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10

Just ran into the same problem and it seems to be that /dev/disk* is slow because it is buffered. If you use the corresponding rdisk device (ex: /dev/rdisk1s1) you should get the speed you expect. This is apparently a BSD thing. Example: % sudo dd if=pi.bin of=/dev/disk1 bs=1m count=4095 ^C408+0 records in 407+0 records out 426770432 bytes transferred in ...


6

Do you happen to have the Android File Transfer application installed? Various users on macrumors have noted the same issue, and have narrowed it down to having AFT installed. I'm getting the same problem, and I too have AFT installed, but I won't be removing it any time soon as it's the only way to get anything to/from my Android devices.


5

This thread says that there's a switch in the SD card slot that detects when a card is inserted, and it can get clogged by dust or jammed or something. If you play around with a toothpick (or anything that fits in that hole), it'll fix your problem. Toggling that switch helps.


5

The "Camera Connection Kit" is called that for a specific reason. The USB and SD Card readers are meant to either directly connect your camera to it, or just the SD card from it. This means also that the readers only function with the Photos application, and nothing else. This is also the reason why most external keyboards don't work anymore. There is no ...


5

SD cards are categorized in different classes according to their speed. Generally, SD cards perform even slower than a normal HDD drive which is why I do not recommend using them as a major storage option. You should invest in the most expensive type of SD to have an acceptable I/O performance. E.g. an Ultra High Speed SD card (UHS) such as this one. For ...


4

Connect the memory card and launch the program Image Capture (found in the Utilities folder in both /Applications/ or in Launchpad, if you're running Lion. In the lower left corner of the screen, there should be a menu that says Connecting this camera opens...; from the menu, select iPhoto from the list. This should make iPhoto launch when you connect this ...


4

It appears to work according to several reports: http://www.zdnet.co.uk/reviews/ultraportables/2011/07/26/apple-macbook-air-2011-133in-40093522/ There has been some concern that Apple lists the MacBook Pro models on its web site as having an SDXC card slot, for high-capacity SD cards, and only lists the card reader on the Air as an SD card one. We ...


3

I'm currently installing Windows 7 from an 16 GB SD card. From a Windows computer, I prepared the SD card with WinToFlash and the ISO of Windows 7, and when it was done I mounted the SD card with a multi card reader, and Boot Camp read it!


3

Three things will need to come together for this to work: The Filesystem on the SD card needs a .fseventsd hidden directory and the system to track all changes (which typically gets created automagically when you format the card as HFS+) I haven't seen anyone hack Time Machine to back up filesystems that don't register with Apple's file system events API. ...


3

It could well be that the SD-card is that slow. Take a look at this benchmark (Random Write, 4 KB (QD=1) [MB/s]) and you will see that most SD-cards have a lousy write performance (below 100 kB/s) for small files - and a typical linux installation consists of a lot of small files been written to disk. The internal card-reader should be capable of ...


3

According to this discussion thread on Apple's forums, both 64 and 128 GB SDXC cards are well supported on the latest [mid-2011 at the time of writing] MBA, provided you format them using the Mac OS X Journaled option.


3

Open up a terminal and check out the following command: NAME newfs_msdos -- construct a new MS-DOS (FAT) file system SYNOPSIS newfs_msdos [-N] [-B boot] [-F FAT-type] [-I volid] [-O OEM] [-S sector-size] [-a FAT-size] [-b block-size] [-c cluster-size] [-e dirents] [-f format] [-h heads] [-i info] ...


3

I know this is an old question but I just found it via a Google search. Check out the Nifty MiniDrive which is exactly what you are describing. http://www.kickstarter.com/projects/1342319572/the-nifty-minidrive


3

Yes! You can change the volume from a removable device to a fixed disk by flipping the removable bit. Lexar made an application for Windows called 'Lexar BootIt', a well known application for this task. I found a solution involving DD, but I have not tested it and I'd severely recommend backing up your card before doing anything with DD/Terminal. I created ...


2

From this question on SuperUser, try MarcoPolo Or, you could use folder actions. From this tutorial: Go to File > Save As Plug-in. Choose Folder Action from the pop-up menu. In the Attach to Folder pop-up, select Other… In the resultant open dialog, hit cmnd-shift-g. This will bring up a small sheet labeled Go to the folder:. In this sheet, ...


2

Probably not, as the Apple iPad Camera Connection Kit is officially not supported on iPhone or iPod touch; and that would just give you the physical connection of your SD card to the iPod touch. To have direct access to the file-system of your SD-card you need a jailbreak. There is a slight chance you may get the Apple iPad Camera Connection Kit working on ...


2

Stuffe has given the correct answer. For other users I want to add the steps to create the volume: determine the device node: diskutil info /Volumes/NameOfVolume (/dev/disk1s1) Deaktivate the Volume with disk-util Create new Volume: newfs_msdos -F 32 -v NameOfVolume -c 1 /dev/deisk1s1 The cluster size -c 1 will create the size of 512 Byte


2

SleepWatcher works fine with Mountain Lion. I've written an extensive guide to address the exact problem to unmount and auto re-mount of SD Cards and any external HDDs using sleepwatcher. - http://www.atpeaz.com/index.php/2012/automaticlly-eject-external-disks-on-sleep-reconnect-after-os-x/


2

I've encountered the same. Ended up doing this: Backup the SD Contents Format the SD as FAT16 using Disk Utility and Terminal following these steps: Unmount (not eject) the SD from Disk Utility and copy the id (doing CMD+I on the SD and then selecting the Disk Identifier value (e.g. disk2s1)) Format to FAT16: sudo newfs_msdos -F 16 /DEV_PATH/TO_SDK so ...


2

This is partially inaccurate. You can actually install OS X on a SD card according to Apple's support documents. However, on Windows you can't. Can I install Mac OS X on an SD storage device and use it as a startup volume? Yes. Change the default partition table to GUID using Disk Utility, and format the card to use the Mac OS Extended file format ...


2

Yes - I install restore images and emergency boot images on to SD cards as a matter of routine. You should have no problems booting from these storage SD cards due to the SD card or the OS itself. They don't boot as fast as spinning hard drives in my experience as the cache there seems to do a better job than the controller on the cards. I generally get 60 ...


1

The problem spontaneously disappeared for me. I'm leaving this as an answer since it might reassure some people to know that for some random reasons, at some point, things start working again. However, I was not able to pin down a specific cause for it, so I'm not going to accept the answer, in case that at some point someone comes with a rational ...


1

If two cameras fail to erase the card, then something is almost certainly broken in the card. You could simply put the lens cap on and take enough black pictures to fill up the card. That is equivalent to secure erase / one pass as the old data will be overwritten. On the Mac side - your best bet would be to repartition the drive to APM or GUID so that the ...


1

If you can't erase the card from your camera does the camera at least recognize the card? Can you take a picture and have it saved to the card? If not the card may be damaged or your camera's card reader may be damaged. Either way, try putting the card in a card reader attached to your Mac's USB port (or if you have a later model MacBook Pro or iMac, in the ...


1

If the card is mounted with the sync option, this means every file close causes the write to be flushed to disk and thus your performance on small files will be terrible when compared with large files. If you remove the sync from the mount options, then there is no guarantee that writing a file causes it to go out to disk -- you have to manually call sync ...


1

Since the iPhone and iPod Touch don't have an SD card port or the inherent ability to mount a USB memory stick, you'll need to purchase 3rd party hardware (and potentially software) to transfer data to either of these media types without a computer. A Google search on the subject could help. I can't make a product recommendation, but one place to start is ...


1

It's true an SD is considerable slower then an external SSD via Thunderbolt or even USB 3.0. But, if you're just looking for a way to keep your internal SSD free of low speed data, like say an iTunes collection or iPhoto collection, then this idea works just fine. You don't even have to go crazy with UHS cards. Most type 10 cards with do just fine and ...


1

I think I may have figured it out. In Disk Utility while the SD card was plugged in I went to ##GB APPLE SD Card Reader Media Tab . The only thing I was allowed to rename was RAID, so I renamed it and literally all the grey-outs went away. Try it to see if this helps. But you should try the above Terminal solutions before this...


1

I recommend you insert it directly into a sd card reader attached to your Mac and backup the part of the drive you can access to your Mac's drive. Then open Disk Utility.app select the SD card reader in the left bar on the top level of the hierarchy (not the volume itself on the second level!), switch to the partition tab on the right hand, choose "1 ...


1

I encountered the exact same thing... the issue was that the lock switch was getting flipped when I pushed the card into the slot and it would flip back to unlock when I pulled the card out, lol. I was able to get it in without the switch flipping by pushing it to the opposite side of where the switch is.



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