128GB sd card showing as 1gb in disk utility, when it shows at all

I have 10.8.2 on a 2011 mac air. i have a lexar professional 128gb 400x sdxc card which is full of stuff that I generally read (don't write much to the card when it's in) - big videos, big photos, by design & icon library, etc.
this morning at home I put some files on it, and closed the lid of the mac, then carried it to work. opening the lid and the device no longer shows. i had a system lock due to an app that does it regularly, so I power-buttoned it.
the device took 5-10 insertions to get it to even recognise that a card had been inserted. Disk Utility now sees the disk as an unformatted 1GB memory card, whereas it is in fact a 128 GB single partitioned MacOS formatted volume.
i don't have another mac to try this on, nor do I have another sdXc card, is there any debugging steps I should take to determine if it's the reader or the 2 month old card?
also, if it's fritzed, what is the best rescue utility for me to try?

I had tried a few different utilities under different conditions to see what was going on. These, in particular:
On Mac, I tried disk utility (of course), disk drill, lexar image recover 4, and the command line partition editor
I looked at it with partition editors on XP and Windows 7 on a new PC
I looked at it with partition editors and recovery tools on Ubuntu on a laptop with SDXC card support
Basically the unit seemed to just be wrong. And then I found a forum (no longer know the link) that mentioned that when the partition map of a sdXc card is messed up, you're pretty much out of luck with it. I think this is what happened. Eventually I managed to convince the memory company I got it from to give me a replacement under warranty, and the replacement had been so-far-so-good.
I lost everything on it, after trying for weeks to recover it.
Warranty might be your best option, I'm afriad.

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Hi Everyone!
mid-2012 15" rMBP
2.7 GHz i7
16 GB 1600 MHz DDR3
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Installed Yosemite about 2 weeks ago. So far things have been fine.
Just this morning tried reading a Nikon formatted Sony Class 10 (40MB/s) 16 GB SD card through the internal SD card reader - and nothing happened. After some poking around I noticed that the SD card is recognized by both the Disk Utility and the System Software, but not by Finder. The SD card will not mount.
It is not the SD card because it will mount on my buddies MBP running Mavericks (I had to upload the photos through Dropbox off his MBP).
I have already tried resetting both the PRAM and the SMC - it did not change anything. The system would still not mount the SD Card.
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Check this out:
Anyone have any ideas?
THANKS IN ADVANCE!!!

Re: SD Card not working on Yosemite
Reset NVRAM/PRAM
Reset SMC

External USB Drive hangs Disk Utility when trying to Format

Hello Everyone,
I have a Maxtor DiamondMax 10 300gig hard drive in an enclosure connected to my iMAC via USB. The drive was previously used on an Win XP pc and worked fine. I want to format it and use it as a backup for my MAC. When I plug in the drive, OS X says that it can't read the drive and asks if I want to initalize it. I go ahead and select 1 partition Extended Journaled and hit go. The Maxtor spins up for a few mins and then the colour wheel shows up and the Disk Utility shows not responding and the light on the Maxtor goes off. I have to force quit to get the Disk Utility to shutdown. I can format and parition the drive no problem on the XP pc. Any help would be greatly appreciated.
Rem

I also had a problem initializing and partitioning a new Seagate Barracuda 400GB drive with the NexStar GX (NST-370GX) external USB enclosure as described above. Neither my G4 MacBook Pro or my Mac Mini Dual core could initialize or partition the enclosure/drive. I could however hook the enclosure up to my XP machine, format it using NTFS, and access (read) the drive on my Mac Mini just fine. I didn't check it on the laptop though after formatting it using XP. This still was unacceptable.
After doing some searching online, I discovered this post on 123macmini.com:
http://www.123macmini.com/forums/viewtopic.php?t=2629
where the post points out that the NexStar GX enclosure is a rebranded Macpower M9-LX. Then I discovered on the Macpower site:
http://www.macpower.com.tw/products/hdd3/m9/m9lx
that the enclosure is not compatible with any Seagate Barracuda drive greater than 160GB. Doh!
After swapping out the Barracuda drive for a 300GB Western Digital drive I could then initialize, partition, and use the enclosure on my Mac Mini without any problem.
I was using OSX 10.4.7
I hope this helps others out there with the same configuration.
Ctut

Can't locate disk (using Disk Utility) when reinstalling OSX v10.2

Having problems after wiping drive and reinstalling - Disk Utility & Installation do not show a drive for the machine. Viewing other posts suggest clicking on Erase tab and selecting MAC OS Extended - but the drop-down box is greyed out with MAC OS Standard displayed. Tried to use Disk Warrior but nothing displayed when I booted up from the CD. Is this an indicator that my drive needs replacing? Machine is old - G4 /450, and can't remember if I used the old software or Tiger with the previous installation.
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do you have your original mac install disks? try to use the apple hardware test program...it will check the main hardware and if there are hardware failures with your HD, or other components it'll give you heads up.
also post this question in the powermac G4 forum, might get more bites since this is the G4 MDD forum.

Hard disk doesn't appear in disk utility when booting from dvd only via usb

i put a new hard disk (wd3200bevt) in my macbook white and my macbook pro 2.4 (not alu). when i boot from the dvd (10.5) disk utility doesnt find any disk. when i boot from an usb stick with leopard on it then it found the disk and i can install the system. when the system is installed and the books can boot the installed system anything looks fine, but when i boot from the original dvds disk utility doesn't find any hard disk once more.... when i boot from my usb stick it shows the new disk in disk utility. what is the problem when i boot from dvd?

don't know but try two boots in a row. worked for me.

Mac OS 10.5.6 downloaded Firefox 3.6.13 Came as .dmg When I try to launch it says "Not Recognized". Right click for "Open With" refers me to Disk Utility when same results "Not Recognized"

About my Mac > G5 Desktop OS 10.5.6
Want to upgrade to Firefox 3.6.13
The download comes as a compressed file in .dmg format. When I attempt to launch the .dmg file to decompress I get a error message that says: The following disk images failed to mount: Image > Firefox 3.6.13 Reason > Not Recognized. When I right click to see what opening app it is directed to it says: Open with "DiskImageMounter (default). Disk Utility is offered as another opening resource when I direct the file to Disk Utility and go to Menu Bar select "File" then select "Open Disk Image" (or Cmd + "O") I get the same result. Have tried downloading the file twice more and get the same results

Vk2mh it sounds like the download was not complete or corrupted. Where are you downloading the update from? Have you tried downloading again?

Why can't I select Disk Utility when I start in recovery mode?

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The menu comes up, but I can't select any of the options or the continue button. I can move the arrow by moving my finger on the touch pad, but nothing is touch sensitive.
The menu box has a blue line around the inside of it when it comes up, as though it has been selected. I'm not at means anything.

Getting out of disk utility when you want to restore your Mac???

I wanted to restore my Macbook Pro early 2011, so I shut down my computer then turned it on and held down option. I got to the disk utility app but now I'm having second thoughts about restoring it. I can't get out of disk utility and get back to my homescreen... Any help? It's been irritating me a lot.

If you've erased everything, then you need to reinstall OS X:
Quit DU and return to the main menu.
Reinstall Lion/Mountain Lion: Select Reinstall Lion/Mountain Lion and click on the Install button.
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because it is three times faster than wireless.

"Resource Busy" error during image creation,using disk utility when booting up from installation DVD

Hi all, first post to this community, wish all well
I have a MBP which is more than three years old, installed with OSX Leopard 10.6. Recently the MBP failed to to start and I tried to follow some articles online, including some from this community, to repair my disk, and more importantly, to backup data on the startup disk. But it does not work quite well so I try to seek some help here.
What I have done is to bootup with the installation DVD, try to verify and repair the disk using disk utility, which tells me it can't repair and recommend to backup, erase and reinstall. Am fine with this recommendation but now the problem is on the backup part. There are two partitons on this 500GB hitachi SATA disk. One is 300G which is for OSX itself, and the other 200G was partitioned for Time Machine. The repair failure is on the OSX partition which contains most of the recent data that I want to backup/restore. And unfortunately the Time Machine backup was stopped about two month ago, for some stupid decision I have made , while I am hoping to recover some data for the past month.
Currently the SMART status of the whole disk is verified, the OSX partition is unmounted with no details in the Available, Used, Number of Files, etc. From what I have researched (correct me if I am wrong), I highlight the OSX partition from the list on the left, click 'New Image' button on top, and select the destination to try to create an image of the current partition. But regardless of my desintation (Time Machine partition, or external USB drive), the imaging process always failed with Resource Busy error. Some online search suggest that the partition must be in unmount status but seems it does not apply to this case.
Would be really appreciated if anyone can give me some advice on what's the 'resource busy' error mean, how to backup the OSX partition, or what are the other possible alternatives.

Very poor idea to keep the Time Machine backup file on the internal hard drive. They should always be put on an external drive. As when the internal fails you lose everything. Which is what I suspect has happened.
More then likely your internal drive is failing. the only options to get a new internal drive and a SATA to USB adapter. Install the new drive inside the system abd install OS X on it. Then once that is finished and you are booting from it connect the old drive to the system with the SATA to USB adapter and copy your files off the old drive. That is if you can.

Possibly dumb Q: Running Disk Utility when booted from OSX Install DVD

Hey there Mac folks. I was wondering about this:
I'm running OSX 10.4.5 on a 2x2.0GHz G5 with 4 internal drives. (I stuffed 2 into the PCI bay with a G5Jam bracket kit.) I use Disk Utility v10.5.3, which is current for OSX 10.4.5, when doing basic maintenance/repair on my secondary drives, as well as to repair permissions and do a verify (but not repair) on my startup drive. When I have to do a repair on my startup drive, barring the use of other 3rd party apps, I have to boot from my OS 10.4 DVD, and use the Disk Utility there. However, since it's a 10.4.0, the Disk Utility there is v 10.5.0.
So, the question: Should I care? Any chance of a problem? I know the Disk Utility's repairing doesn't really care what OS, if any, is installed on a drive it's repairing (at least I think that's true?), but I have no idea what changes/improvemnts have been made to Disk Utility. Actually, I've always wondered about this sort of thing since OS 10.0.
I think I can make a copy of my Tiger install DVD with the newer version of Disk Utility inserted onto it, replacing the old one with v10.5.3. I don't know if it's worth the trouble though. I figure that for the newbie users, Apple would have thought of this, and addressed it if it were a potential problem. (Despite this Q, I'm not a newbie!)

Hi, JonYo.
Booting from your Tiger Install DVD to Verify or Repair your startup disk is fine. No worries!
The major changes in Disk Utility from 10.5 to 10.5.3 were:
• Better handling of overlapped extent allocation errors. Third-party utilities, such as Alsoft’s DiskWarrior may still be better at this task.
• The addition of live verification: the ability to Verify your startup disk while booted from such. One of the intermediate releases
The key point is to only use Tiger-compatible disk utilities with Tiger.
If you've implemented a proper backup and recovery solution where you are creating a bootable duplicate of your startup disk, you could also start up from the duplicate and run the latest version of Disk Utility on such to Verify or Repair your usual startup disk. For advice on the backup and recovery solution I employ, see my "Backup and Recovery" FAQ.
Computing without a comprehensive backup and recovery solution is like driving without auto insurance.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X
Note: The information provided in the link(s) above is freely available. However, because I own The X Lab™, a commercial Web site to which some of these links point, the Apple Discussions Terms of Use require I include the following disclosure statement with this post:
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

Shouldn't Disk Utility be able to repair all disk permission issues?

I am having some performance degradation issues on my 20 inch, 2.16 GHz Intel iMac so I tried to run repair disk permissions (after getting a clean bill of health from Verify Disk). The first two times I ran it, it must have made over 1000 repairs. I kept running it and it eventually got the number down to 29 to 30 lines in the repair log - but not without doing some peculiar things in the process. Subsequent runnings of Repair Disk Permissions report the same repairs - line for line - and I've run it at least 8 times now.
In the good old days, running Repair Disk Permissions would eventually give a clean bill of health. What gives?
Just for the fun of it, I ran Repair Disk Permissions on my brand new (relatively) 11" MacBook Pro. The log for the first run was at least a couple of hundred lines. The log for the second run was at least TWICE as long. I ran it two more times and - guess what - the repair log was almost identical to the log on my iMac, line for line. And additional runnings of Repair Disk Permissions didn't produce a different result.
I hope someone from Apple reads these posts because when things don't go right with their products and the tools they provide - more and more - don't work as expected, we have nowhere to turn to but to Apple to find a solution.
In the meantime, I would welcome any suggestions on what this all means.
Note: Both computer are running Snow leopard. The iMac has been updates to 10.6.8 and the latest Java update has been installed. The MacBook Pro is running 10.6.7 and has not had its Java updated. Both computers have 250 GB drives with at least 68 GB unused. The MB Pro has 4GB of RAM and the iMac 3GB.

Hate to burst your bubble but Apple does read these forums for problems.
Now that the others have replied that repairing permission is not the way to fix performance problems.
How much free space do you have on your system disk?
How large is your Desktop folder?
Either insufficient free space or an overly large Desktop folder can impact performance.
Allan

Partition with Disk Utility in 10.7, Lost All Data on Drive

All,
I partitioned a 2TB drive with DiskUtility. Partition 1: 1.99TB, Paritition 2: 1GB. Lost all data Partition 1. Two years of family photos, videos, business communications and files, time machine backups, are gone. What to do?
The solution I have so far: downloaded "Wondershare Data Recovery," followed instructions, it is scanning drive. Does anyone else have any experience with capabale softwares to use for this purpose? How about some professional data recovery centers accross the US where I can mail in my drive, and they do the rest?
In general, what do I do?
Stressed,
Sincerely,
A Man Made More Cautious

Try Data Recovery by DriveSavers | All Drives, RAID, SSD & iPhones. They tend to be expensive, and they make no guarantees.
Partitioning a drive is a destructive process that erases everything on the drive.

G4 won't boot from startup disk, disk utility can't repair, is all lost?

My G4 will not boot from the startup disk which is my second hard drive a 160GB. That's been my startup disk for the past 3 years. I tried running disk utilities, but get the error message "underlying task reported a failure on exit." "Invalid key length." "Volume check failed." "Disk repair failed."
I've tried loading in safe mode, and fsck (or something like that) nothing has worked. When I did force start by holding down the "x" key, the second hard drive image was on my desktop, but when I clicked it-it did not have any current information or files. Is everything lost? Is there a way to boot this hard drive or save all of my photos and music?
Thanks in advance for the help.

DiskWarrior can probably fix your problem. DiskWarrior by Alsoft
http://www.alsoft.com/DiskWarrior/index.html
 Cheers, Tom

Disk Utility - erasing the HDD, putting all to zero

Hi,
Ive heard that you should do this several times cause 1 time is not enough is this true?
Also, Once I've done this do I restart the computer, hold the C button and do it again or will I be automatically thrown into that Mac intro video?

Why do you want to erase the HD? The "zero data" option is a security feature, meant to make any data on the HD unrecoverable trough the use of specialized data recovery software. Normally, you would use this only if the HD was being sold or discarded to prevent someone from recovering any sensitive data it contains.
It has no other useful function. It does not 'put all to zero' -- it just writes binary zeros to data sectors, overwriting whatever was there, even if nothing was there to begin with. (Contrary to what some believe, a new drive is not necessarily uniformly filled with zero data bytes or any other specific data pattern when it leaves the factory. Mostly, it is just garbage, whatever is left over from the factory testing process.)
So there is no benefit in doing this even once unless you are doing it for security reasons. Moreover, there is some debate about the need to do one of the multi-pass secure erase options even for security reasons on any modern, high precision, high density drive you are likely to have. The 7 pass option is based on an obsolete U.S. Department of Defense (DOD) specification & the 35 pass one is intended to defeat the exploitation of a characteristic of much older drives -- they could not precisely keep the head in the center of the track, so it was possible to read residual data patterns from the track edges to recover them. Modern drives must very precisely position the head because track densities are so high, so it is extremely unlikely that much data could be recovered this way, & some experts estimate that it could take weeks or months to recover enough data using this technique to make it worth trying, even for the most valuable data.
So basically, unless your drive has sensitive data on it worth millions of dollars and might fall into the wrong hands there is no truth to what you have heard.
Regarding your second question, if you erase the drive (either normally or securely) there is no movie or anything else on it until you install it.

Formatting MicroSD card in Disk Utility-8GB card now showing as only 200MB!

Hi Guys
I want to give my sd card to a friend and so I tried to secure erase the data in disk utility and somehow managed to turn an 8gb card into a 200mb one while trying to format it to FAT format. This has happened to two 8gb cards from different manufacturers.
I tried to delete the partition and reformat the card to no avail. Even tried the solution here with no luck -
http://discussions.apple.com/message.jspa?messageID=11056512
I have extracted the log from disk utility when this happened (below) if that can give any clues
Thanks for the help!
2010-07-08 23:20:48 +0100: Mounting disk
2010-07-08 23:20:48 +0100: Erase complete.
2010-07-08 23:20:48 +0100:
2010-07-08 23:21:05 +0100: Preparing to zero disk : “UNTITLED”
2010-07-08 23:21:05 +0100: Passes : 0
2010-07-08 23:45:15 +0100: Secure Erase completed successfully in 24 minutes.
2010-07-08 23:45:15 +0100: Preparing to erase : “UNTITLED”
2010-07-08 23:45:15 +0100: Partition Scheme: GUID Partition Table
2010-07-08 23:45:15 +0100: 1 volume will be created
2010-07-08 23:45:15 +0100: Name : “UNTITLED”
2010-07-08 23:45:15 +0100: Size : 8.07 GB
2010-07-08 23:45:15 +0100: Filesystem : MS-DOS (FAT)
2010-07-08 23:45:15 +0100: Unmounting disk
2010-07-08 23:45:15 +0100: Creating partition map
2010-07-08 23:45:16 +0100: Waiting for disks to reappear
2010-07-08 23:45:16 +0100: Formatting disk1s2 as MS-DOS (FAT) with name UNTITLED
2010-07-08 23:45:17 +0100: 512 bytes per physical sector
/dev/rdisk1s2: 15313672 sectors in 1914209 FAT32 clusters (4096 bytes/cluster)
bps=512 spc=8 res=32 nft=2 mid=0xf0 spt=32 hds=255 hid=0 bsec=15343616 bspf=14955 rdcl=2 infs=1 bkbs=6
2010-07-08 23:45:17 +0100: Mounting disk
2010-07-08 23:45:18 +0100: Erase complete.
2010-07-08 23:45:18 +0100:
2010-07-08 23:51:47 +0100: Preparing to zero disk : “UNTITLED”
2010-07-08 23:51:47 +0100: Passes : 0
2010-07-08 23:52:05 +0100: Secure Erase skipped after 16 seconds.
24.5% complete.
2010-07-08 23:52:05 +0100: Preparing to erase : “UNTITLED”
2010-07-08 23:52:05 +0100: Partition Scheme: GUID Partition Table
2010-07-08 23:52:05 +0100: 1 volume will be created
2010-07-08 23:52:05 +0100: Name : “UNTITLED”
2010-07-08 23:52:05 +0100: Size : 209.7 MB
2010-07-08 23:52:05 +0100: Filesystem : MS-DOS (FAT)
2010-07-08 23:52:05 +0100: Unmounting disk
2010-07-08 23:52:05 +0100: Creating partition map
2010-07-08 23:52:05 +0100: Waiting for disks to reappear
2010-07-08 23:52:06 +0100: Formatting disk1s1 as MS-DOS (FAT) with name UNTITLED
2010-07-08 23:52:06 +0100: newfs_msdos: /dev/rdisk1s1: Permission denied
512 bytes per physical sector
/dev/rdisk1s1: 407120 sectors in 50890 FAT16 clusters (4096 bytes/cluster)
bps=512 spc=8 res=1 nft=2 rde=512 mid=0xf0 spf=199 spt=32 hds=32 hid=0 bsec=407552
2010-07-08 23:52:06 +0100: Mounting disk
2010-07-08 23:52:06 +0100: Could not mount disk1s1 with name (null) after erase
2010-07-08 23:52:06 +0100: Disk Erase failed with the error:
File system formatter failed
2010-07-08 23:52:06 +0100: Erase complete.
2010-07-08 23:52:06 +0100:
2010-07-08 23:52:06 +0100: Erase complete.
2010-07-08 23:52:06 +0100:
2010-07-08 23:54:41 +0100: Verifying volume “NO NAME”
2010-07-08 23:54:41 +0100: Starting verification tool:
2010-07-08 23:54:42 +0100: ** /dev/disk1
2010-07-08 23:54:42 +0100: ** Phase 1 - Preparing FAT
2010-07-08 23:54:42 +0100: ** Phase 2 - Checking Directories
2010-07-08 23:54:42 +0100: ** Phase 3 - Checking for Orphan Clusters
2010-07-08 23:54:42 +0100: 74 files, 203800 KiB free (25475 clusters)
2010-07-08 23:54:42 +0100: Repair tool completed:
2010-07-08 23:54:42 +0100:
2010-07-08 23:54:42 +0100:
2010-07-08 23:54:47 +0100: Verify and Repair volume “NO NAME”
2010-07-08 23:54:47 +0100: Starting repair tool:
2010-07-08 23:54:47 +0100: ** /dev/disk1
2010-07-08 23:54:47 +0100: ** Phase 1 - Preparing FAT
2010-07-08 23:54:47 +0100: ** Phase 2 - Checking Directories
2010-07-08 23:54:47 +0100: ** Phase 3 - Checking for Orphan Clusters
2010-07-08 23:54:47 +0100: 72 files, 203824 KiB free (25478 clusters)
2010-07-08 23:54:47 +0100: Volume repair complete.2010-07-08 23:54:47 +0100: Updating boot support partitions for the volume as required.2010-07-08 23:54:47 +0100: Repair tool completed:
2010-07-08 23:54:47 +0100:
2010-07-08 23:54:47 +0100:
2010-07-08 23:55:00 +0100: Preparing to erase : “UNTITLED”
2010-07-08 23:55:00 +0100: Partition Scheme: GUID Partition Table
2010-07-08 23:55:00 +0100: 1 volume will be created
2010-07-08 23:55:00 +0100: Name : “UNTITLED”
2010-07-08 23:55:00 +0100: Size : 209.7 MB
2010-07-08 23:55:00 +0100: Filesystem : MS-DOS (FAT)

Rednecs wrote:
I want to give my sd card to a friend and so I tried to secure erase the data in disk utility and somehow managed to turn an 8gb card into a 200mb one while trying to format it to FAT format.
2010-07-08 23:45:15 +0100: Partition Scheme: GUID Partition Table
That's probably not the best partition scheme for a FAT volume format. In the Partition tab set "1 Partition", then click the "Options" button and select "Master Boot Record".

128GB sd card showing as 1gb in disk utility, when it shows at all

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