Hi, Are you by chance able to boot into recovery? If so, you will want to enable the ability to boot from external usb drives. I am running into the same similar problem whare booting into recovery does not work.
Matthew -----Original Message----- From: macvisionaries@googlegroups.com <macvisionaries@googlegroups.com> On Behalf Of Greg Wocher Sent: Thursday, December 19, 2019 2:01 PM To: macvisionaries@googlegroups.com Subject: Re: Problems trying to create bootable USB Drive Hello, Well I downloaded install disk creator and it does have a much better interface than disk maker X. When I used it, it appeared to have worked. However when I go into system preferences/startup disk the flash drive is not listed. No matter what I do I cannot get this to work. I have a new flash drive on order from amazon that comes tomorrow. Both of the ones I have are older ones. They are USB 2.0 and 16GB. The new one is USB 3.1 and is 32GB. Anything else I can try while waiting on the new flash drive? Also if I do a restart and hold option down is there a way for me to tell if it did use the USB drive to boot? Thanks, Greg Wocher > On Dec 19, 2019, at 11:05 AM, 'E.T.' via MacVisionaries > <macvisionaries@googlegroups.com> wrote: > > I would suggest this app, Install Disk Creator insteaa of DiskMaker X. I > had trouble with that one so threw it out. Also, you need at least a 16gig > stick. > > From E.T.'s Keyboard... > ancient.ali...@icloud.com > Many believe that we have been visited > in the past. What if it were true? > > On 12/19/2019 7:16 AM, Greg Wocher wrote: >> Hello all, >> I have been trying for the last several days to create a bootable USB drive >> so I can do a clean install on my mac. I am using a 2015 MacBook air that I >> bought in 2016. It is running the latest version of Catalina. I am using a >> program called Disk Maker X to create the USB drive. I have used two >> different flash drives I own. After completing the process, neither flash >> drives are recognized as start up disks. I am not sure what I am doing >> wrong. Anyone have any advice on what I can try so I can get a bootable USB >> drive? >> Thanks, >> Greg Wocher > > -- > The following information is important for all members of the Mac Visionaries > list. > > If you have any questions or concerns about the running of this list, or if > you feel that a member's post is inappropriate, please contact the owners or > moderators directly rather than posting on the list itself. > > Your Mac Visionaries list moderator is Mark Taylor. 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