Why does my memory stick all of a sudden trigger the message "The disk you inserted was not readable by this computer"?

I bought a LaCie memory stick a couple of months ago. It worked fine. Now all of a sudden I get the message "The disk you inserted was not readable by this computer". What has happened? Is all my data lost? Can I retrieve it? I tried to fix it with Disk Utility (which at least correctly recognises the stick), and even though I can click on my memory stick I can't do anything to it. Any help would be greatly appreciated!!!

According to an ASC member who claims to work for HP, this issue can be resolved by repairing the permissions of the startup volume in Disk Utility. I can't confirm, but it has apparently worked in at least one case.

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Unable to read usb memory stick + "the disk you inserted was not readable by this computer"

Hi Everyone,
Today I was tryign to use a brand new memory stick 8GB-Samsung PNY on my Mac Book Pro. (Mac OSX 10.7.5)
1. I do not see this drive in the Finder.
   2. Diskutil could detect the drive.
   3. I was trying to put ubuntu image file on the drive from the terminal uitility and I have this error message in a dialog box:
      "the disk you inserted was not readable by this computer"
4. Clicking on initialize helps me realise that the drive is detected. But I do not have a clue on how to proceed from here. I am new to Mac and its file system formats.
The same issue happened with my 500GB external Western Digital Hard Drive. I was reading on forums that WD got some issues with Apple is trying to resolve. I expected to not have this road-block with another brand but it happened with my memory stick. Now I was forming an impression that something should be done to external storage devices inorder for me to use them Mac OSX.
Kindly enlighten me and help overcome this issue.
Thank You

Thank You OGELTHORPE.
I erased the memory stick and formatted to "Mac OS Extended(Journaled)".
I attempted once again to use the "sudo dd" command from termial trying to copy the Ubuntu image file to the memory stick.
The operation termainates with the same message
      "the disk you inserted was not readable by this computer"
The termainal message says some bytes got transffered in so many seconds. It looks like this operation is being terminated in the middle.
Have any suggestions and work arounds?

Why does it say \'The disk you inserted was not readable by this computer\'

I have been using an HP Photosmart Plus B210a printer for a year. Recently I have many inconsistent printing problems, it's slow, in a queue, just doesn't move until I reboot - pull out plug, download again etc... anyway now it's defunct I'm steaming - shall I chuck it and buy another if so which - thinking of HP Envy 120??? Anyway when I try to use usb and not eprint a box pops up saying: The disk you inserted was not readable by this computer. So here lies the problem, but I;ve changed cables and still it pops up. What does this mean? My Lion 10.7 mac OX is as new as the printer. Please advise, before I go insane.

Sounds like you are having a configuration issue with the software. Initially, my first response will be to completely remove the software from your computer and reinstall it using the software that HP makes available to download. Here is a link to that download :
http://h10025.www1.hp.com/ewfrf/wc/product?cc=us&lc=en&dlc=en&product=4021935
Have you also considered trying a different method of communication (e.g. wirelessly or using an Ethernet cord)? This might allow me to make better assumptions on where the issue lays if I know the circumstances which lead to it.
Let me know and have a great day!

New USB stick - "The disk you inserted was not readable by this computer'

I recently bought a 32GB USB stick to transfer data from my current Powerbook G4 with Mac OS X 10.4.11 to a new laptop.
However, when I insert the disk I am told "The disk you inserted was not readable by this computer" with the options to "Initialise", "Ignore" or "Eject".
In all honesty I just want to avoid having to send the USB back, getting a refund and finding one that is compatible with my computer.
Consequently I was wondering if there's a way I can alter the USB disk to become readable by my computer?
Also the USB is described as an "iBoutique 32GB USB 2.0 Hi-Speed Elite Flash Drive".
Would be really grateful if you could help as my my current laptop is dying due to it's age and I would like to move the data over to the new laptop as soon as possible.
Thanks,
Becca

It would lose all data re-initialising it.
A few options...
You could format that HDD as Fat32/MS-DOS, but you'd be limited to 4 GB Filesizes.
NTFS-3G Stable Read/Write Driver...
http://www.ntfs-3g.org/
MacFUSE: Full Read-Write NTFS for Mac OS X, Among Others...
http://www.osnews.com/story/16930
MacDrive for the PCs... allows them to Read/Write HFS+...
http://www.mediafour.com/products/macdrive/

Why do i get the "the disk you inserted was not readable by this computer" error when I don't even have a disk inserted?

Why do I keep getting "the disk you inserted was not readable by this computer" caution message when I don't have a disk inserted???

Unfortunately, I saw this error for the first time this morning. It's on my wife's iMac running Lion, and it appeared when the machine locked up on a Software Update screen prompting her to run an update (I'm assuming this was the recent Security Update).
After numerous failed attempts to force-quit or otherwise safely restart, she hit the power button, and when the machine came back up it failed to recognize the startup disk. I've since successfully restarted from several different (external) startup disks without incident, but each time I attempt to fix the internal drive via Disk Utility the disk shows only as "Media" and all the usual options to Repair or Verify the Disk are greyed out, leaving only the Erase Disk option.
Are we totally hosed?

How do I view and open all my files again that are on my external hard drive?? Error message saying 'The disk you inserted was not readable by this computer' Three options are Initialize, Ignore or Eject.

I have recently purchased Toshiba 1TB hard drive and I set it up and I was able to transfer all my files onto it such as my music, photos, documents. I had correctly ejected and used it again and all these files were safely stored and accessible afterwards. However after I rebooted my computer as it had been going slow and I had too much clogging it up once I reconnected the external hard drive I have error message saying 'The disk you inserted was not readable by this computer' Three options are Initialize, Ignore or Eject. How do I access all my files? I set it up to work on both mac and windows. I have tried both another mac and windows computer and same issue occurs?? I am worried that all my personal files are gone but am confused as the drive has had absolutely no damage to it as it was in a very short time frame and its never left the same spot. Any help would be greatly appreciated. Thanks

Thanks for your quick response. I had a look at your discussion... I tried it on a Windows machine and I thought that was compatible with ExFAT?
Therefore I need to attempt to use my external hard drive with a machine that boasts OS X 10.6.5 or above and then it should work?
Thanks

Accidently unplugged a fairly new HD, now it does not work - "The disk you inserted was not readable by this computer."

Hi all, I have an older intel Macbook running 10.6.8 - I recently plugged in my 2tb seagate external hd to look at some files and then accidently unplugged it with my knee. Now, the common message that you see above comes up everytime I plug it it. I've looked at the disk utility but it won't let me verify it or repair it... Is there anything I can do about this problem? I can't seem to get it to show up on a windows pc either...
Thanks for your help

Hi all, I have an older intel Macbook running 10.6.8 - I recently plugged in my 2tb seagate external hd to look at some files and then accidently unplugged it with my knee. Now, the common message that you see above comes up everytime I plug it it. I've looked at the disk utility but it won't let me verify it or repair it... Is there anything I can do about this problem? I can't seem to get it to show up on a windows pc either...
Thanks for your help

When I insert my Dvd-R it says The disk you inserted was not readable by this computer.Why is this happening ???

When I insert my Dvd-R cd it saids "The disk you inserted was not readable by this computer." Please help
thanks

This is a blank disc? A disc you burned? Burned discs have a relatively high failure rate if you buy cheap DVDs. I bought some Dynex ones once and about one in every four fails.
Have you tried other DVDs to check if it is a drive issue?

My external LaCie drive gets an error message "the disc you inserted was not readable by this computer." The only options offered are "ignore" or "eject" Disk Utility sees the disc but does not give a repair option. What can I do?

When I plug in my external LaCie drive I get an error message "the disc you inserted was not readable by this computer."
The only options offered are "ignore" or "eject"
Disk Utility sees the disc but does not give a repair option.
What can I do?

The good thing about mac-centric resellers such as OWC, is they have people on staff that can answer questions without you buying things first. They also have how-to information, and instructions are included in many of their products. I saw a link to watch a DIY video in one of their pages; an example of a RAID (with its own power supply) is shown on their drives page. Also a few in there, with no power supplies, for less money.
If I were looking to backup and perhaps also have a partition for a system clone, I'd consider something like one of these: http://eshop.macsales.com/shop/firewire/1394/USB/EliteAL/eSATA_FW800_FW400_USB
Some ideas on the RAID backup methods appear in google search, some of the pages are ideas and concepts; and the better ones also warn about using RAID for the only backup plan.
Oh, OWC has live chat. Haven't tried it, nor have I bought anything from them. I have what appears to be two products from them, but have not used either. One is in a box as-new, but has only USB2.0 ports & my Macs needed FW400/800. It has been said their RAM is a good way to upgrade, too. But I can't confirm!
A 'RAID-ready' unit for backup may be more versatile for just that, but I have not checked into these details. I use single HDDs in powered enclosures, and usually manually make backup clones to FW drives, of bootable OS X systems. Some of the OWC raid-ready use eSATA ports so that may not be viable for a computer without them.
The unused in-box external drive I have is like the base model in the link above. However mine is USB2.0 (maybe) and won't boot my older Macs due to hardware variance; and my preference would be for FireWire options, these models do offer that. But the one I have does not. Dual 500GB HDDs, and they could be used in tandem as a RAID. That would be a choice set up in software. I'm not sure and not interested enough to read up just now.
My backup method is not automatic, or a moving backup plan, if I don't get a move-on and make full system clones. I do make copies of photos and documents the manual way, to USB external drives; and occasionally backup to DVD or CD media. And USB flash, that helps to move files between computers without need to use file sharing via wi-fi. {Like Why fly? Walking is better exercise unless one is a bird. Squawk!}
https://www.google.com/#q=raid+backup+mac
Depending on the ports in your Mac, you may be able to use other cables to attach between a backup or externally enclosed hard disk drive with multiple partition and bootable clone in one of them. Not sure about the Thunderbolt, and where that is the main port, adapters are required to access other devices, as allowed.
Anyway, I am going on and on, yet not really saying anything.
My ideas would not be all that interesting to follow as a backup
plan when matching available newer hardware to task, but you
can get some into better ideas if you are not in a rush. Get a
good setup and then look into more an betterer stuff.
Good luck & happy computing!

I am getting the message "the disc you inserted was not readable by this computer" when I plug in a verizon air card into my macbook air. It also does not show up as a device on my desktop. However, I select "ignore" and am still able to connect.

Whenever I insert my verizon air card into my MBA, I get the message "the disc you inserted was not readable by the computer", with the option to either ignore or eject. I select ignore, and am able to connect to the internet, but don't know why this happens. Also, the air card is not showing up as a peripheral on my desk top. Any ideas why this might be happening and how to fix it?

When I unplugged (power) and plugged in again to restart it, yes, I heard it spin and click. Not since then though. I assumed it went to sleep and since the computers don't recognize it they won't wake it.
If I need to replace it can the data on it be recovered?

Why does dvd studio Pro all of a sudden want my serial number?

Using DVDSP 4.2.1. This has been stable on my Mac Pro for many years now. The file importer got confused somehow and even Activity Monitor had trouble force quitting.
I repaired permissions and rebooted and all seemed fine. Now about every 3 or 4 times I start DVDSP it'a asking for me to put in my identifying info, including the SN.. I've got the SN, but I don't feel all warm and fuzzy about this. Does anyone know what has happened and how I can be sure things are not going to lock me out when I need to keep going on a project?

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Why does my memory stick all of a sudden trigger the message "The disk you inserted was not readable by this computer"?

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