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43

I blew hard in the SD card hub. Now it is working fine.


22

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 ...


13

Slide the read/write lock to the middle neutral position and retry. I have the same problem sometimes...


11

Selecting "MS-DOS (FAT)" will automatically format as FAT16 or FAT32 depending on the target's size.


11

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.


9

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.


7

In my case, a physical misalignment is causing the read only status. Gently pushing the disk away from the display reliably makes my cards write again.


6

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 ...


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

I successfully used TestDisk to get photos back from an SD card.


5

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 ...


4

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


4

Check out this low profile micro SD card reader for the Raspberry Pi computer: http://www.adafruit.com/products/966 $6 versus $25 for the Kickstarter polished Nifty Drive (I actually bought one for a friend).


4

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] ...


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 ...


4

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.


4

for me sticking the SD card in and pulling it a bit out again ( just a few mm ) seems to get it mounted. There's even a video that explains how to put it in and pull it out a bit here But I find that putting it in under an angle works better: Sticking the card in under a angle with the cut off corner against the top of the SD slot and then pushing the ...


4

You can: Get a piece of card / paper Cut it out into an L-Shape and fold the _ of the L in half Get somebody else to hold the computer up so that the CD drive is facing down Put the piece of paper into the CD drive from the top and slowly, bring it down When you reach the bottom of the drive, pull the paper out, gently and slowly. The SD card should come ...


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

The following procedure should format your SD card to make it usable again and cause bad sectors on the card to be remapped if that is part of your problem. Warning, erasing the wrong drive could make you cry so make sure that you know what you are doing. Before inserting the SD card into your Mac, make sure that the write protect (lock) switch is turned ...


3

I think the Nifty MiniDrive might be exactly what you're looking for: http://www.kickstarter.com/projects/1342319572/the-nifty-minidrive


3

You can't do that as neither, OSX nor W7/W8 support booting from an SD card. Get a simple usb-sd card adapter (not a multi card reader) and that'll work. In fact its what i used a micro-sd card in a usb adapter with an old 8gb card.


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

As mentioned in my original question, the SD Association (of which Transcend are a member) cite performance impacts as a reason against using standard drive formatters. However, they have a formatter available for download at https://www.sdcard.org/downloads/formatter_4. On Mavericks, I reformatted my drive using this utility and recopied my files. The ...


3

Most Android phones format exFAT SDcards incorrectly, the BlackBerry Priv being the only one I know that does it correctly. All other Android devices create a partition of type 12 (sometimes referred as hexadecimal "c") instead of 7. The android device actually ignores the partition type, so if you set it to 7 then the sdcard will work fine everywhere. There ...


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

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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