1
vote
2answers
43 views

How do I remount USB Flash Drive or SD card?

I noticed that I could remount my USB hard drive through terminal after I eject it by typing diskutil list to find the drive and diskutil mountDisk /dev/disk"X"... So I tried to do the same with my ...
0
votes
0answers
40 views

Files seem corrupted after transfer from usb drive

I recently switched Macbook so I transferred the files from my backup to my new computer, but it seems most of the files are corrupted. A few mp4 files aren't corrupted but everything else is! ...
5
votes
1answer
224 views

Unable to format pendrive, diskutil error

When I insert my USB Pendrive in my iMac i see this message: I tried to format it both with DiskUtility and with diskutil command in terminal but I get this error: iMac:~ User$ diskutil eraseVolume ...
0
votes
1answer
60 views

USB drives connected to hub disppearing

I've got four external USB drives connected to a 7 port powered dlink hub. All of them are externally powered, save for one of them. The hub is connected to a late 2012 Mac Mini. If I connect the ...
0
votes
1answer
351 views

diskutil eraseDisk results in Error: 12: POSIX reports: Cannot allocate memory

I'm trying to format my usb drive that is partitioned with FAT32 by the following command in Terminal: $ diskutil eraseDisk JHFS+ UntitledUFS disk1 However, I get this output: Started erase on ...
2
votes
2answers
909 views

What is the real working method of making a bootable usb drive?

Always when I need to make a bootable usb drive on a mac I struggle, I end up switching to windows because none of the below works for me, I'm using MacBook Pro: running sudo dd if=Debian.is ...
1
vote
3answers
796 views

Write .iso to USB on Mountain Lion [closed]

I'm trying to create a bootable USB for Windows using Disk Utility on OS X 10.8.4. Downloaded CentOS 6 for 32-bit and tried to use Disk Utility to create a bootable USB drive. This method failed with ...
2
votes
0answers
263 views

How do I write-protect a partition of a USB drive on OSX that can work cross-platform?

I bought a bunch of USB sticks that I want to give as a gift to friends and clients, with some files on them. I'd like to have the files non-erasable (though I realise they can format the drive, I ...
2
votes
2answers
3k views

USB drive stuck on read only

So my usb drive is stuck on read only and I have tried many different options which I have gotten from different websites. I have tried to restore/erase in disk utility but the options are greyed ...
0
votes
3answers
1k views

Unable to eject or erase USB drives

I'm unable to eject USB drives. When I try, I get this error: The disk "Untitled" wasn't ejected because one or more programs may be using it. To eject the disk immediately, click the Force ...
1
vote
1answer
2k views

Unable to adjust partition of USB drive with Mountain Lion Disk Utility

I have a 500 GB USB drive, which I once partitioned into two parts: one encrypted—Mac OS Extended (Journaled, Encrypted), and the other not—Mac OS Extended (Journaled). Now I want to change the ...
2
votes
0answers
155 views

How do I format an encrypted Integral Secure Key?

I just bought an Integral Secure Key from the Apple store but am fed up with having to use its own software just to transfer files to it as it does not appear as a normal USB drive in Finder. How can ...
1
vote
0answers
264 views

Install knoppix on usb with disk utility?

I have downloaded the linux distro knoppix. I have snow leopard and i want to make a bootable usb with the above distro with the disk utility. I put the source to be the iso of the distro and ...
0
votes
1answer
1k views

Can't restore image to USB stick

When I try to restore, I get message: Could not validate source - Operation not supported haven't seen anything like this on the web
0
votes
1answer
862 views

USB pendrive/disk formatting clarification

I have three doubts regarding USB pendrive formatting. 1) Is there is any simple/quick way to format the USB pendrive from MacBook Pro? Now, I am doing this by Applications/Utilities/Disk Utility ...
1
vote
1answer
785 views

Ejecting USB drive via AppleScript does not make drive power down

On startup, I eject my external USB disks with the following AppleScript: try do shell script "diskutil eject \"/Volumes/USB Backup\"" end try This works as expected: the drive powers down. ...
0
votes
0answers
148 views

Ubuntu Disk isn't showing up at Boot

I recently installed ubuntu on a flash drive, following all of the instructions on the ubuntu website. When I started up my mac, it didn't appear in the boot menu. Has this happened to anyone else ...
4
votes
3answers
1k views

How to create a bootable USB drive for Disk Utility?

Disk Utility says my boot drive need repair. Unfortunately my DVD drive is toast, so I can't boot from the install DVD and make the repair. Is there a way I can create a bootable USB drive and ...