I keep getting the notification 'The disk you inserted was not readable by this computer', but I never inserted anything.

Hey there friendly advisers.....is there a way to resolve this issue. I keep getting it every time I power up.

Being almost 4 years old, it may be time to replace the PRAM battery.
Also, might you have anything inserted in the SD card reader slot?
Do you have any USB Flash drives connected?

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The disk ... was not repairable by this computer

I have a 16GB USB Flash drive that I decided to use to make Time Machine Backups. Since this implies having an HFS+ partition and since I wanted to be able to use it as a simple USB key to exchange files from a computer to another, I partitioned the drive.
I therefore have a FAT partition, which allows me to exchange files with PCs and an HFS+ partition for Time Machine.
When I connect the USB Key to a PC, only the FAT partition is seen.
On the Mac, both partitions are seen.
It worked for a couple of weeks, then I suddenly got a dreaded "The disk 'Time-Machine-Backups' was not repairable by this computer...."-message, the USB drive is then mounted in read-only and is indeed not repairable by Disk Utility. I only had this problem with the Time Machine partition.
There still is over 1GB free on the Time Machine partition so that I don't think the issue is related to a lack of spare room on the partition.
I ended up re-formatting the whole USB Flash drive and started over. Again, this worked for about a week and I now have the exact same problem, which leads me to think that it's not related to a random physical damage that could have occurred the first time (not a very plausible theory with a Flash drive anyway).
I've read about similar issues on other forums but even when solutions were provided, they didn't solve mine. I'm looking for a definitive solution / explaination, not just a way to get my data back and reformat the drive once again.
Any ideas anyone?

I've formated the partition again and again, it worked for a couple of days, Time Machine worked, everything looked fine. I diconnected the Flash drive properly (ejecting all partitions before unplugging the device), went for a walk with the Flash drive in my purse, plugged the drive in, all partitions were recognized but the Time Machine was write protected, could not be repaired and only seems to be formattable again..
Anyone??

Suddenly my 1 TB Western Digital external hard drive has decided to give me a "the disk you inserted was not readable by this computer" error

I was playing music on iTunes (my iTunes library is stored on the hard drive) when I realized that it was running slow and giving me some pinwheels. So, I force quit iTunes, ejected the hard drive, waited a couple of seconds and plugged it back in. To my surprise it gave me an error that said "The disk you insterted is not readable by this computer" with the options to initialize, ignore, and eject. I have been searching Google, YouTube, and other forums for fixes (I am not too handy with Terminal without some assistance). I am able to go to Disk Utility and I see the drive there, and when I go to the partition is says "not mounted" I have tried repairing the disk only to get the notificiation that tells me Disk Utility is unable to repair the disk. I also ran Terminal and tried doing diskutil repairDisk and repairVolume to no avail. Below you can see the information I have gotten from Disk Ultilty and Terminal. Any and all help would be greatly appreciated as I have my music library, art projects, and other very important data on this drive! Thank you in advance!

Yikes, doesn't look too good. But there are still things you can try.
I noticed the disk is formatted as MS-DOS FAT32. While such disks can be read and used on Macs, it's better to set up your disks formatted for the Mac. For one thing, the Mac disk repair tools don't work as well on FAT32 (PC-style) disks. Which might be why Disk Utility did not succeed.
I suggest using a PC running Windows to connect the drive to and see if the data are all visible, and if not, run the built in disk check tools in Windows. Also, WD disks usually come with disk tools on the drive, did yours come with those? Either for the PC and/or Mac? You might be able to download them from the WD sites.

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?

Keep getting a "the disk you inserted was not readable by this computer" when I insert my printer cord into either USB port. Recently installed a portable hard drive for back up purposes. Related?

Keep getting a "the disk you inserted was not readable by this computer" when I insert my printer cord into either USB port. Recently installed a portable hard drive for back up purposes. Related?

Does your printer have a slot for an SD card? Is there are card in the slot? If so, the computer is trying to mount that card as an external device. It might be corrupted so that it can't be read.

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!

Audio CDs get "The disk you inserted was not readable by this computer"

Hi All,
This a near-duplicate of a message originally posted to the Snow Leopard forums.
A couple months ago I upgraded to 10.6.4 from Leopard and configured a Boot Camp partition running Windows 7. Yesterday I discovered that whenever I put any audio CD, retail or burned, into the Macbook's drive I now get this message - "The disk you inserted was not readable by this computer" - with the options to ignore or eject. Disk Utility displays no unusual information, but a check of the system log on Console turned up this:
Sep 8 11:05:21 Hard-Drive diskarbitrationd17: unable to probe /dev/disk1 (status code 0x00000047).
Has anyone encountered this problem before? I suspect it's related to Boot Camp but not to the initial installation - CD reading worked fine right after the install. Note that this only affects CDs - Burned and retail DVDS read without any trouble.
Michael
P.S. The CDs tested include one just out of the shrink wrap, so please, no "have you checked your CDs they may be scratched" replies.

Thanks, but no thanks. This is a software/hardware (driver?) issue, not a hardware issue alone. I kept a bootable backup copy of my 10.5.8 installation on an external drive, and a quick restart into that yields a desktop where CDs still load perfectly. I'm looking for power users with specific experience with this particular error and insights into what is causing it in 10.6.4.
Message was edited by: mlach, who is tired from simultaneously troubleshooting this and an X11 error and has forgotten how to type.

F this error message "The disk you inserted was not readable by this computer" with 2 radio buttons "Ignore" or "reject" It comes up every time I start my new printer. How do I get rid of it?

When installing my new HP printer I received the following error message when I inserted the software install disk: "The disk you inserted was not readable by this computer" with 2 radio buttons "Ignore" or "reject" I was able to eject the disk but the message remains. Now every time I start up the printer this error message pops up on my computer. I have since used the disk drive successfully for music CD's etc. How can I get rid of this message?

PRAM RESET
Zap the PRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.

My Sandisk cruzer thumb drive 4.0GB (which is very old, roughly 10 years and I'm not sure about the model) reads "The disk you inserted was not readable by this computer" when inserted in my Macbook pro 2010. How do I get it to work?

My Macbook Pro 2010 with the latest OS does not open a particular Sandisk Cruzer 4.0GB (which is an old model, about 10 years) thumbdrive with the message "The disk you inserted was not readable by this computer". Will I be able to read it on my macbook?

Is it readable in a Windows computer? If not then you can try Disk Utility to repair the drive-- although that may be dangerous too.
I haven't had this problem so I out of safe ideas. There are ustilies out there. I used the seach term "repair flash drive Mac OS X" to locate some of these.
If the data is essential there are pay-for services to recover data looked the price was in the range $50 - $1000
All the best.

"The disk you inserted was not readable by this computer" 10.9.3 - WD-500GB WD5000AADS

Mac Book Pro
MAC OS Extended(Journaled)
Capacity:97GB
Version-10.9.3
Hello Mac Fam,
I recently purchased a HD-Enclosure (Insignia 3.0 desktop hard disk enclosure),since my WD 500Gig Hard Drive broke(power cable broke). Before the Hard Drive broke, it worked perfectly on my Mac Book Pro (Read/Write). I was extremely excited when i purchased the HD Enclosure since i thought that it would work perfectly, like it did before. However, i keep getting the following message ""The disk you inserted was not readable by this computer". I haven't tried anything, since upon reading various post regarding this problem, i get bits of information but never the complete solution.I have many pictures/files/etc. that i refuse to lose. I know this can be fixed, just need a bit of help to get it done. Any feedback would be greatly appreciated. Merry Christmas to you all, and hopefully someone can help me out.
-guS

OK. for anyone who has had or is having this problem, I think I've found a solution, or a least one that worked for me:
Select your start-up drive, do a Get info (Command-I)
At the bottom where it says sharing and permissions, I had two items: System and Everyone. Both were set to Read. I unlocked using administrator password. I then reset the two items above to Read and Write. I then clicked on the little plus sign which brought up a dialog window. In that I selected Administrator and then set that to Read and Write.
My audio CD's now mount as they always have for years! Very odd, and honestly I could not explain why this worked, but I figured it out myself, something that I now feel I owe my self a fine Belgian beer.
Good luck

HT204053 I want to play newly purchased music but cant, i get the message "You can use iTunes Match on this computer with just one Apple ID every 90 days. (mobileme family pack is the problem i think)

I purchase a new album on my phone but then cannot download it to my laptop - I get the message:
"You can use iTunes Match on this computer with just one Apple ID every 90 days. All I can think is that the problem stems from purchasing a mobileme family & some of the music being my daughters. (she is 9 & I need to be ble to listen to more than Katy Perry & Justin Bieber) Please help! :-(

Welcome to the Apple Community.
Youll get that message when you change the iTunes account you are logged into, you can't keep changing it.

WD external Hard Drive comes up with "The disk you inserted was not readable by this computer."

So here lies the problem, when connecting my WD external HD to my MBP, I get the message The disk you inserted was not readable by this computer. and a further three options of initialize, ignore and eject. I have always hit ignore.
When checking my files, the HD is not available in my finder window.
I've gone into Disk Utilities. It is there to be highlighted. And I go to repair the disk, but each time the Repair button is greyed out.
I've tried to use my data recovery software (rescue pro deluxe) but because the drive isn't showing up in that program, it isn't working.
Are there any other options out there to get the files from that HD (I've just gotten back from 2 months of travel with a bunch of photos on that HD - so would like to get them back). Even if that means putting them onto a spare external HD.

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

When insert my lexar USB flash drive I get the message that the disk was not readable by this computer. It has worked previous to this and I do not want to lose the data by reformatting the drive. How can I reformat this drive and not lose my data?

When insert my lexar USB flash drive I get the message that the disk was not readable by this computer. It has worked previous to this and I do not want to lose the data by reformatting the drive. How can I reformat this drive and not lose my data?

You can't reformat it and not wipe everything on it.
Have you tried a different USB port?
Only other option, back it up on a different computer.

External HDD: "The disk you inserted was not readable by this computer"

Hi,
I have an external drive with important data on it (there is a backup, but there is also some non-backuped data as well...). I cannot access the external drive because I receive a "The disk you inserted was not readable by this computer" message connecting it. I was wondering, if you have some advice on how to get my data back?
I have a WD Elements 2 TB (about 2 months old), I am using is with an iMac, latest Snow Leopard. The drive used to work all fine. Now, I receive a "The disk you inserted was not readable by this computer" every time I connect it. Same thing happens if connected to my MacBook Pro.
What happened?: I was copying files to the external drive. I the middle of it, I received a message complaining I that assumedly ejected the drive by pulling the USB cable out instead of properly ejecting it software-side (I did not do this). The drive symbol was gone. Now, I plug the drive out an reconnected it. The drive symbol showed up again. I continued copying files on the drive, but after some 30 seconds, I received the same error message again. One more time, I disconnected and reconnected the drive - this time to another USB port. The drive showed up, but I was not able to copy files on it (I am using muCommander, it just kept showing 0kb progress). I restarted the Mac. Since then I am getting the "The disk you inserted was not readable by this computer." The drive symbol does not show up anymore.
I was googling the problem: in one forum there was a suggestion to click "initialize drive" and than to "repair" in DiscUtility. I clicked initialize drive and the drive is shown in DiscUtility, but "repair" and "verify" are greyed out. I read more posts on it, one posts suggested NOT to click initialize because that means format in Mac OS language (btw: ***, why is it not called format).
That is the situation at the moment. What is the best - if there is - way to get my data back? DiscWarrior?
I very much appreciate your advice!
Daniel

"Initializing" a drive has been normal computer terminology for decades. "Formatting" generally referred to the high-level preparation also called "erasing." None of this is "Mac OS language."
Disk Warrior will not likely fix the problem you have. DW can repair a damaged directory, but your error suggests an even worse problem of directory corruption. I suggest you try using DW if you have it. Visit the Alsoft site to determine the limitations and usage of the version you have. It may not be able to boot your computer depending upon what version of DW you have and how new your computer is.
If you have no success with DW then see the following:
Basics of File Recovery
Files in Trash
If you simply put files in the Trash you can restore them by opening the Trash (left-click on the Trash icon) and drag the files from the Trash to your Desktop or other desired location. OS X also provides a short-cut to undo the last item moved to the Trash -press COMMAND-Z.
If you empty the Trash the files are gone. If a program does an immediate delete rather than moving files to the Trash, then the files are gone. Recovery is possible but you must not allow any additional writes to the hard drive - shut it down. When files are deleted only the directory entries, not the files themselves, is modified. The space occupied by the files has been returned to the system as available for storage, but the files are still on the drive. Writing to the drive will then eventually overwrite the space once occupied by the deleted files in which case the files are lost permanently. Also if you save a file over an existing file of the same name, then the old file is overwritten and cannot be recovered.
General File Recovery
If you stop using the drive it's possible to recover deleted files that have not been overwritten by using recovery software such as Data Rescue II, File Salvage or TechTool Pro. Each of the preceding come on bootable CDs to enable usage without risk of writing more data to the hard drive. Two free alternatives are Disk Drill and TestDisk. Look for them and demos at MacUpdate or CNET Downloads.
The longer the hard drive remains in use and data are written to it, the greater the risk your deleted files will be overwritten.
Also visit The XLab FAQs and read the FAQ on Data Recovery.

External Drive: The Disk You Inserted Was Not Readable By This Computer

I have a 2TB Western Digital external drive that I've been using for a year or two as my backup for my Aperture libraries. Been working fine until now, I get the "The disk you inserted was not readable by this computer." Clicking "Initialize" takes me to disk utility with no usable options. Whatdoido?!
Did my laptop just become illiterate?

I had this exact issue with my external harddrive, I scrolled forums and did what they said and nothing, then I just happened to be in the app store and thought I would search for data recovery, a few came up and only a couple had ratings so I looked at Data Rescue 3, its £40 so I went ot their website for the trial version, downloaded and installed that, tried it and rescued a random file (limits obvioulsy on the trial verison) and it worked so paid the £40 and am currently saving all my files to another external harddrive.
Try out the trial first and if it works on one file i reccomend the the full program!
Good Luck!

I keep getting the notification 'The disk you inserted was not readable by this computer', but I never inserted anything.

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