article:
How to Reset NVRAM, PRAM, SMC on your Mac.
Office 2011 Crashes
If youâre using Office 2011 for the Mac with macOS High Sierra, youâre not having any issues, youâre having occasional crashes, or Office simply refuses to launch at all.
That about covers most of the possibilities. The problem is Microsoft decided not to support Office 11 under macOS High Sierra, meaning they havenât tested the apps nor are they going to offer any updates to correct any issues. Essentially, Office 2011 is on its own. If it works for you, wonderful, but if you have any issues, it may be time to consider a replacement.
Of course, software apps do get old, and Office 11 has been around for a long time, in software years. If you have a specific need for Microsoft Office, the Office 2016 for Mac version works fine and is fully supported under macOS High Sierra.
If you just need a Word or Excel work-alike that you can use to share files with others, there are a few options available. If you have a suggestion that you know works with High Sierra, please leave a note in the Comments, below.
Mail Stops Notifying You of New Mail
Have you noticed that Mail is no longer alerting you of new incoming messages via the Notifications center? If youâre used to seeing a banner pop up in the top right corner of your Macâs display with a brief description of a new piece of mail whenever new mail arrives, you may have noticed the banners stopped once you installed High Sierra.
This bug doesnât seem to affect everyone, but it happens often enough that Apple should be able to fix the issue in a subsequent update of High Sierra.
But you donât need to wait for Apple; you can fix the issue yourself by opening System Preferences and selecting Notifications.
Highlight Mail in the Notifications window sidebar, and then select None as the Mail alert style. Wait a moment, then set the notifications style back to Banners or Alerts, whichever you prefer.
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Close the Notifications preference pane.
(The Notifications center may need its mail handling alert style reset to work properly after installing High Sierra.)
Launch Mail if it isnât already running. Mail notifications should now work correctly.
Adobe Photoshop and Illustrator Issues
Adobe Photoshop has a minor issue with High Sierra that prevents the Photoshop window from expanding to full screen whenever the Dock is shown.
Adobe has created a Photoshop plug-in file that can rectify the problem. Youâll find instructions on how to download and install the plug-in at the Adobe Help website.
File Format Excel
Adobe Illustrator is experiencing some issues with High Sierra; specifically, the licensing system seems to be broken when the startup drive uses the APFS file system. The result is Illustrator may not launch, or there will be an error message about license problems. Canon lbp 3050 driver for mac high sierra 10 13.
Adobe recommends not upgrading to High Sierra, or not converting to the APFS file system at this time.
What Is The File Format For Mac Sierra Pro
Thereâs an additional issue with Illustrator on macOS High Sierra that results in the wrong color settings being applied; specifically, Emulate Adobe Illustrator 6 becomes the default color setting and is applied to any document you open or new document you create.
The workaround is to manually change the color settings before working with any document.
Select Edit, Color Settings, and then choose the desired settings for the document.
Click OK.
Open the document you wish to work on.
Youâll need to repeat these steps each time you launch Illustrator, or before you open a document that uses a different color space.
Other High Sierra Problems and Fixes
macOS High Sierra is still relatively new, and I suspect there will be quite a few additional issues that will crop up. If you encounter any problems with using High Sierra, please feel free to share with our readers by leaving a comment.
If youâre having High Sierra install issues, you can leave a comment in the Rocket Yard guide: Common Problems During and After macOS High Sierra Installation.
[Update] Stay tuned for issues that you might encounter when running macOS Mojave.
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If you have an external hard drive or USB flash drive that youâd like to use on both Macs and Windows PCs, choosing the right file system to format the drive can be confusing. Learn a few ways to make your drive Mac and PC friendly.
Need to access or transfer files between Mac and PC? As simple as this task sounds, itâs not very straightforward for inexperienced users. Since Mac OS X and Windows use totally different file systems, the way a drive is formatted can determine what type of computer it will work with. In fact, there are four ways you can format an external or USB flash drive to achieve varying degrees of compatibility between Macs and PCs. Letâs take a look at them:
HFS+
Mac OS Xâs native file system is HFS+ (also known as Mac OS Extended), and itâs the only one that works with Time Machine. But while HFS+ is the best way to format drives for use on Macs, Windows does not support it. If youâre only going to be using your external or USB flash drive with certain PCs â such as at home or the office â you might be interested in a program called MacDrive. When you install MacDrive on a Windows PC, it will be able to seamlessly read & write to HFS+ drives. This isnât a good solution if you need your drive to work on any PC without installing software, though.
NTFSWhat Is The File Format For Mac Sierra 2017
The native Windows file system is NTFS, which is only partially compatible with Mac OS X. Macs can read files on NTFS drives, but it cannot write to them. So if you need to get files from a PC to your Mac, NTFS is a decent option. However, you wonât be able to move files in the other direction, from Mac to PC.
What Is The File Format For Mac Sierra 2017FAT32
The most universally supported way to format your drive is with the FAT32 file system. It works with all versions of Mac OS X and Windows. Case closed, right? Well, not so fast. Unfortunately, FAT32 is a very old file system and has some technical limitations. For example, you cannot save files that are larger than 4GB on a FAT32-formatted drive. This is a deal-breaker if you work with huge files. The other limitation is the total size of the partition. If you format your FAT32 drive in Windows, the drive partition cannot be larger than 32GB. If you format it from a Mac running 10.7 Lion, the drive partition can be up to 2TB. Much better, except for that pesky 4GB limit.
exFAT
The exFAT file system eliminates the two major deficiencies of FAT32: the largest partition and file sizes it supports are virtually unlimited by todayâs standards. Awesome, itâs perfect! Almost⦠since exFAT is fairly new, it isnât compatible with older Macs and PCs. Any Mac running 10.6.5 (Snow Leopard) or 10.7 (Lion) supports exFAT, while PCs running Windows XP SP3, Windows Vista SP1, and Windows 7 are compatible. If you know youâll be using computers running updated versions of these operating systems, exFAT is the clear best choice.
Format a drive using Disk Utility on a Mac
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