How do I reboot my MacAir after disk replacement?

Question

macOS

Apple's operating system for its Mac desktop and portable computers.

crwdns2934065:0crwdne2934065:0: 1

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I just went through the step by step instructions for replacing the HD in my MacAir. Now how do I boot the computer with no external drive?

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crwdns2934065:0crwdne2934065:0: 31

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crwdns2933897:0crwdne2933897:0

Try the following:

Press the start button

and immediately press the: O+F+Command+Option keys, all at the same time,

and HOLD them until the Terminal screen appears.

This will have some lines of text, with a flashing cursor at the end.

Type in "boot_mac" (without the quote marks), and press Return/Enter key.

The normal startup screen should appear.

Hope this helps, Regards, Karel

crwdns2934105:0crwdne2934105:0

crwdns2889612:0crwdne2889612:0 0

crwdns2944067:03crwdne2944067:0:

Addition!! The "boot_mac" must have the " _ " dash between boot and mac at the bottom, not at the centre of the line.

crwdns2934271:0N'w 27, 2012crwdnd2934271:0 Karel Diblicek crwdne2934271:0

ADDITION AGAIN!!!!! IF THE ABOVE DOES NOT WORK:

Instead of "boot_mac" , use "mac-boot". Done all this a long time ago and forgot

the exact word order. Sorry.

crwdns2934271:0N'w 27, 2012crwdnd2934271:0 Karel Diblicek crwdne2934271:0

Thank you so much for your inputs, when I do that all I get is a flashing "file folder" and no terminal screen. Have I screwed it up?

crwdns2934271:0N'w 28, 2012crwdnd2934271:0 theherm11 crwdne2934271:0

Addition!! The "boot_mac" must have the " _ " dash between boot and mac at the bottom, not at the centre of the line. — Karel Diblicek
ADDITION AGAIN!!!!! IF THE ABOVE DOES NOT WORK:

Instead of "boot_mac" , use "mac-boot". Done all this a long time ago and forgot

the exact word order. Sorry. — Karel Diblicek
Thank you so much for your inputs, when I do that all I get is a flashing "file folder" and no terminal screen. Have I screwed it up? — theherm11