Problem with USB Flash Drive

I bought a 1 GB USB flash drive from Walmart. When I went to backup some pictures onto it, I got a whirling rainbow ball & nothing worked. Coincidentally, it worked fine on a PC laptop.

Sounds like it's one of the following. Only the last one claims any kind of Mac OS compatibility, although I'd think it would use a standard protocol that would be accessed by generic drivers that should be in the OS. It's probably something other than the drivers if you can see it in Disk Utility but can't seem to format it.
http://www.retailplus.com/productsfeature.php?productId=83
http://www.retailplus.com/productsfeature.php?productId=85
http://www.retailplus.com/productsfeature.php?productId=93
I'd suggest maybe taking it to an Apple Store, but I think the cost of the fuel and ferry ride would cost considerably more than just purchasing a different one. A SanDisk Cruzer micro works fine in any machine I've tried. I'd be surprised if you couldn't fine a 1GB version for under $20 on sale somewhere near you.

Similar Messages

Trying to install win7 over bootcamp with usb flash drive is not accepted

trying to install win7 over bootcamp with usb flash drive, the partition is not accepted under windows although its formatted ntfs, there is shown a faillure which could be read in the logs of win install but i don't find them. Tried at least five times to reinstall / reformat

You'll probably have better responses over in the Boot Camp forum....here's a link for you:
https://discussions.apple.com/community/windows_software/boot_camp

Looking for All on one with USB Flash Drive Print/Scan support

I am looking for an All in One Print/scan/copy. It should support print from USB Flash drive and scan to the same.
Thanks

Hi,
You may check the HP Officejet 6600/6700 models which support USB Flash drivers.
You may find the flash driver specifications listed within the Memory Device specifications below:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c03058896&cc=us&dlc=en&lang=en&lc=en&product=505...
As well you may check the HP Officejet 8600 Series which supports both USB Flash Driver and Memory cards, its specifications can be located below:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c02858465&cc=us&dlc=en&lang=en&lc=en&product=432...
Both of the products above provide Print, Scan, Copy and Fax functionality.
Shlomi
Say thanks by clicking the Kudos thumb up in the post.
If my post resolve your problem please mark it as an Accepted Solution

Help with USB Flash Drive

I am new to Arch and need some help with a usb flash drive. I have program the base system setup three times and I have got the same error message each time. Everything boots ok until it gets to mount the root device and that is when the error comes up. And yes I have done my homework and found that I need to change a file but I do not know which one and not sure how to.
I have learn more about Linux today than using it at work for over 5 years. Arch users have my highest respect for now I know why they love it so much. The reason I am working with the usb flash drive is I can not setup a hard drive right now for a couple of weeks and want to learn as much as possible before then.

Also, what homework led you to the conclusion that you needed to change a file. If you tell us where you learned this, we may be able to help with the process. If you want us to guess .... My guess would be that you should open /boot/vmlinuz-linux in a text editor and delete all the "7"'s.
(Kidding, hopefully obviously, don't do that).

IPhoto problem with external flash drive

I'm trying to transfer some pictures from IPhoto to my external flash drive but it won't allow me to.

Hi jschmidt33,
Welcome to Apple Support Communities!
Try following along with the article below, if you follow those steps you should be able to save photos to your external drive or any other folder on your computer's internal drive.
iPhoto '11: Export a photo
http://support.apple.com/kb/ph2438
When you email, print, publish, or export a photo from your iPhoto library, iPhoto asks you to choose the size, also known as resolution. The settings you choose depend on what you want to do with the photo.
To change a photo’s size or file format, you export the photo. You might want to export photos so that you can import them into another application.
To export photos:
Select the photo or photos you want to export.
Choose File > Export.
At the top of the Export Photos window, click the File Export button.
To specify the file type for the exported photo, choose an option from the Kind pop-up menu:Original: Exports the photo as it was originally imported into iPhoto, before editing.Current: Exports the photo in its current format. If you imported a RAW-format photo and then edited it in iPhoto, the photo is exported as a JPEG file.JPEG: If you choose this format, choose an option from the JPEG Quality pop-up menu. The higher the quality, the bigger the photo. For example, if the photo will be used on a website where optimal quality for printing isn’t required, you could choose Low to save storage space on the website.TIFF: A lossless file format that works well for transferring photos between computers and applications.PNG: Another lossless file format popular for web images.
To change the size (resolution), choose an option from the Size pop-up menu:
For photos to be emailed or mainly viewed onscreen, these settings compress the photos (making them smaller):
Small: Use for photos you email or publish to websites where you don’t expect anyone to download and print your photos.
Medium: Use when you or your recipients have a reasonably fast Internet connection, such as DSL. This setting is not suitable for making prints.
Large: Use this setting when you and your recipients have a very fast connection. This size can be used to print small to standard-size photos (2 by 3, 3 by 5, and 4 by 6 inches).
For photos to be printed or published for download, these settings provide maximum detail for final prints:
Optimized: Use for larger prints and for publishing photos to websites for others to download and print. With this setting, photos are slightly compressed to a smaller file size so that they download faster without compromising quality.
Actual Size/Full Size: Use to make high-quality prints in small to large sizes, or to upload photos to websites so that others can download and print them. This setting matches the actual size of your photo, so it may take longer to upload or download.
Specify your other options:Include checkboxes: If you choose JPEG or TIFF from the Kind pop-up menu, you can include titles, keywords, and location information with the exported photos by selecting the checkboxes.File Name: Choose whether to export photos in sequence, or by their filenames, iPhoto titles, or album name.Prefix for sequential: If you choose Sequential from the File Name pop-up menu, you can specify text to appear before each number (for example, Birthday01, Birthday02, and so on). This step is optional.
Click Export.
Choose where to save the exported photo files, and then click OK.
iPhoto works best with JPEG files, the standard format for data compression of still pictures. If you experience problems working with a non-JPEG file in iPhoto, use a different image-editing application to convert the image to JPEG.
Good luck!
-Jason

OS X kernel logs problem when USB flash drive connected.

Previously, my Creative Nomad Muvo TX (MP3 player/1GB USB memory stick) worked fine with my Intel Mac mini (10.4.8) until the latest EFI 1.1 update.
Now the USB drive does not mount or appear in finder. It is visible in the System Profiler in the USB section, but the disk utility does not see it.
While the USB stick is plugged in, the system logs the following line repeatedly:
Nov 26 21:32:39 kernel[0]: USBF: 2517.425 AppleUSBEHCI[0x3969000]::Found a transaction past the completion deadline on bus 253, timing out!
Booting in Windows XP (with bootcamp) and plugging in the USB memory stick works fine. So the USB stick and the Mac mini hardware is functioning.
Other USB 2 external harddrives are functioning properly in OS X.
I suspect that the latest Mac OS X or EFI 1.1 firmware update has spoilt my previously happy USB memory stick connection.
Any suggestions?
Thanks in adcvance.
Stephanus

Hi, Stephanus.
1. If Creative does not support that device with a Mac, then that should tell you something. Even if it worked in the past, since they don't support it, there's no guarantee that changes to Mac OS X would render it unusable as you've noted. With that kind of attitude from Creative, I'd think about switching to an iPod...
Since you can use it when booted into Windows with Boot Camp, you might want to consider running Parallels Desktop for Mac. This leverages the virtualization technology of the Intel chips, permitting you to run Mac OS X and Windows simultaneously, rather than having to boot into Windows with Boot Camp. Parallels is cheaper than buying an iPod.
2. The USB message you reported is essentially indicating that the OS detected a USB device but cannot talk to it. This is unlikely to be something you're going to work around, e.g. with Terminal.
3. If you want to pursue this further, you can:3.1. Install the USB debug kit for your version of Mac OS X. Apple provides a variety of Mac OS X USB Software Debug Versions that "are used to provide information about USB device and interface detection, driver and interface matching, driver loading and information generated as a result of normal and abnormal conditions." You could install the package corresponding to the version of Mac OS X you are running and this may help identify if the issue is a USB problem and the exact USB anomaly causing such.
3.2. Take what you've been able to lear from the USB debugger and do one or more of the following:• Join the Apple USB Mailing List. Once your registration is approved, submit a question including the enhanced output from the USB logger and requesting additional advice. That list is monitored by developers of USB devices. Posts are sometimes answered by Apple engineers.
• Join the Apple Developer Connection at the "free" level, then submit a bug report.
• Submit a Mac OS X Feedback.If Creative has their own forums, ala Discussions, you might also want to search or post there for similar reports.Unfortunately, that's about all I have to offer at this point: I don't have the Creative device and hence can't test it.
I think that Creative is disinterested in helping you is a key issue you need to consider.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X

Problems with USB external drive attached to time capsule

Hi,
I bought a WD 1 TB my book as a supplemental backup drive, as I've pretty much maxed out the space in my 500 GB TC with backups form two macbooks. It's attached to the TC via the USB 2.0. For the first few months everything worked fine. Now suddenly neither machine can access the WD drive. It shows up in the Aiport utility but not in the finder. When I plug it directly into one of the macbooks it accesses fine, but I bought it specifically to use as additional network backup drive.
Where have I gone wrong? I updated the firmware for the WD drive, and everything appears fine on the TC and the macbooks. I poked around on the forums and found many a complaint about the WD drives, but I couldn't find a solution to my particular problem.
Any ideas?
Thanks.

The first thing to try is a nice long power cycle of the network if you have not already done this.
Power everything down, order is not important. Wait 5-10 minutes.
Start the modem first and let it run 4-5 minutes by itself. Then start the next device connected to the modem the same way. Keep powering up each device the same way until all devices are powered on.
Any help?
If no luck, the next thing to try is connect the WD drive directly to your computer and "Verify Disk" using Disk Utility.
Applications > Utilities > Disk Utility
Then click "Repair disk"
If indicated, "Repair Permissions" on the disk.
Eject the disk and then you'll have to do the power cycle all over again and plug the device back into the USB port on the Time Capsule.

Problem with USB hard drives

Late last year I bought a new MacBook Pro Retina. Now when I attach USB drives to it, they hang, fail, often giving me a message "This disk was ejected properly."
I've plugged both drives back into my old MacBook Pro (with Tiger) and they play fine, never giving me that message.
Any idea what's going on?
thanks
Scott

This procedure is a diagnostic test. It changes nothing, for better or worse, and therefore will not, in itself, solve your problem.
If you don't already have a current backup, back up all data before doing anything else. The backup is necessary on general principle, not because of anything in the test procedure. There are ways to back up a computer that isn't fully functional. Ask if you need guidance.
Below are instructions to run a UNIX shell script, a type of program. All it does is to gather information about the state of your computer. That information goes nowhere unless you choose to share it on this page. However, you should be cautious about running any kind of program (not just a shell script) at the request of a stranger on a public message board. If you have doubts, search this site for other discussions in which this procedure has been followed without any report of ill effects. If you can't satisfy yourself that the instructions are safe, don't follow them.
Here's a summary of what you need to do: Copy a line of text from this web page into the window of another application. Wait about a minute. Then paste some other text, which will have been copied automatically, back into a reply on this page. The sequence is: copy, paste, wait, paste again. Details follow.
You may have started the computer in "safe" mode. Preferably, these steps should be taken in “normal” mode. If the system is now in safe mode and works well enough in normal mode to run the test, restart as usual. If you can only test in safe mode, do that.
If you have more than one user, and the one affected by the problem is not an administrator, then please run the test twice: once while logged in as the affected user, and once as an administrator. The results may be different. The user that is created automatically on a new computer when you start it for the first time is an administrator. If you can't log in as an administrator, test as the affected user. Most personal Macs have only one user, and in that case this paragraph doesn’t apply.
The script is a single long line, all of which must be selected. You can accomplish this easily by triple-clicking anywhere in the line. The whole line will highlight, though you may not see all of it in your browser, and you can then copy it. If you try to select the line by dragging across the part you can see, you won't get all of it.
Triple-click anywhere in the line of text below on this page to select it:
clear; PATH=; . /etc/profile; Fb='%s\n\t(%s)\n'; Fm='\n%s:\n\n%s\n'; Fs='\n%s: %s\n'; Fu='user %s%%, system %s%%'; PB="/usr/libexec/PlistBuddy -c Print"; A () { [[ a -eq 0 ]]; }; R () { o=; [[ r -eq 0 ]]; }; M () { find -L "$d" -type f -exec sh -c 'file -b "$1" | egrep -q XML\|exec' {} {} \; -print; }; Pm () { [[ "$o" ]] && o=`sed 's/^ */ /' <<< "$o"` && printf "$Fm" "$1" "$o"; }; Pc () { o=`egrep -v '^[[:blank:]]*($|#)' "$2"`; Pm "$1"; }; Pp () { o=`$PB "$2" | awk -F'= ' \/$3'/{print $2}'`; Pm "$1"; }; Ps () { o=`echo $o`; [[ ! "$o" =~ ^0?$ ]] && printf "$Fs" "$1" "$o"; }; SP () { system_profiler SP${1}DataType; }; id | grep -qw '80(admin)'; a=$?; A && sudo true; r=$?; t=`date +%s`; clear; { A || echo $'No admin access\n'; A && ! R && echo $'No root access\n'; SP Software | sed '8!d;s/^ *//'; o=`SP Hardware | awk '/Mem/{print $2}'`; o=$((o<4?o:0)); Ps "Memory (GB)"; o=`SP Diagnostics | sed '5,6!d'`; [[ "$o" =~ Pass ]] || Pm "POST"; o=`SP USB | awk '/V.*[(]/{if ($3 !~ /0(5a|a5)c/) print}' | wc -l`; Ps "3rd-party USB devices"; o=`pmset -g therm | sed 's/^.*CP/CP/'`; egrep -q 'No th|pms' <<< "$o" && o=; Pm "Thermal conditions"; o=`pmset -g sysload | grep -v :`; grep -q '= [^GO]' <<< "$o" || o=; Pm "System load advisory"; o=`nvram boot-args | awk '{$1=""; print}'`; Ps "boot-args"; d=(/ ""); D=(System User); for i in 0 1; do o=`cd ${d[$i]}L*/L*/Dia* && ls | grep -v 'ag$' | tail | awk -F_ '{$NF=a[split($NF,a,".")]; print}'`; Pm "${D[$i]} diagnostics"; done; o=`syslog -F bsd -k Sender kernel -k Message CReq 'GPU |hfs: Ru|I/O e|n Cause: -|NVDA\(|pagin|SATA W|ssert|timed? ?o' | tail -n25 | awk '/:/{$4=""; $5=""; print}'`; Pm "Kernel messages"; o=`df -m / | awk 'NR==2 {print $4}'`; o=$((o<5120?o:0)); Ps "Free space (MiB)"; o=$(($(vm_stat | awk '/eo/{sub("\\.",""); print $2}')/256)); o=$((o>=1024?o:0)); Ps "Pageouts (MiB)"; s=( `sar -u 1 10 | sed '$!d'` ); [[ s[4] -lt 85 ]] && o=`printf "$Fu" ${s[1]} ${s[3]}` || o=; Ps "Total CPU usage" && { s=(`ps acrx -o comm,ruid,%cpu | sed '2!d'`); o=${s[2]}%; Ps "CPU usage by process \"$s\" with UID ${s[1]}"; }; s=(`top -R -l1 -n1 -o prt -stats command,uid,prt | sed '$!d'`); s[2]=${s[2]%[+-]}; o=$((s[2]>=25000?s[2]:0)); Ps "Mach ports used by process \"$s\" with UID ${s[1]}"; o=`kextstat -kl | grep -v com\\.apple | cut -c53- | cut -d\< -f1`; Pm "Loaded extrinsic kernel extensions"; R && o=`sudo launchctl list | sed 1d | awk '!/0x|com\.(apple|openssh|vix\.cron)|org\.(amav|apac|calendarse|cups|dove|isc|ntp|post[fg]|x)/{print $3}'`; Pm "Extrinsic system jobs"; o=`launchctl list | sed 1d | awk '!/0x|com\.apple|org\.(x|openbsd)|\.[0-9]+$/{print $3}'`; Pm "Extrinsic agents"; o=`for d in {/,}L*/Lau*; do M; done | grep -v com\.apple\.CSConfig | while read f; do ID=$($PB\ :Label "$f") || ID="No job label"; printf "$Fb" "$f" "$ID"; done`; Pm "launchd items"; o=`for d in /{S*/,}L*/Star*; do M; done`; Pm "Startup items"; o=`find -L /S*/L*/E* {/,}L*/{A*d,Compon,Ex,In,Keyb,Mail,P*P,Qu,Scripti,Servi,Spo}* -type d -name Contents -prune | while read d; do ID=$($PB\ :CFBundleIdentifier "$d/Info.plist") || ID="No bundle ID"; egrep -qv "^com\.apple\.[^x]|Accusys|ArcMSR|ATTO|HDPro|HighPoint|driver\.stex|hp-fax|\.hpio|JMicron|microsoft\.MDI|print|SoftRAID" <<< $ID && printf "$Fb" "${d%/Contents}" "$ID"; done`; Pm "Extrinsic loadable bundles"; o=`find -L /u*/{,*/}lib -type f -exec sh -c 'file -b "$1" | grep -qw shared && ! codesign -v "$1"' {} {} \; -print`; Pm "Unsigned shared libraries"; o=`launchctl getenv DYLD_INSERT_LIBRARIES`; Pm "Inserted libraries"; o=`find -L {,/u*/lo*}/e*/periodic -type f -mtime -10d`; Pm "Modified periodic scripts"; o=`scutil --proxy | grep Prox`; Pm "Proxies"; o=`scutil --dns | awk '/r\[0\] /{if ($NF !~ /^1(0|72\.(1[6-9]|2[0-9]|3[0-1])|92\.168)\./) print $NF; exit}'`; Ps "DNS"; R && o=`sudo profiles -P | grep : | wc -l`; Ps "Profiles"; for f in fstab sysctl.conf crontab launchd.conf; do Pc $f /etc/$f; done; Pc "hosts" <(grep -v 'host *$' /etc/hosts); Pc "User launchd" ~/.launchd*; R && Pc "Root crontab" <(sudo crontab -l); Pc "User crontab" <(crontab -l); R && o=`sudo defaults read com.apple.loginwindow LoginHook`; Pm "Login hook"; Pp "Global login items" /L*/P*/loginw* Path; Pp "User login items" L*/P*/*loginit* Name; Pp "Safari extensions" L*/Saf*/*/E*.plist Bundle | sed 's/\..*$//;s/-[1-9]$//'; o=`find ~ $TMPDIR.. $ -flags +sappnd,schg,uappnd,uchg -o ! -user $UID -o ! -perm -600 $ | wc -l`; Ps "Restricted user files"; cd; o=`SP Fonts | egrep "Valid: N|Duplicate: Y" | wc -l`; Ps "Font problems"; o=`find L*/{Con,Pref}* -type f ! -size 0 -name *.plist ! -exec sh -c 'plutil -s "$1" >&-' {} {} \; -print`; Pm "Bad plists"; d=(Desktop L*/Keyc*); n=(20 7); for i in 0 1; do o=`find "${d[$i]}" -type f -maxdepth 1 | wc -l`; o=$((o<=n[$i]?0:o)); Ps "${d[$i]##*/} files"; done; o=$((`date +%s`-t)); Ps "Elapsed time (s)"; } 2>/dev/null | pbcopy; exit 2>&-
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
When you launch Terminal, a text window will open with a line already in it, ending either in a dollar sign ($) or a percent sign (%). If you get the percent sign, enter “exec sh” and press return. You should then get a new line ending in a dollar sign.
Click anywhere in the Terminal window and paste (command-V). The text you pasted should vanish immediately. If it doesn't, press the return key.
If you're logged in as an administrator, you'll be prompted for your login password. Nothing will be displayed when you type it. You will not see the usual dots in place of typed characters. Make sure caps lock is off. Type carefully and then press return. You may get a one-time warning to be careful. If you make three failed attempts to enter the password, the test will run anyway, but it will produce less information. In most cases, the difference is not important.
If you're not logged in as an administrator, you won't be prompted for your password. The test will still run. It just won't do anything that requires administrator rights.
The test may take up to a few minutes to run, depending on how many files you have and the speed of the computer. A computer that's abnormally slow may take longer to run the test. There wiil be nothing in the Terminal window and no indication of progress until it's done. Wait for the line "[Process completed]" to appear. If you don't see it within half an hour or so, the test probably won't complete in a reasonable time. In that case, close the Terminal window and report your results. No harm will be done.
When the test is complete, quit Terminal. The results will have been copied to the Clipboard automatically. They are not shown in the Terminal window. Please don't copy anything from there. All you have to do is start a reply to this comment and then paste by pressing command-V again.
If any private information, such as your name or email address, appears in the results, anonymize it before posting. Usually that won't be necessary.
When you post the results, you might see the message, "You have included content in your post that is not permitted." That's because the forum software falsely identifies something in the post as a violation of the terms of use. If that happens, please post the results on Pastebin, then post a link here to the page you created.
Note: This is a public forum, and others may give you advice based on the results of the test. They speak only for themselves, and I don't necessarily agree with them.
Copyright © 2014 Linc Davis. As the sole author of this work, I reserve all rights to it except as provided in the Terms of Use of Apple Support Communities ("ASC"). Readers of ASC may copy it for their own personal use. Neither the whole nor any part may be redistributed.

Boot Problems with USB HD Drive

I bought a
*Samsung S1 1.8" 250 GB Drive*
for using as boodrive with my Macs.
*This drive will not be found during system boot*.
Yes, the disc ist formatted correct (GUID partitiontable)
Mac OSX 10.5, 10.6 could be installed without any problems.
*Yes, I tried:*
- different USB2 ports
- tried different drives on the ports, works fine
- copied system to the drive
- installed a clean system on the drive
- tried "alt" during boot, drive not shown
- from the installed system the drive is offered as bootdrive in systemconfiguration setup
- disc works fine as external disc after booting the mac. Even on the Keyboards plug.
*Yes, I asked at samsung support*, seems they are not really interested.
They told me they the did not verify - ask at apple-suport - apples fault.
It was obviously a text module.
What is my option using this drive? Trash?

The reason ist found.
The Samsung S1 Mini 250 GB HDD USB2.0 1,8" can not be used as a boot-disc, because ist is not a single disc. Internal it is a raid-system of two discs. This will not be shown as one disc before finishing the system-start.
Samsung should have known this and I do not understand why the deny the problem.
The smaller discs of 120/160 GB are able to boot. This is positively confirmed with the 120GB disc.

Problem with USB hard drive Maxtor One touch 500 GB

Hi,
I am a quite new user of Mac book pro and therefore I am a little bit rusty on these topics. Anyway, I have bought the Airport extreme and have connected it to my internet and it is working fine. Now I have tried to connect my hard drive to the airport extreme and it is not working to good. I have used the airport utility to configure the security and connection for the hard drive, funny enough the hard drive is recognised and I am able to see the hard drive name. Now, for some reason I can not see the hard drive anywhere on the Mac and can not access the content on the hard drive. I only can see the hard drive name using the airport utility but I want to access the content. I have tried to locate the content using finder but I can not see the content anywhere. Please help me here as I think I am just missing something silly...
Claes

No answer given but I have managed to fix it my self

LG USB Flash Drive Problem

I have an LG 1GB USB Flash Drive, which has worked flawlessly for the last year or so. All of a sudden, just recently, it always takes two tries for it to mount. In other words, when it's inserted the first time it doesn't mount, but remove it and insert it again, and it mounts! I've reformatted it (Mac OS Extended), but it didn't help. I've also tried it on two other Macs, and it's the same thing. Any suggestions?

Hi anybody,
I have a similar problem with a flash drive. I was just using it on a PC, properly disconnected it from there and then plugged it into a USB hub I have on my Mac. Now it's dead. No light on the flash drive, no drive recognition in system profiler or disk utility and it's also dead on PCs now too. If I could format it that would be one thing but nothing recognizes it now. The files on there weren't life or death but I'd like to get them back AND not have to just throw away the flash drive.
Ideas??
iMac G4 Mac OS X (10.4.9)

USB Flash Drive Memory Problem

Dear all,
Yesterday, I had a problem with my flash drive when I was trying to save stuff to it. This is the second time it's happened to me, the first time with a different flash drive. I was saving Word files onto it normally. All of the sudden, when I tried to save another file, it gave me an error message that the disk was full or that it was write protected (which is not) or that there was a problem with the file name (which was not the case either). I tried a couple of times, but still the same thing. Instead of saving the document directly from Word, I decided to save it to the desktop and then dump it into the flash drive. It gave me a message that the disk was full. I checked with "Get Info" and it still had a lot of space! I have a 1GB flash drive, and it says that it's only using 258.9 MB. I don't know what to do. The flash is formatted in MS-DOS File System FAT16, fyi. Help!
Thanks!

Hello Again! Have you emptied the trash with it plugged in? The fat32 filesystem won't allow certain characters us Mac users are used to using all the time. If the size still doesn't seem to be resolved you can reformat it fat32 (msdos) on the Mac or on a pc to regain the total size. Tom

USB Flash Drive not mounting

I recently bought an 8GB USB flash drive, which came formatted FAT-32. The drive was put into a friend's Windoze laptop and had a couple GBs of jpeg and avi files transferred to it. I took the drive home and put it in my white MacBook (4GB RAM, Leopard 10.5.8) and it would not mount. I put it in my G4 MacMini; likewise, it wouldn't mount. I am assuming it also won't mount in all my older Macs with USB, either. I returned it to the Windoze laptop, and it ALSO wouldn't mount this time, except as one pulled the flash drive from the Windoze laptop, for a second a window with the flash drive's contents would flash on the desktop of the laptop. Originally, the flash drive was "properly" ejected from the Windoze laptop.
On the MacBook, both Disk Utility and DiskWarrior do not see the flash drive when it is in the USB port (either port). However, Apple System Profiler does recognize when it is plugged into the port. ASP returns the following information when the flash drive is in the high speed USB port:
"Flash Disk:
Product ID: 0x3234
Vendor ID: 0x1221
Version: 0.00
Serial Number: 10000000000003CF
Speed: Up to 480 Mb/sec
Manufacturer: USB2.0
Location ID: 0x24100000
Current Available (mA): 500
Current Required (mA): 100"
Anybody have any idea what is the cause of my problems with the flash Drive and how I can get the drive to mount? I don't think the problem is a function of my Apple hardware, as my USB ports on all my machines function with everything else USB which I have without problems. Thanks.

I know that, but I have USB in my older Macs, too, and besides, some of the most knowledgeable people are in these older forums!!
I've come to the conclusion that the drive may be defective, too, but I was just looking for some possible angle which I'd not already considered. I tried reformatting, but without the drive even being recognized, it isn't even possible to reformat. I can only get ASP to indicate that it is attached.
Thanks for your try!

USB flash drive defined as boot device but not visible by the boot driver.

I have installed Mountain Lion (10.8.2) over Lion a few days ago. In the follow-up operations, I tried to create a USB flash drive recovery device, using methods widely advertised over the web. I first tried this with an 8 GB "Kingston DT 101 G2" device. The creation of the device either manually through the use of the Disk Utility or using a small utility called Lion DiskMaker 2.0.2 worked OK.
However, after setting the resulting device as the boot device through "System Preference", it never booted on it, but instead on the normal system disk. Conversely, when booting with the option key depressed, I could only see as option the normal system disk or its recovery partition, but never the USB flash drive, although it was present.
After numerous tests, through the so-called "trial and error" method, I eventually found out that I obtained perfectly bootable USB devices with either a generic device seen as "USB 2 USB Flash Drive" by the disk utility, or with a "Kingston Data Traveler G3" USB flash drive (both being 8 GB devices).
Now, I can understand that, for whatever reason, some USB devices, although formatted as boot devices, will not be seen by the boot driver. But, in such a case, it is a serious issue that "System Preference" accepts to set them as boot devices. I would suggest that "System Preference" tests whether the boot driver is able to see them and, if not, issues an error message instead of accepting them as boot device.
I also have an unrelated side question: when restoring a disk through the Disk Utility, is the resulting new volume defragmented and compacted by the process or not?

I can only tell you that some USB flash drives don't work as expected on Macs, and I don't believe it is specifically related to the product since they often work for others. I have five flash drives from a particular manufacturer that when plugged into one of my computers are not recognized, yet they are on all my other computers. I have six or seven older ones from the same manufacturer, same model, that work fine on all my computers. I have two Kingston Travelers that would not work as a bootable device on any of my computers. Many other users here have had issues with San Disk flash drives.
I don't know if this helps any, but at least you can know that you aren't alone.
One thing I can suggest is when you prepare a new flash drive that you go through this process:
1. Open Disk Utility in your Utilities folder.
2. After DU loads select your hard drive (this is the entry with the mfgr.'s ID and size) from the left side list. Click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Click on the Options button, set the partition scheme to GUID then click on the OK button. Set the format type to Mac OS Extended (Journaled.) Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
This may fix boot problems with new flash drives because they are often prepared by the manufacturer with NTFS. To fully clear the drive you must both partition and format the device. Writing zeros has in some cases helped make a drive bootable when at first it was not.

Cannot mount dvd or usb flash drive in kde 4.6 ?

Hi,
I am unable to mount a dvd in kde 4.6 I keep getting the following error:
udisk error permission denied: not authorised
I have added myself to storage, disk and all the normal groups. I had the same problem with a flash drive but after adding the following as 11-media-by-label-auto-mount.rules in /etc/udev/rules.d the flash drive now mounts but will not safely unmount. I have set removable media to automount in system settings.
Any ideas what the problem is with udisks/udev in kde 4.6?
KERNEL!="sd[a-z][0-9]", GOTO="media_by_label_auto_mount_end"
# Import FS infos
IMPORT{program}="/sbin/blkid -o udev -p %N"
# Get a label if present, otherwise specify one
ENV{ID_FS_LABEL}!="", ENV{dir_name}="%E{ID_FS_LABEL}"
ENV{ID_FS_LABEL}=="", ENV{dir_name}="usbhd-%k"
# Global mount options
ACTION=="add", ENV{mount_options}="relatime"
# Filesystem-specific mount options
ACTION=="add", ENV{ID_FS_TYPE}=="vfat|ntfs", ENV{mount_options}="$env{mount_options},utf8,gid=100,umask=002"
# Mount the device
ACTION=="add", RUN+="/bin/mkdir -p /media/%E{dir_name}", RUN+="/bin/mount -o $env{mount_options} /dev/%k /media/%E{dir_name}"
# Clean up after removal
ACTION=="remove", ENV{dir_name}!="", RUN+="/bin/umount -l /media/%E{dir_name}", RUN+="/bin/rmdir /media/%E{dir_name}"
# Exit
LABEL="media_by_label_auto_mount_end"

Thanks adee. I deleted the udev rule as it didn't work any way.
I gradually homed in on policykit: I was testing out xrdp for remote session and now I can see the logic of not letting a remote user access removable media etc. It was one of the reasons for the policykit idea in the first place, to limit access for remote sessions-it sure works.
I changed one of the policykit rules to (inactive=no to yes) to see if that would work but still no go which is a bit strange.

Problem with USB Flash Drive

Similar Messages

Maybe you are looking for