How to Make a Bootable External Hard Drive, SD, USB, or DVD/CD

A simple tutorial on how to create a bootable partition on an external hard drive, sd card, or usb flash drive on Mac OS X for use with an iMac or Macbook. I used ScreenFlow to record and edit this video. Thanks for watching!

Category:

Entertainment

Tags:

• bootable hard drive
• bootable sd card
• bootable usb flash drive
• bootable mac
• os x
• mac os x
• apple
• iphone
• macbook
• macbook pro
• imac
• macintosh
• windows
• pc
• disk utility
• screenflow
• os x snow leopard
• leopard
• snow leopard
• how to make a bootable hdd
• hackthetouch

[WillyTheGuitarFreak]

I experience some troubleshooting when doing this...

I have a 400 GB usb external hard-drive with files already saved on it, and I want to make a partition within it.

So when I open up disc utility, selects the main source and hits partition and set volume scheme to current, the "blue area" showing space available does not appear and I can't click on the (+) sign to add a volume/partition. What's wrong?

The current format is MS-DOS (fat)... do I need to reformat it? And if so, will I lose files?

[HackTheTouch]

@WillyTheGuitarFreak Unfortunately you will have to format the drive, which will result in total loss of data. I'm sorry!

[wheredmyusernamego]

TechTipTuesday reminds me of thatsnazzyiphoneguy's TerminalTipTuesday

and thanks for the info :)

[HackTheTouch]

@wheredmyusernamego That's exactly what it was inspired by! I greatly admire Quinn's work; he's great at what he does. Thank you so much for watching! :)

[HackTheTouch]

Two people own PCs.

[GoRow247]

When I click "Apply" after clicking the little plus sign, naming the partition, etc., it says "Verifying disk" for a while (about 5 min) then an error pops up, "Partition Failed with the error: Could not modify partition map because filesystem verification failed." I've tried searching online, making the partition from the install dvd, and I've just done a fresh restore - literally just re-booted and have done nothing before trying to make this partition. What do?

[HackTheTouch]

@GoRow247 Try hitting "Repair Disk", then try again.

[olliekill]

thumbs up for the aston martin

[quirogapablo1]

Thank you! Very helpful video. I am trying to downgrade from OS Mountain Lion to OS Lion.

[invaderekim]

scratch that last comment... What i need help with is this---->

I'm trying to boot windows 7 .iso file.. its not letting me it says validation error.. im thinking because its not a DMG file.. how do i do this for a windows .iso? please help me Thanks!!

[invaderekim]

everything is greyed out after clicking on Paration tab. what can i do to get passed this? THANKS

[applemanipodmac]

@HackTheTouch will this work with a windows install cd and not a mac cd

[pgeske]

I'm using a usb, and it now appears as a cd with all the correct files in it, but it doesn't show up on the boot menu when i restart my computer.

[GOPACKERSJT]

Thanks!

[Maaarcus2]

When I click apply it loads for about 5 minutes then comes up with "Partition failed with the error:Couldn’t modify partition map because file system verification failed." what do i do? I tried repair disk and verify disk but it didn't work

[ABkabbani]

When I hit restore it says "Could not find any scan information. The sourse image needs to be imagescanned/scanned for restore."

Please help