My external hard drive is not recognized my desktop or time machine
how can i fix this??
I tried to repair it through Disk Utility and this error message appeared
Filesystem verify or repair failed.
Invalid record count
volume check failed
It's almost full...could this be why??
Similar Messages
-
My external hard drive is not recognized by my computer.
My external hard drive is not recognized by my computer. I used it earlier and it was fine however my computer froze and I unplugged my hard drive without properly ejecting it. Now when I plug it in nothing pops up. I've tried on three different computers and no luck. I hope this is fixable! Please help.
Care to share which OS you are using?
Repair permissions & restart your computer.
Zap the PRAM -
just got Prosoft drive genius 3 software, and it's telling me that the external hard drive that i am using for my time machine back up drive needs to be defragmented. is it wise to do this or should i not??
Let's hope a couple things: that you have bootable clones of your drives also; that the backup drive for TimeMachine has over 3x capacity of the data you plan and are storing. I would also switch TM backup drives so you have a 2nd.
Fragmented free space affecting performance happens when the drive is too full which may mean there isn't enough free space for a full backup set.
1.5TB for backing up 500GB, while WD Green 3TB is $140 and WD Black 1.5TB is, about the same price.
I'd be worried about the integrity and directory, and whether you can afford to lose that drive. Defragging is also a very slow operation. the ideal: to just clone a drive, or start over with another drive and wait. cloning TM volumes has not been done or has it? SuperDuper hoped to but I don't think they or Bombich's CCC made it there.
Trouble with highly fragged is when free space gets to 20% normally, 1/3 or so though for TM volumes, and finding where and a chunk of space for the file being written. Does TM use large spare image files of like 2GB?
Best would be to ask in the TimeMachine section Snow Leopard
https://discussions.apple.com/community/mac_os/mac_os_x_v10.6_snow_leopard?view= discussions#/?tagSet=1009
where there are some good FAQ and tutorials, and people that know the ins-and-outs and shortcomings. -
Does an external hard drive have to stay plugged in with Time Machine?
I have an external hard drive but I do not always leave it plugged in. I usually back up my computer every week or so and am just now getting around to using Time Machine. If i plug in my external hard drive and press "Back up now" will Time machine back up my entire computer again or just what has been updated? Do I have to leave the slider for Time Machine in the On position or should I turn it off until the next time I plug it in?
ThanksOnly if you want it to continue backing up the computer. If you eject it Time Machine will suspend backups. Time Machine will reinitiate backups when the drive is reconnected.
If nothing has changed, the selecting Back up Now will not create a completely new backup. -
I have a Seagate FreeAgent GoFlex 1TB USB 3.0 external hard drive that I currently use just for Time Machine backups. Is it possible for me to go into Disk Utility and create a new partition on the drive so that I may install Windows 7 via Boot Camp? Or since I am already using it for Time Machine do I have to keep it only for Time Machine?
You must install Boot Camp in your internal drive because Windows can't be installed in an external disk and Boot Camp can't do that
-
HT3764 How to reformat an external hard drive using Snow Lepard to use for Time Machine
How to reformat an external hard drive using Snow Lepard to use for Time Machine
Use the Disk Utility in the /Applications/Utilities/ folder to erase it as Mac OS Extended (Journaled) with GUID as the partition map format(or APM if you're using a PowerPC Mac running 10.5).
(73291) -
My backup hard drive does not have enough space for time machine to perform a back up even after erasing entire contents of bu hard drive. The hard drive has been in service for almost two years performing this function with no sign of failure. How do I adjust time machine perameters?
The only way to limit the size of the backup is to exclude data from the backup, which you can do in Time Machine preferences.
If you use multiple browsers, have you tried clearing your browser caches? However, that's just a stop gap if it works. You either need to limit what you backup or get another drive. -
The external hard drive is not recognized by my macbook pro (yosemite).
The external hard drive that was recognized by my older iMac (snow lion), is not recognized by my new macbook pro (yosemite).
Can anyone help me with this? Thank you!Can you see the drive in Disk Utility?
See mount section in 1st linked article.
Disk Unmount Using Terminal
Disk Utility – Force Mount Disk -
External hard drive is not recognized in Migration Assistantt
I had my hard drive replaced on my iMac, Mac OS 10.4.11, Snow Leopard.
I backup my computer using Time Machine onto an external hard drive.
In Migration Assistant, the external hard drive does not show up. There are no choices to choose to migrate from.
Any suggestions please!See Pondini's TM FAQs, for starters.
-
External hard drive is not recognized after attempt to format
I just got a new macbook and couldn't use my external hard drive because it was formatted on a PC and only allowed me to read the data. I backed up the data on the 250gb hd and then used Disk Utility to erase the hd and format it as "Mac OS extended (journaled)." After beginning, Disk Utility stopped working and showed up as "not responding" in the Activity Monitor.
Now the hd does not show up on the desktop and can only be seen in Disk Utility. If I try to erase again or partition the hd the utility stops responding. If I try to zero out the drive it continues to say "preparing to zero" indefinately. Now the hd is also not recognized by windows except in the windows disk utility, but it does not even give the option of formatting/initializing it, so that is not an option.
Has anyone ever seen anything like this before, or have any idea of something that I haven't tried yet. I really want to get the drive working and have exhausted all the ideas I can come up with. The internet has not provided too many ideas either.
Thanks so much for your help.
Black MacBook Mac OS X (10.4.6)I have crazy solution to format it to FAT 32, it work a couple times on my several MAxtor, and Western Digital HD. But this is the last resort and if you are not handy and familiar, don't do it.
It happen on my external HD, so I crack the enclosure open, pulled the HD out and attached it as internal HD on a PC after adjusting the jumper to master and make sure no other HD attached to the motherboard. Make sure the motherboard detected (you can see it from bios menu).
Insert a bootable installer disk before XP ('98, ME, or 2000), and start from there until a promt comes, and type fdisk and you delete the old partition and create a new partition and restart once using the disk still and format it using FAT 32.
After that you put it back to the enclosure, and mount it to MacBook as a new HD with default factory format.
If you don't have the installer disk, this might help :
http://www.bootdisk.com/
But if your maxtor still under warranty better talk to them first and they might willing to reformat it for you.
Hope this help your external back and let you use it on your MacBook. -
External Hard Drive suddenly not recognized
I have a WD 500GB external hard drive that I use to back up my data. I only have one hard drive as I'm currently living abroad and couldn't bring a 2nd with me.
I plugged in my external last night to back up my MacBook Pro and it backed everything up. I even went into Time Machine to go back and restore a file or two and that worked without problem. I have been using this drive for about a year to back up everything on my Mac and, although sensitive, it seems to work okay.
I plugged it in this morning and nothing. My Mac will not recognize that the drive is not plugged in in Time Machine or in Finder. If I go to Apple Logo > About This Mac > More Info... > Storage tab, it just shows my internal hard drive and my CD/DVD drive. If I click on Disk Utility with the drive plugged in, it shows my Hard Drive (Macintosh HD) with two icons, one inset below the other and both in black font, and then my external hard drive has two underneath, but only the top one is black font - the one underneath is greyed out.
It goes like this:
250.06 GB Hitachi...
Macintosh HD
500.08 GB WD My Passport
Time Machine Backups (greyed out)
Superdrive (greyed out)
When I clicked on the 500GB one and told it to repair/verify it said the disk was working fine. I tried unplugging and replugging in the drive (it is not recognized in Finder so I could not properly eject the disk). I restarted my Mac with it unplugged and plugged it in afterward and nothing.
The HD itself is working, the light is blinking (not solid) and I can feel the hard drive spinning, but I'm at a loss as to what to do to get my Mac to recognize it again.
Any suggestions would be helpful.
Thank you!I also wanted to add, when I click on the greyed out Time Machine hard drive that's listed and then click "Info", this is what it says:
Name : Time Machine Backups
Type : Partition
Disk Identifier : disk1s2
Mount Point : Not mounted
File System : Mac OS Extended (Journaled)
Connection Bus : USB
Device Tree : IODeviceTree:/PCI0@0/EHC2@6,1
Writable : Yes
Universal Unique Identifier : 56EF6088-FFCE-300B-81D7-3E0986532AB5
Capacity : 499.74 GB (499,735,552,000 Bytes)
Owners Enabled : No
Can Turn Owners Off : Yes
Can Be Formatted : Yes
Bootable : Yes
Supports Journaling : Yes
Journaled : No
Disk Number : 1
Partition Number : 2 -
My external hard drive is not recognized
I have the apple external disk drive. I have used it numerous times. I just plugged it in and the computer is not recognizing it. I have tried both USB ports. How can I fix this?
A: USB desktop or 2.5" port powered?
B: did you just install mavericks
C: DOES IT show in disk utility?
Can you confirm it on another Mac?
Apple doesnt make HD, what HD is it marked as?
Likely its a dead SATA bridge card, a very very common problem with USB and external HD
see here:
Your dead external hard drive is likely fine! Great hope for your 'faulty' external HD
report back with more info -
My Passport for Mac external Hard drive is not recognized
I recently had to purchase a new MacBook Pro, and when I tried to get files off of my Passport for Mac external hard drive. I get an error stating "The disk you inserted was not readable by this computer." And when I try to initalize, and verify disk, I get this message "Partition map check failed because no slices were found.". I have already updated firmware for the external hard drive. One site I found stated that it could be that the USB port is not strong enough, and I would need a 2.0 Booster cable. Does anyone know if this would work?
What did you old Macbook die from? Likely the HD in it is still ok, yes?
You can remove the HD inside your old dead Mac and put it into a $20 HD enclosure or HD dock, and remove the photos that way, very easy.........IF your old Macbook died from something other than ALSO a bad HD.
You said----my OLD Macbook pro which recently lost video
What happened with your old "dead" macbook? Still have it? -
External hard drive is not recognized anymore
For a couple of months i have been backing up my stuff on an external hard drive (Verbatim) no probs.
Last time I didn't close the external hard drive down properly. Now my Macbook does not recognize the external HD any more.
I have tested the external HD on other PC and it still works fine.
How can I change my settings or do something else to have my Macbook recognize is it again.
Thanks!Whenever an external drive is disconnected without first being ejected or dismounted, file system corruption is a very real, perhaps even likely, possibility. If that has happened you might try repairing it with Disk Warrior:http://www.alsoft.com/diskwarrior/
Message was edited by: macbig -
My external hard drive suddenly not recognized (retina macbook pro)
Windows 8 has a great feature which is "windows to go", so I have installed windows 8 in my external hard drive. The problem just happened. I was using windows via my hard drive. I shut down the computer and turned on mac system. Then the hard drive wasn't detected!
I have tried doing following things but didn't work:
I plugged out and plugged in the the external hard drive again.
I restarted the mac system.
I put my charger on.
I opened the console and here are the "Message"...:
1/18/14 8:53:51.000 AM kernel[0]: USBMSC Identifier (non-unique): 012345678933 0x152d 0x539 0x1302, 3
1/18/14 8:53:52.000 AM kernel[0]: MacAuthEvent en0 Auth result for: 10:bf:48:3d:cb:03 Auth request tx failed
1/18/14 8:54:39.000 AM kernel[0]: MacAuthEvent en0 Auth result for: 10:bf:48:3d:cb:03 Auth request tx failed
1/18/14 8:57:13.000 AM kernel[0]: MacAuthEvent en0 Auth result for: 10:bf:48:3d:cb:03 Auth request tx failed
PLEASE HELP ME!It is formatted for both PC and Mac
I have tried finding it in Disk Utility, no dice...
Tried both USB Ports
And a reboot is still unsuccessful..
Maybe you are looking for
-
SC 3.2 Solaris 10 x86. When one node reboot, the other one does also
Configured a two node cluster with a EMC clariion san (Raid 6) for holding a zpool and use as quorum device. When one node goes down, the other one does also. There seems a problem with the quorum. I can not understand or figure out what actually goe
-
Why do all my devices ring when I get an incoming call? How do I turn this off?
Since my last iphone update (8.1.2), everytime I get an incoming call of any form (regular call, facetime, even sms and imessages), all my other devices (ipad, ipods) ring too at the same time. Its driving me crazy. How to I get rid of that?
-
For some reason, I'm not sure if my N97 mini got infected by a virus or what but apparently some of my folders such as download, music, images were all gone for both Mass Memory and Memory Card. It's still der but has a file extension of .exe. Prior
-
Calling a URL using JavaScript even handler
When I'm trying to call another URL using JavaScript, it doesn't work. I did following things, 1).Created a Button 2).In javascript event handler, I'm calling Javascript function doSearch() 3). I wrote this function in Header Text Section of the Form
-
I've not received a crash ID