ExFAT external drive permissions problem

Hello,
I have a new iMac running Mountain Lion. I have setup an external drive (iomega 1TiB) with two partitions, one for time machine, the other for sharing and storage purposes formatted with ExFAT. Few days ago, both partitions went unexplicabily into read-only mount mode. While the time machine partition had low occupation I just reformatted and restarted time machine. The other partition I would like to solve without reformatting as I don't want to copy everything to the iMac and then move it again to the external drive. Moreover, I'm afraid it will happen again. Any hints on why this happened?
Thank you
RL

I've tried everything I can think of to reformat this disk. Originally it was formatted for MSDOS but reformatted for the Mac. I can access the files on the drive but I don't delete them or erase the drive and reformat. I can't partition the drive. Everything is greyed out. I've tried booting to recovery drive and trying to reformat it there wihtout success (still all greyed out). At a loss to understand. Verify reports it to be okay:

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Hard drive permissions problems

My Mac Pro has four internal drives plus a fifth, external drive. I keep running into error messages about “you don’t have permission to do that.” Here are the five drives and their permissions:
Macintosh HD (internal drive)
thomaskehoe – Read only
system – Read & Write
wheel – Read only
everyone – Read only
SSD (start-up drive, internal)
system – Read & Write
wheel – Read only
everyone – Read only
Documents HD (internal drive)
thomaskehoe – Read & Write
tdk (Me) - Read & Write
system – Read & Write
admin – Read & Write
everyone – Read only
2TB HD (internal drive, Time Machine only)
thomaskehoe – Read only
staff – Read only
everyone – Read only
Videos 2010 (external drive)
tdk (Me) - Read & Write
staff – Read only
everyone – Read only
When I open the “Users & Groups” System Preference panel I see three accounts:
Thomas David Kehoe (current user) - Admin
Thomas Kehoe - Admin
Guest User – Sharing only
But the hard drives list the following seven accounts:
thomaskehoe
tdk (Me)
system
admin
staff
wheel
everyone
Lots of questions:
- Why doesn’t SSD (the startup-drive) show my account? Is Lion somehow running on Macintosh HD even though SSD is set as the start-up disk? From the speed of start-up it seems to be starting from the SSD. The desktop icons have Macintodsh HD as the top icon.
- Am I “thomaskehoe” or “tdk (Me”)? Are these accounts? If not, what are they?
- I appear to be “Thomas David Kehoe – Admin,” not “Thomas Kehoe – Admin.” Should I get rid of the latter account?
- I understand that “everyone” isn’t an account.
- “admin,” “wheel,” and “staff” seem to be different ways of saying “group,” which isn’t an account. Why do different hard drives have different names for this?
- “system” seems to be on every drive that has an operating system, so that’s not an account either.
- Should I set every permission to “Read & Write” except “everyone”?
- Should I run Disk Utility > First Aid > Verify Disk Permissions and Repair Disk Permissions? I ran this on SSD and it found lots of stuff to repair.
iTunes and iPhoto seem to be the apps that have the most problems with permissions.

Thomas Kehoe wrote:
Macintosh HD (internal drive)
thomaskehoe – Read only
system – Read & Write
wheel – Read only
everyone – Read only
SSD (start-up drive, internal)
system – Read & Write
wheel – Read only
everyone – Read only
Documents HD (internal drive)
thomaskehoe – Read & Write
tdk (Me) - Read & Write
system – Read & Write
admin – Read & Write
everyone – Read only
2TB HD (internal drive, Time Machine only)
thomaskehoe – Read only
staff – Read only
everyone – Read only
Videos 2010 (external drive)
tdk (Me) - Read & Write
staff – Read only
everyone – Read only
When I open the “Users & Groups” System Preference panel I see three accounts:
Thomas David Kehoe (current user) - Admin
Thomas Kehoe - Admin
Guest User – Sharing only
But the hard drives list the following seven accounts:
thomaskehoe
tdk (Me)
system
admin
staff
wheel
everyone
You are getting groups and accouunts confused. You have 2 admin accounts, either because you created them or because you used Migration Assistant after Setup Assistant, instead of on your first boot. The Guest user is standard from 10.6. It is an account that can be used by guests and will preserve no data created after use and return to default.
- Why doesn’t SSD (the startup-drive) show my account? Is Lion somehow running on Macintosh HD even though SSD is set as the start-up disk? From the speed of start-up it seems to be starting from the SSD. The desktop icons have Macintodsh HD as the top icon.
Easy way to find out Apple Menu > About this Mac > Startup Disk.
- Am I “thomaskehoe” or “tdk (Me”)? Are these accounts? If not, what are they?
- I appear to be “Thomas David Kehoe – Admin,” not “Thomas Kehoe – Admin.” Should I get rid of the latter account?
You're asking me? If you have everything you need in “Thomas David Kehoe – Admin,” then, yes you can delete the other account.
- Should I set every permission to “Read & Write” except “everyone”?
Nooo. Don't do that!
When you "Get Info" (command-i) on the you should have "Ignore ownership" at the bottom NOT checked.
Although, this may not be an option on internals.
- Should I run Disk Utility > First Aid > Verify Disk Permissions and Repair Disk Permissions? I ran this on SSD and it found lots of stuff to repair.
You can. As long as it reports "Permissions have been repaired" you're good to go. No need to run it more than once, it won't change. Read this.

IMovie 6 Why? audio extract, copy file to external drive, delete problems

Why are these problems occuring in iMovie '06
+the remaining clip, after an audio extract, no longer has audio, and the extraction does not only extract the selected clip, but the whole movie
+copy and paste an iMovie (.iMovieProject) file 10.66G to a 30G external drive results in "error code 1309" and fails to finish copying
+a 10.66G movie where about 99 percent of the clip was deleted still reads as 10.66G even though the clip is only 26 seconds long.
Premature release of program me thinks.
Powerbook G4 12" 1.5Ghz, 768K RAM Mac OS X (10.4.4) also a powerbook G4 15" 1.25Ghz 256K RAM (with only one good RAM bay)
Powerbook G4 12" 1.5Ghz, 768K RAM Mac OS X (10.4.4) also a powerbook G4 15" 1.25Ghz 256K RAM (with only one good RAM bay)

Welcome to iMovie Discussions ..premature posting of question, methinks. (..without, perhaps, having searched for or read any previous discussion of these or similar topics..)
a - This is the iMovie HD (version 5) Discussion ..there's a separate area for iMovie HD 6 ..but I'll still be happy to answer your questions!
1 - When audio is "extracted", the original clip is simply muted, and a copy of the original audio from it is pasted into a separate audio track below the video. Normally, you'd select an individual clip (or clips) from which to extract (Copy) the audio. If nothing specific is selected, then everything may be extracted.
2 - An external drive must be formatted as 'Mac OS Extended' or HFS+ for iMovie to be able to work with files stored there. It may be formatted in PC (Windows) FAT 32 format, and there may be a file size limit in that format which is incompatible with your Mac operating system. See this page of error codes, where "error -1309 fileBoundsErr: file's EOF offset mark or size is too big" ..that means that the End Of File marker is incompatible with what's being copied. Googling will find other info, such as this discussion, which prompts a handy reminder that your external drive must be connected by FireWire, not by USB, for you to be able to edit and play via the external drive: a USB connection isn't consistently fast enough for playing video.
3 - When you delete part of a clip, in iMovie HD (any version) all the rest of the material is still saved, in case you want to Undelete, or make other alterations which need still having access to the original material. [ This is part of the enhanced "non-destructive editing" which was recently introduced into iMovie. In previous versions, when you deleted something, it was irretrievable! ] That's why the full 10.66GB remains. You could 'Share' (Export) just that 26 sec clip to DV, then re-import it as a new clip, and you could then delete the entire original clip, thus regaining the full 10.66GB of space.
So it's not a premature release: it's a considered, robust, thoughtful release, which now incorporates several solid features which make it more reliable than some previous releases.
Once you get to know how - and why - it works the way it does, you may be glad that it does work as it does.
There are still some bugs in it - many to do with "rendering" ..the rewriting of adjusted video, particularly of adjusted still photos within iMovie - but don't judge it just on a quick first glance!
Hope you find it works for you ..it's a great program, I think.

External Drive Reading Problem

So,
I'm transferring files to my Mac using a FreeAgent Drive by SeaGate. I click on the external drive button and I see the files, but when I click on them, they disappear. I view the files on my other machine, they open up with no problem. What gives? I'm assuming that this is a setting problem since they are viewable on the other comp. What gives? Any Settings I need to tweak?
-gotmud

If your Mac were older, it would probably work fine. Before 10.4, the Mac would have treated it as a "foreign" file system and mounted it and read it just fine.
In 10.4, the advent of the Intel Macs meant that you could now boot from Windows-formatted drives, and Windows formats were now "native".
I know the history, but I do not know the implications of Windows formatting. It should be FAT-32, but I don't understand what the Mac is trying to do with it that would make the Icons jump around or disappear.
There is a hint that there may be trouble in this document. It suggests that when you want to copy a bunch of Windows documents, you put them in one Folder on your Windows machine, then copy that one Folder, then open it when it gets to your Mac. I think the key is that the files are hidden in folders, so that exactly which Icon they should have, and where they should be in the window cannot cause confusion.
http://docs.info.apple.com/article.html?path=Mac/10.4/en/mh1529.html
Message was edited by: Grant Bennet-Alder

External drive partitioning problem

while trying to resize partition on my external drive with disk utility I get a message:
Partition failed with the error:
Filesystem resize support required, such as HFS+ with Journaling enabled
Disk format is Mac OS Extended (Journaled) - isn`t it HFS+? Then, what am I doing wrong? It is important to me not to loose my data

Rod,
Finally solved the mystery. Obviously, it would not be in the Help section, even though I had followed the directions exactly. Once I typed in the Size: 70GB, I then had to click on the left hand grey, partition box. At that moment, the box enlarged and the 70GB did not change in the Size window. How is one supposed to know to do all of that????
Anyway, it worked.
By the way, the Apricon Enclosures came and the setup was extremely easy. Took about 5 minutes and it was a Firewire External Drive. I got very good support, getting answers by email and phone in hours, not days. They are even sending me a cable that was missing. No Problem.
Now, I will work through the SuperDuper program. In corresponding with them, they suggested strongly that I Clone, and not Image the drive.
Thanks
Herschel

External drive boot problem

I have a Verbatim USB external drive plugged into my iMac used for backups with time machine. When I start the computer it immediately stops at a blank white screen. If I turn the computer off and unplug the external drive and restart it works fine. Is there anyway to make the computer boot with the external drive plugged in?

Open Sys preferences then Startup disk and select your internal drive and click Restart then again restart from the drop down that Drops Down.
Once you have done that and the system restarts shut it down and connect the external then start it back up. It should now go to the internal drive automatically.
If it doesn't then you have some other problem which may be a hardware problem. Post back with your results.

External drive recognition problem

I am having issues with my iMac recognizing an external drive. I have:
iMac 5,1 10.4.11, Intel Core 2 Duo 2 GHz, 1GB Memory, PIONEER DVR-112d in a BYTECC ME-525U2FW Aluminum External enclosure connected through Firewire.
The iMac initially recognized the drive, no problem. Trouble is, when I turn off the drive and then power it back up, the iMac can't recognize it. I was able to solve it initially by powering down the drive, unplugging it from the firewire, reconnecting to firewire, and the powering up the drive again.
System profiler states all software up to date.
Any suggestions would be appreciated. Thanks!
drayman86 is online now Report Post Edit/Delete Message

Thanks for the reply.
Has performed this way since install, which was about 72 hours ago.
When first connected through firewire and turned on, drive immediately recognized by iMac. Drive works, both ripping and burning. Turned drive off. Went to power up drive, and problem arose.

External drive disconnection problem.

How do you go about keeping external drives connected when the computer goes to sleep? I have eexternal drives connected to both the iMac and Macbook Pro, When they go to sleep, somehow the dirves get disconnected sith "disk not ejected properly" messages. This happened some with Mountain Lion, but all the time with Mavericks. I have Seagate drives on the iMac, and a WD My Passport on the laptop.

Hi,
I was also facing this problem for a long time.
I tried many ways to get this thing rid off..
In my case i was using a WD external hard disc which was NTFS windows partitioned.
So i was using TUXERA which is a 3rd party app to enable write access with this NTFS Drive.
I simply uninstalled this app, and the disk eject was Successful.
If yours a similar problem, hope it helps you.
Peace!

Need help repairing bootable external drive permissions

I, like some of the other posters I have read, have messed up the permissions on a bootable external drive.
I don't have direct access to my home computer right now so I set up an external bootable copy of my personal account, so I can basically run a copy of my own personal computer from anyone elses mac. And when I get back home I will be able to copy back across any new files.
The set up was working great till I realized that my external drive was completely readable, and writeable by anyone who turned it on as a peripheral disk while logged in on the main computer if the computer was booted up on it's own startup disk.
If my external was set as the startup disk, then my password and account kept everything secure.
So anyway, not really knowing what I was doing I, using the show info command, changed the group permission for the whole disk/volume from admin to my username. Now unfortunately I cannot startup using my external disk; the whole system goes straight to Kernal. And all my files are still totally assesible to any one logged in on the computer using its own start up disk.
Can you help me with the commands, to first repair the group permission so my disk is bootable again, then second so that I can prevent anyone with out my password access to any files on the disk?
Thanks alot!

Can you help me with the commands, to first repair the group permission so my disk is bootable again, then second so that I can prevent anyone with out my password access to any files on the disk?
On another machine, open the Disk Utility in the /Applications/Utilities/ folder, select your drive in the list of disks, and then click on the Repair Permissions button; other solutions are available if this doesn't work.
Your two goals are mutually exclusive; there is no way to restrict access to an entire disk to yourself while maintaining the ability of that disk to boot Mac OS X. Your home folder can be protected in this way by changing the permissions on the item inside /Users/ with the house icon, or by turning on FileVault in the Security pane of System Preferences.
(11310)

Time machine back up failed on my external drive & more problems

Hi,
I'd be grateful for any help.
I have a G-TECH 1TB external drive (7 months old) and decided to use that with Time machine to back up my files. I hadn't used the drive for about 4 months but it had worked fine the last time I used it. I connected it to Time Machine and a back up failure message of some kind appeared. Since then the drive is unusable... I'm lucky if I can get the drive to mount ("the disk you inserted is not readable by this computer)" yet I can't reformat it - disk utility can't erase or partition it. It throws up a variety of error messages (can't unmount drive & resource busy are a couple) which usually ends with the spinning ball of death. Tonight I spent my hard earned money on Disk Warrior, which appeared to check and rebuild file systems and the drive mount now mounts but I still can't reformat it or use it in any way. Have now spend hours trying to mount and reformat it and it's driving me mad...
Thanks very much.

Yellowvan wrote:
Hi Pondini,
Yes, I bought DiskWarrior 4.1.1 - it came up with this report:
" DiskWarrior has successfully built a new optimized directory for the disk named "Untitled."
The new directory is ready to replace the original directory."
Did you let it do that? If not, nothing was changed!
The drive is still under guarantee - can they really fail this quickly?
Sure, a few drives from any production run will be D.O.A, and a few others will fail very quickly, as with nearly any manufactured product.
But you don't know yet whether the drive is bad. If you didn't let DW replace the directory, run it again and do so.
If it's still troublesome, try the other things in my last post before deciding it's the drive.

External Drive Formatting Problems - Please Help!

I formatted an external drive (just a 1gb memory stick, i intend on formatting an external hard drive i have coming in the post in the same way. This is to test that it will work) with 2 partitions.
Half in HFS+ for my storing documents from my intel imac and the other in FAT32 to use as a windows partition to store documents from my windows laptop.
(I know that FAT32 works with both but FAT32 has a 4gb transfer limit and is general untrustworthy - if possible i'd rather format the windows partition in NTFC if possible?)
I'm doing the formatting/partitioning in apples disk utility and it appears everything works fine, my mac detect both partitions as separate drives as its supposed to.
However, when i then insert the drive into my windows laptop it detects the drive and tells me that it needs to be formatted, i say yes... and it formats the whole thing as FAT32, whereas i want half FAT32 (or preferably NTFC) and half HFS+.
I tried formatting half as HFS+ and half as 'free space' (again with apple disk utility) then inserting it into the windows laptop, it asks me to format it and it formats just the HFS+ side into FAT32 and the 'free space' stays that way.
Does anyone have any solutions to this?
Any help would be MUCh appreciated.

In Disk Utility, when you partition (tab) again, click on "Options..." at the bottom, then change it to Master Boot Record so your PC is happy.
MacFuse 2.0 can read, write and create NTFS and other foreign formats.
http://code.google.com/p/macfuse
http://apple.slashdot.org/article.pl?sid=08/12/17/167220
Disk Utility defaults to GPT and puts small 200MB GUID, adds an EFI partition for each user volume, and those are what probably confuses Windows, especially XP.

External drive/OS problem with itunes

I had itunes installed on an external drive, thought everything was there and safe, but now after my C drive on my computer has been swapped out to upgrade to Windows 7, I don't know how to make itunes work again. There is an itunes folder on my external drive, and a media folder that sems to have about the same amountof data as is on my ipod. Can't see anything that looks like a program file. Do I need to reinstall itunes, and if I do, will my ipod and phone fill the library and apps back in? i did a backup a while ago, but not recently, and the change to the computer happened before I had a chance to do a new backup. I'm not smart about iTunes; thanks for any help.

I'm back at my computer....I do have .itl files....here is a screenshot of what I have inside the iTunes folder on my external drive, plus I have the media folder:
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Passport Studio external drive access problem

I have an external drive that is not 'seen' by my MacBook at OSX 10.8.4. It has all of my TimeCapsule backups plus additional files added manually. The drive appears to be fine hardware-wise. Is there anything I can do to access this drive? Thanks

Programs/information. I have not used any of these, so I don't have any personal experience with them.
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Can't Read/Write to External HDD-Permissions Problem

I have external Seagate HDD, formatted as FAT32, connected to Airport Extreme Base Station. I am unable to Read/Write to this Drive because Finder says I "Don't have permissions" to do so.
Following are details that may be important:
1. I was able to read/write to this drive under Leopard but lost the right under Snow Leopard, after upgrade to SL.
2. In Airport Utility, I set up (2) accounts for the External HDD, "Dad" with "Read/Write" access and "Mom" with "Read" access only. I have Guest Account privileges set to "Read Only". It has been this way for (2) years.
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4. I can change the Permissions on the "everyone" account (in Finder) by changing the permissions on the "Guest Account" in Airport Utility. When I do this, "everyone" in Finder now has "read/write" access but my two accounts, "Dad" and "Mom still don't show up in Finder.
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My apologies for bumping this but I still don't have a solution...any help would be greatly appreciated!

Airport extreme with USB hard drive permissions problem may be parallels

I cannot access my external hard drive because of some permission problem. I know because I can see this through the disk repair utility. I've attached my external hard drive to my airport extreme. It originally came up well and worked fine. Then it lost connection and now doesn't recognize my password. To confuse matters worse I have parallels installed. This might be where the password problem is as the mac wants to access as a guest and the parallels (windows MX) as my account name. It's all pretty complicated to explain. What I want to do now is just to forget the airport plan and reach my hard drive but it won't boot up even with airport off and a direct firewire connection. It does show up in disk repair utility but with permissions. How can I get to these permissions and drop them. What if they're windows permissions somehow? How can I get started.
Thanks

I have a very similar problem. I have a 2.8 GHz iMac with 2GB RAM and am using OS X v10.5.4, and an Airport Extreme (v7.3.2), both updated to latest firmware. I have a 500 GB TrekStor external HD connected to the AEBS via USB. The TrekStor HD was pre-formatted in FAT32 and is visible on my iMac's desktop and in Finder but I cannot transfer files to it or see files on it. When I drag and drop a file on the TrekStor, it sometimes seems to go well but then the file is not visible via Finder, and sometimes I get an "insufficient privileges" message. I repair permissions on the iMac's internal HD without any change. I am logged in as the admin. All assistance is much appreciated!

ExFAT external drive permissions problem

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