River Mac OS
Free download River Levels River Levels for Mac OS X. River Levels - RiverLevels is a dashboard widget that provides an easy way to monitor the amount of water flowing in your favorite streams and rivers. This free Mac app was originally produced by Adam Franco. From the developer: RiverLevels is a dashboard widget that provides an easy way to monitor the amount of water flowing in your favorite streams and rivers. Operating System/360 R21.8 1972, August Bundled with hardware Proprietary: IBM mainframe: OS/390: IBM: 1995 MVS: OS/390 Version 2 R10 2000, September 29 Bundled with hardware Proprietary: IBM mainframe: OS 2200: Unisys: 1967 as Exec 8e Exec 8, OS 1100 CP OS 18 (Exec 49.2) 2018, July 18 Bundled with hardware Proprietary: Server Plan 9: Bell Labs. River is a utility helps Mac users to search for (and find!) torrent files. MacOS Catalina 10.15; macOS Mojave 10.14; macOS High Sierra 10.13; macOS Sierra 10.12; Mac OS X El Capitan 10.11; Mac OS X Yosemite 10.10; Mac OS X Mavericks 10.9; Mac OS X Mountain Lion 10.8; Mac OS X Lion 10.7; Mac OS X Snow Leopard 10.6; Mac OS X Leopard 10.5; Mac OS X Tiger 10.4; Windows Server. Windows Server 2019; Windows Server.
These key combinations apply only to Mac computers with an Intel processor, not Mac computers with Apple silicon.
To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.
If a key combination doesn't work
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If a key combination doesn't work at startup, one of these solutions might help:
- Press and hold all keys in the combination together, not one at a time.
- Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
- Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
- If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
- If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.
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Remember that some key combinations are disabled when your Mac is using a firmware password.
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- Keyboard shortcuts that you can use after your Mac has started up.
River Mac OS