Both Windows and Mac OS offer built-in disk formatting tool. For Windows, it offers quick format feature when you right-click the hard drive on the computer. If you are using a Mac, you can run the built-in Disk Utility to quickly format a hard drive or external hard drive under Mac OS.
This article describes how to do an initial flash or a TFTP recovery flash for your device. Unplug the router, get a TFTP client for the PC, and connect it via network cable to a router LAN port; Set a fixed IP address on the PC with the same network as your router, e.g. Router: 192.168.1.1, PC: 192.168.1.2; Get a known good DD-WRT release.Use the SupportedDevices, the device wiki. Repair a storage device in Disk Utility on Mac. Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.
Before you start, check the version of Safari running on your Mac. To display the version number, choose Safari > About Safari.
- If your Safari version is 11.0 or later, follow the steps in For Mac OS X 10.11, macOS 10.12, and later.
- If your Safari version is 10.0 or later, follow the steps in For Mac OS X 10.10.
Flash Utility For Mac Catalina
Note:
Apple Safari version 14, released for macOS in September 2020, will no longer load Adobe Flash Player or play Flash content. Please visit Apple’s Safari support for more information.
Click the Websites tab and scroll down to the Plug-ins section. Locate the Adobe Flash Player entry.
Select a setting to use for Flash Player when you visit other websites.
You can configure Flash for individual websites (domains). Select a website listed in this window, and choose Ask, Off, or On.
Exit Preferences after you finish configuring Flash Player.
Note:
If you are viewing Safari in full-screen mode, mouse over the top of the browser screen to see the menu.
Click the Security tab. Ensure that Enable JavaScript and Allow Plug-ins are selected. Click Plug-in Settings.
From the When visiting other websites menu, choose On, and then click Done.
Disk Utility User Guide
Disk Utility can fix certain disk problems—for example, multiple apps quit unexpectedly, a file is corrupted, an external device doesn’t work properly, or your computer won’t start up. Disk Utility can’t detect or repair all problems that a disk may have.
If you run First Aid on a disk, Disk Utility checks the partition maps on the disk and performs some additional checks, and then checks each volume. If you run First Aid on a volume, Disk Utility verifies all the contents of that volume only.
In the Disk Utility app on your Mac, choose View > Show All Devices.
Note: If you’re checking your startup disk or startup volume, restart your computer in macOS Recovery, select Disk Utility in the macOS Utilities window, then click Continue. If you check your startup volume (Macintosh HD), make sure you also check your data volume (Macintosh HD - Data).
In the sidebar, select a disk or volume, then click the First Aid button .
If Disk Utility tells you the disk is about to fail, back up your data and replace the disk—you can’t repair it. Otherwise, continue to the next step.
Click Run, then click Continue.
If Disk Utility reports that the disk appears to be OK or has been repaired, you’re done. You can click Show Details to see more information about the repairs. Otherwise, you may need to do one of the following.
If Disk Utility reports “overlapped extent allocation” errors, two or more files occupy the same space on your disk, and at least one of them is likely to be corrupted. You need to check each file in the list of affected files. Most of the files in the list have aliases in a DamagedFiles folder at the top level of your disk.
If you can replace a file or re-create it, delete it.
If it contains information you need, open it and examine its data to make sure it hasn’t been corrupted.
If Disk Utility can’t repair your disk, or you receive a report that the First Aid process failed, try to repair the disk or partition again. If that doesn’t work, back up as much of your data as possible, reformat the disk, reinstall macOS, then restore your backed-up data.
If your Mac has a Fusion Drive and you see a flashing question mark or alert, see the troubleshooting section of the Apple Support article About Fusion Drive, a storage option for some Mac computers.
If you continue to have problems with your disk or it can’t be repaired, it may be physically damaged and need to be replaced. For information about servicing your Mac, see Find out how to service or repair your Mac.