Devices that use the Universal Serial Bus data interface

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Making a bootable USB OS X Installer from iso on Linux

I followed the procedure for using dd to put an OS X iso on a USB stick from Linux that is described here. The problem I'm having is that my Late 2006 Intel MacBook does not recognize the USB stick at ...
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External drive HD WD 3T My Passport with Mavericks suddenly unmounts

I've a problem with my external hard drive, a Western Digital 3TB, with my Mac running OS X 10.9, Mavericks. When my hard drive is linked to my MacBook Air and, I work with it, the drive suddenly ...
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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 ...
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1k views

iPad USB flash drive file transfer

Can I use a 30 pin to USB adapter to connect a USB flash drive to an iPad and transfer arbitrary files back and forth? please address specifically: Can ANY file be transferred? Not just Image or ...
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634 views

iPhone 5 USB Audio

I've been reading up on the Lightning cable, and there's been some debate over whether it transmits analog audio. I'm not sure how exactly the 30-pin connector works, or how the Lightning cable works ...
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2k views

Does a mac support UAS (USB Attached SCSI)?

Does a mac with USB 3.0 support UAS (USB Attached SCSI)? If it does, how can we enable it in OS X and bootcamp? I need better speeds for my external RAID.
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29 views

Updating to Snow Leopard through a USB optical drive

My optical drive on my Macbook Pro has gone out. I have a copy of Snow Leopard on a disc, if I borrow a USB optical drive, will I be able to install Snow Leopard and is this a reliable method? Thanks
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62 views

Multiple logitech keyboards with different keymaps?

I have this at work -- http://www.logitech.com/en-us/product/wireless-solar-keyboard-k750-mac and this at home -- http://www.logitech.com/en-us/product/k750-keyboard?crid=26&section=features ...
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6k views

WD Passport External USB Drive - Really slow on Macbook

I just got a Western Digital 2 TB "My Passport" USB drive and connected it to my macbook pro (it says it supports USB 3). But when I tried to copy my photo library it said it would take 40 hours? ...
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198 views

Can I replace my internal drive with a 320+ GB memory stick instead (MacBook Pro 13" c. 2009)

I'm currently only able to see my internal HDs for my MacBook Pro 13 c. 2009 by attaching them to a USB adapter cable external to my laptop. Drives are great - but either logic board or something ...
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349 views

Will upgrading to Mountain Lion allow USB Boot?

One problem I have with my 2009 MBP running 10.6.8 Snow Leopard is that I can't boot from USB (well, I can, but only OS X in certain formats). I would really like to be able to boot linux from USB at ...
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2k views

SSD in external usb 3.0 case not recognized

Mac mini 2009 Intel SSD 330 60 Gb IcyBox IB-AC603a USB 3.0 I can't see the SSD in Desktop nor in Disk Utility. I don't know what to do as it is said to be USB 2.0 friendly in case's documentation.
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824 views

USB device drawing too much power resulting in whining fan noise

I have suddenly started getting the error message and exactly the same time there is now a loud fan noise on the left side of my Mac Book Air. I have tried the safe boot mode I have seen on other ...
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1answer
1k views

Can't access USB hard drive plugged in to Time Capsule

I have the most recent 2 TB Time Capsule to which I connected (via USB) a 1.5 TB Seagate hard drive. I expect the hard drive to be visible under "Shared", but nothing appears, except the Time Capsule ...
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3k views

Printer and Scanner with Time Capsule

I have a multi-function USB printer, Brother MFC-8440. Before buying a Time Capsule it was connected to a USB port on the Mac. After purchasing a Time Capsule I attached the printer to the USB on the ...
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2k 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
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5k views

How can I boot a 2012 Mac Mini off of a USB thumbdrive with CentOS on it?

I have a 2012 Mac Mini running OS X 10.7.3. On another PC, I have created a USB boot disc with CentOS 6.2 on it. The goal was to install CentOS onto the Mini. The USB drive is MBR partitioned and ...
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135 views

I can never eject a flash drive on the first try. Why?

It may be that it is being indexed as a dot appears in spotlight. However, it doesn't matter how long the flash drive has been plugged in, nor the size of it, it will always fail to eject on the first ...
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2k views

USB thumbdrive plugged into Macbook Pro which instantly goes black, bricked?

New 2011 Macbook Pro 8,3 less then three months old, this is my first ever Apple product. I have an old USB thumbdrive I couldn't remember what was on it so I plugged it into the USB port nearest the ...
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160 views

How do you create an archive file which unarchives into the current folder?

At the moment, if I create a TAR or ZIP file foo.tar - containing multiple files and directories - when I double click on the archive it creates a folder foo containing all of the archived items. Is ...
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458 views

USB Lion Recovery Disk fails to boot

Per What's the best way to create a stand alone recovery disk for Lion?, I'm attempting to create a two-partition thumbdrive such that one of the partitions is the Recovery Disk created by ...
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My iPod can only charges with AC power, not USB

A repair company changed my charger port on my iPod Touch 5. Since then when I connect to AC, it charges perfectly but when I connect to my PC with USB, nothing happens. I tried with iPad: the cable ...
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Ipod touch 5g charges on plug but not usb after repair

So they changed my charger port in ipod Touch 5 because it was broken, when i plugged it to power it charged fine , but it doesnt charge when connected to usb, same cable, same compuer , with ipad ...
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19 views

Windows 7 on Virtual Box 5 not recognising USB 3

I have Virtual Box 5.0.2 on my Mac (El Capitan) running Windows 7. I also have the Virtual Box extension pack 5.0.2, which supposedly enables USB 2.0/3.0 ports, but I can't see my USB stick in Windows ...
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18 views

My Mid-2015 Macbook Pro no longer rapid charges my Nexus 6P over USB, why?

The USB3.0 ports on my mid-2015 Macbook Pro always charged my Nexus 6P "rapidly" (as reported by the phone), meaning at 2100mA+ or so. However, a couple months ago (around January/February), this ...
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10 views

FTDI USB device not removed after unplugging

I have an FTDI USB adapter for loading software onto Arduino's, but it comes with a slight problem. 90% of the time when I unplug the USB cable, the device is not removed as a USB device. It remains ...
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43 views

Turn off USB power on OS X/Mac Mini

I have a need to turn USB power off (and on) using a script or a piece of software. Ideally it should be possible to turn each port off/on separately, but also turning power off/on from all ports at ...
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26 views

USB Drive Size Lost After Formatting on OS X El Capitan

This is strange. I formatted my 16 GB USB drive on OS X El Capitan with FAT file system and it worked fine. However, same drive on Windows 7 PC shows only 200 MB of size. Where the heck other drive ...
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25 views

iMac A1208 - Mac OS X 10.4 Install Problem

I'm a French user and I have a iMac from 2006/2007. I have changed the logic board. It's ok, but i want to do a fresh install of OS, (10.4), but the optical disk is KO. I have the official CD (but it ...
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9 views

How do I prevent OSX from creating a network entry when I connect a USB serial device?

I use a lot of different USB serial devices. I'm now at the point where my Network Preferences panel takes minutes to open and more minutes to change profiles. Opening ...
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105 views

Automatic and Abnormal reboot after plugging an usb device

I have a Macbook pro (mid 2009, OSx 10.11.4). It has been already few days that I have the same problem: when I plug an Arduino into one of my two usb ports (no matter which one), the system crashes ...
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26 views

Format usb drive into ext4 and swap partitions

I have been trying to create a model of a passive WiFi tracker by following the steps given in the following link: http://edwardkeeble.com/2014/02/passive-wifi-tracking/ One of the steps requires me ...
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16 views

New USB Drive Cannot be accessed

Suddenly my PNY USB 3.0 Flash Drive has stopped working. It doesn't show up in Finder, Windows starts going crazy when I plug it in, Linux says the device could not be opened, and Disk Utility also ...
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21 views

How do I change the Hotspot timeout on my iPad Retina?

I can use my Ipad Retina (4th Gen, iOS 9.3.1) when plugged in via USB to tether the 3G connection. After it is plugged into USB, then I can see it shareable via wifi from other devices. (My Mac which ...
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1answer
30 views

How do I make my iPad Retina wifi hotspot discoverable (tethering 3G) when off and unplugged like my iPhone 6S?

I can use my Ipad Retina (4th Gen, iOS 9.3.1) when plugged in via USB to tether the 3G connection. After it is plugged into USB, then I can see it shareable via wifi from other devices. (My Mac ...
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23 views

External SSD not recognized after ejection or reboot

I have an USB external mechanical disk. It works fine, and I can remount it after ejection. Also, it is mounted automatically after a reboot, as it should be. I got an USB external SSD, too. It works ...
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31 views

iPad mini charging problems

What I have experienced about charging problems is that it is mostly because the cable is not genuine and for that reason the message "not charging" appears even though it is charging anyway. It is no ...
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41 views

Mac stops recognising USB devices shortly after reboot

My MacBook Air (OS X 10.11.4, 2013) stops recognising USB devices a short while after I reboot it. That is, any devices connected during or shortly after a restart will be recognised, but after a ...
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21 views

Time Machine Network Connected to USB Connected Hard Drive

I have a Seagate 2TB hard drive that I connected to my router and have been using for Time Machine backups for the past two years. Recently I have disconnected this hard drive and attached it ...
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1answer
24 views

How to automat the selection of usb disk based on size

I am trying to automate a process where teachers delete content on memory sticks with different name then put the right content back (same each time) and rename the memory stick to UDISK. I want to ...
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16 views

Is it dangerous to use an iMac with broken USB ports? Is there such a thing as Firewire or display-port to USB?

I've got a mid-2010 iMac, 21", i3 processor with 4gb RAM installed which has only one partially-usable USB port, which will power a 3rd-party mouse, wireless dongle, or a keyboard sometimes, but not ...
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33 views

Macbook Pro USB 3.0 ExpressCard snail slow

I have an old MacBookPro3,1 to which I've added an ExpressCard/34 USB 3.0 adapter. The card is recognised by OS X out of the box, but when I connect a device to it I can't talk to it unless I wait ...
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1answer
40 views

USB game controller not detected

Since upgrading my version of OSX, my computer no longer detects a USB game controller. I know the controller is in working order because my Linux machine can talk to it. I don't know which version ...
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7 views

What are the effects of the “Autolink to web” on OS X Mavericks?

I dug up a strange USB device from a pile of old boxes. I thought it was a flash drive, but it is not detected. The system report says that it is a "Autolink to web". What degree of control could ...
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47 views

macbook pro encounters prohibited sign while booting with USB

My macbookpro is completely empty and the only option that I have is just internet recovery. I downloaded el capitan and with help of the terminal in the internet recovery build a bootable OSX el ...
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1answer
44 views

Macbook Pro (Mid 2012) Not recognizing USB

Recently I downloaded VirtualBox to setup a Windows 10 Virtual Machine on my Macbook Pro. I bought a new 32gb PNY flash drive to boot Windows 10. Everything worked great until I shut everything down. ...
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1answer
78 views

Samsung V-Nand SSD 850 EVO 1TB not working

I have a Macbook Pro Medio 2012, 15 Inch Non Retina. It was running on a normal 750G HDD, but i wanted an upgrade, so i bought the Samsung V-Nand 850 EVO SSD 1TB. I created a Bootable El-Capitan USB ...
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1answer
30 views

Reformat iPhone as USB

Is it possible to erase and reformat an iPhone to be act as a USB? I've seen many apps that can store data and then you can access it, but is it possible to actually reformat the entire iPhone to ...
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22 views

Can data be recovered from a drive which was encrypted

I encrypted a USB drive of 16 GB few months back and stored files on it. Yesterday I destroyed its encryption using terminal diskutil cs list command without realizing that it had important data ...
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Can't boot from bootable Windows 10 USB?

I asked this question a little bit ago but it was on a guest account that I on longer have access to. So I'll ask again. I created a Windows 10 installer USB using hdiutil convert and dd. Running ...