External USB3-Drive doesn't wake up again on iMac but on MacBook
Hi guys,
did anyone made this experience already too? I've a brand new external USB 3 case. When I connect it to my iMac, it works fine, even over many of hours if permanetly in use. But as soon as the drive goes into sleep mode, afterwards I can not access the files again in this session. You can list the 1st directory level only, but not deeper or access any files, but it keep visible as drive in Finder.. To resolve this, you have to turn off and on the drive and afterwards you can access it again.
This happens on my iMac, connected via USB 3, a current and up to date model.
However, when I connect this drive to an older MacBook Pro, there it works absolutly fine. This MBP does only have a USB 2 connector.
Any ideas how to fix this?
Thx. in adv.!
I have a similar issue on my Mini. I have an external (Macally) USB3 enclosure. I have a WD 1TB dirve inside. It runs fine for several hours and then after powering down (sleep) it will not come up again. Sometimes it operates fine (wakes up) but sometimes not. I'm using it as a TM backup so when TM wants to do a backup it will not start up. I have to manually turn off the drive and then back on. I orginally had a Macally FW800 enclosure and no issues so must be either the enclosure or something with the Mac.
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External hard drive doesn't wake up fast enough for Time Machine
I am having trouble with using SuperDuper and Time Machine doing their jobs with my external firewire drives.
Config: One 750GB drive (one partition called DataDisk) and one 1TB drive (with two partitiions - Clone and TMDisk) connected thru daisychained firewire to the mac mini.
*Backup Strategy*: SuperDuper clones the internal hard drive to the Clone partition once a week. The Time Machine is setup to backup the DataDisk to the TMDisk.
Usage: My Mac mini is essentially a media server with iTunes always running. Per advice on another thread, I have the mini's power saving setup to let the hard drives go to sleep when possible.
Problem: Once the external drives have gone to sleep, and the SuperDuper tries to do the cloning, it fails. Similarly, the TM fails to find the backup drive. However, if I keep the drive active at the time of these backups, both SD and TM work fine.
Is there a way for me to wake up the drives before SD starts its cloning? Note: I am not letting the mini go to sleep as I use Apple TV to play its contents remotely.
Also, is there a way to wake up the drive before TM starts its operation every hour?
Appreciate any help.
Message was edited by: new2appletvHi Andy,
Thank you very much for your suggestions.
I will try to test with USB connection. I will try with the 1TB drive first as the 750GB drive needs work. The 750GB drive needs the firewire interface card to be replaced by the USB card whereas the 1TB has both available together.
I am not terribly in favour of keeping everything ON for the following reasons:
1. The mini or the drives make a whirring noise all the time that they are ON. One of the reasons, I retired my windows PC is that it is inside a computer armoire in my bedroom and even then the noise from the SMPS and CPU fans drive me crazy.
2. The TM starts a backup cycle every hour even when there is nothing to backup and this causes clicking noise from the drives. If I could configure TM to run only once a day so that I can get the rollback uption (which SD can't) when I accidentally delete some data file. But, I am told that TM can't be configured thus.
3. Power consumption: I have a power meter that plugs into the AC outlet into which I can connect the devices under measurement. I will find out how much power it really consumes. I had purchased this device to measure the power consumption of the pump/filter in my Koi pond as that runs 24/7 and I don't like drawing too much of electricity as it is a scarce resource today (the electricity cost is also very high in Northern California).
I am just wondering if I should buy one of those RF remotes that you connect to USB port which can operate from upto a distance of 60ft. I could keep this next to my Apple TV remote and use it to wake up the mac mini before using my Apple TV. I only hope that the mac mini wakes up on this type of remote as well. -
External hard drive doesn't work on any other machine but my Mac since I connected it to the Mac
My external hard drive used to work on any machine. I watched movies on my tv, putted the movies on the hard drive using my pc. Since I connected it to my new MacBook Air, it doesn't connect to anything else anymore! I hope it's something in settings witch I accedentely clicked on (something with privacy so it can only connect to my Mac or something like that). Does anyone know how this happend/how to fix it?
PS. Maybe its important, I use it for Time Machine as well. Before I used that, it deleted my whole hard drive whitch really ****** me off. Now I got new stuff on it. Maybe my Mac is just claiming it to keep the hard disk for itself?One can't read the other.
Just to be clear Mac's can read/write FAT32 but windows cannot use OS X Extended. So to use a drive on both systems it needs to be formatted FAT32
FAT32 does have limitations and possibly the best solution is to use NTFS, a more modern, robust filesystem. The drawback here is that OS X does not natively read NTFS so a third party kernel extension is needed. -
Ok so I recently got a new MacBook Pro and my external hard drive will let me see what I have on it but wont let me save. It worked fine with other MacBook Pro's with snowleperd but dosen't seem to work with my Mountian Lion.
Open Disk Utility
Select the external drive
Then read the parameters for that drive
Allan -
External hard drive won't power back up when iMac wakes from sleep
I have the external hard drive connected via USB. I always put my iMac to sleep before going to bed and I wake it up when I come home from work. Except that when I do, the external hard drive doesn't power up. It still shows in Finder, but clicking on it's folders just opens them up as if they were empty. There's no access noise and the drive can't be ejected.I have to switch it's power off and turn it back on for it to spin back up.
At first I thought it was because I had Energy Saver set to power down the drives whenever possible, which works just fine when it's on, the drive powers on and off as needed just as long as the iMac doesn't go to sleep. I turned it off just to make sure and it made no difference. As soon as the iMac goes to sleep and the drives powers down, it will not come back on without a power cycle once the iMac wakes.
I've used this drive in an old Macbook for years without having this problem. The only difference is that the Macbook was on 10.6.8. I was thinking about buying a 4 bay USB enclosure and filling it up with hard drives, but I'm not about to do that if every time I put the iMac to sleep, the whole thing will not power back on without a power cycle.
Any help would be much appreciated.Not sure if you managed to get this issue resolved yet Marcus, but I too have a similar problem:
Currently I'm upgrading from Leopard to Lion (via Snow Leopard) on both an iMac and MacBook Pro (both Intel), but before I proceed with the OSX upgrade I wanted to back everything up. Thus far I have partitioned an external firewire drive (G Drive - one that is bootable), and cloned each machine using Carbon Copy Cloner to it's own partition (both GUID). There is plenty of space left over on each partition.
The issue - I can boot the OS X from the external drive on the MacBook Pro but not on the iMac.
When I restart and hold down Option on the iMac the only drive that appears is the HDD, not the other two selectable drives that are visible if I boot up on the MacBook Pro. On the iMac in System Prefs > Startup Disc I can see all 3 drives but when I select it and restart, the machine freezes on the grey loading screen and goes no further.
Not that it should make a difference, but there is a 3rd partition on the external drive that is currently empty (for extra storage).
Any help is greatly appreciated - I can't find any relevant answers elsewhere. Thanks,
Dan -
My external hard drive doesn't show up in finder, is it dead?
My external hard drive doesn't show up in finder.Time machine can't find it. Does this mean my external hard drive is dead?
I borrowed a friends and switched mine with hers. My acted the same way in her macbook. I switched the cords on the external drives, no change.
Also, Is there a way to retrieve the information from my sick external hard drive? Thanks for your help.If the Disk Utility sees it, you might be able to repair it or recover the data on it with a product such as DiskWarrior or Data Rescue.
If the Disk Utility doesn't see it, contact professional support.
(64290) -
I bought an external hard drive for backups to use with Time Machine, but however when I try to connect it with the other windows laptop it doesn't work ? intact it doesn't work on any other device except my MAC ?
Do not worry about it.
Time Machine needs that your external drive is formatted in HFS+, or better known as "Mac OS Extended (Journaled)". This filesystem is used by Apple on Macs and Windows cannot read or write drives formatted with this filesystem, being this the reason why all your devices do not read the external drive except your Mac.
You can only use your external drive to make Time Machine drives. If you store anything different, you may damage the Time Machine structure, so it is better not to use it as a drive to store other data. Instead, get another external drive to do it or create a second partition on the external drive formatted in FAT32 by using Disk Utility > http://pondini.org/OSX/DU3.html FAT32 can be read by Windows PCs -
When I press "select backup location" in the Time Machine section of System Preferences, my external hard drive doesn't appear as an option. How do I change this? My external hard drive is a FreeAgent GoFlex Drive.
Hi, what Format is the external Drive?
They usually come PC Formatted for Fat32/MSdos, or NTFS... is there anything on it now?
How to format your disks...
http://www.kenstone.net/fcp_homepage/partitioning_tiger.html
(To Install OSX on an IntelMac the Drive it needs the GUID Partitioning scheme mentioned at the bottom.)
Thanks to Pondini, Formatting, Partitioning, Verifying, and Repairing Disks...
http://Pondini.org/OSX/DU.html -
Booting from external usb3 drive
Hi, I am trying to boot Linux from an external USB3 drive.
Here are the symptoms.
1. I have uefi boot disabled.
2. I connected a Toshiba USB3 drive to an USB2 port. The device is NOT recognized as a bootable device under Legacy Boot Devices list hence I cannot boot from the USB drive.
3. If I boot from internal HDD, then I can access the USB3 drive without any problems.
4. Plugged in an external USB3 Docking Device to the USB2 socket.
5. Then the USB3 Docking Device is recognized as a Legacy Boot Device and I can boot from the Docking Device.
6. Installed USB3 PCIe card.
7. Connected the USB3 Docking Device to USB3 port.
8. Now I the Docking Device fails to appear as a Legacy Boot Device.
9. Connected the USB3 Docking Device back to the USB2 port and straight away it is now recognized as a Legacy Boot Device.
I would appreciate if any one can give some hints on how to get the USB3 devices recognized as legacy boot devices.
Many thanks.gdesilva wrote:
Hi, I am trying to boot Linux from an external USB3 drive.
Here are the symptoms.
1. I have uefi boot disabled. (did you mean secure boot?) Did you enable Legacy support?
2. I connected a Toshiba USB3 drive to an USB2 port. The device is NOT recognized as a bootable device under Legacy Boot Devices list hence I cannot boot from the USB drive
3. If I boot from internal HDD, then I can access the USB3 drive without any problems.
4. Plugged in an external USB3 Docking Device to the USB2 socket. This won't help
5. Then the USB3 Docking Device is recognized as a Legacy Boot Device and I can boot from the Docking Device.
6. Installed USB3 PCIe card.
7. Connected the USB3 Docking Device to USB3 port.
8. Now I the Docking Device fails to appear as a Legacy Boot Device.
9. Connected the USB3 Docking Device back to the USB2 port and straight away it is now recognized as a Legacy Boot Device.
I would appreciate if any one can give some hints on how to get the USB3 devices recognized as legacy boot devices.
Many thanks.
Help us to help you by posting the following information.
1. The full Model No. and Product No. of the desktop PC - see This HP web document if you don't how to locate the model number and\or product number.
Enter the BIOS after you have setup the bootable Linux hard disk as shown in the following video andenable usb 3.0 configuration in Pre-OS if it is available in the BIOS. That will enable you to use the USB 3.0 port to boot your usb3 external hard disk with Linux installed.
Which flavor of Linux? The video explains how to do this with Ubuntu.
****Please click on Accept As Solution if a suggestion solves your problem. It helps others facing the same problem to find a solution easily****
2015 Microsoft MVP - Windows Experience Consumer -
Migrating via external hard drive doesn't work
I'm migrating from a Powerbook G4 to an iMac G5. For iTunes, I copied all data onto an external hard drive and connected that to the new iMac. But I can neither import the files via the "add to library"* command in iTunes nor can I simply copy the files onto the hard drive of the new iMac. The error message is always the same: "The attempt to copy onto the volume "Macintosh HD" failed. This medium is neither readable nor writable."* Needless to say, that I don't have any problems with the hard drive except for this one. Why is that so?
*This is the translation of the German command/message - the English version actually might be slightly different.Maverick,
Assuming that you're using the standard paths on your PB G4:
Just go to your user directory / Music: Copy the complete "iTunes" folder with all its content & all subfolder to your external disk.
On your G5 also go to your user directory / Music: Now replace the "iTunes" folder with the copy on your ext. disk.
Using this procedure all your playlists/playcounts ... will be migrated as well.
Wenn's komplizierter werden sollte, schick mir einfach eine private Mail an: [email protected] -
I made a bootable disc on an external hard drive, with Yosemite on it. I am running Snow Leopard on my iMac. How can I open the Yosemite disc from the desktop on my iMac? Does the external hard drive need to be connected to my iMac by firewire to do that?
kahjot wrote:
Snow Leopard's Startup Disk pref can’t see Yosemite volumes. So the only way to switch from Snow Leopard to Yosemite is to do what Niel mentioned. Doesn't matter whether it's connected by USB or Firewire, although performance via FW would be faster.
Are you saying that Yos/10.10, as a volume located in a mounted external drive won't appear as an option in Snow Leopard's Startup Disc, in Sys Prefs? I've never heard this one before. AFAIK any mounted volume, regardless of OS, should appear there. I would think that, if it appears in the Boot Picker/Startup Manager it would also appear and could be booted to from Snow's Startup Disk. I can't test this myself, since I don't have Yos. Is what you are saying documented somewhere? -
I have recently updated my OS from Leopard to Snow Leopard but now my external hard drive and even my iPhone are not recognized by my Macbook Pro! Anyone have a suggestion??
Zap the PRAM and Reset the SMC, then try again. If the problem remains, update to 10.6.8 and repeat.
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hi, ive been backing up my computer to an external hard drive (with time machine). When i buy a new macbook will that hard drive put all my info on to the new computer?
When you boot the new machine for the first time, you'll be prompted to import your data from a Time Machine backup.
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Unable to back up external hard drive via Time Machine. Says no room but has back ups from two previous Mac notebooks on it. Tried deleting them and now can't do anything. Any ideas?
As john noted, eventually that external is probably not going to be big enough, but it certainly is for now. The HD just needs enough capacity to cover the amount of data on your internal HD, not the internal HD's total capacity.
Format/partition the external as follows and you should be set to go:
1. Connect the external HD to the MBP.
2. Open Disk Utility on the MBP.
3. Select the external HD in the left pane.
4. Click on the Erase tab.
5. Choose the Format: Mac OS Extended (Journaled).
NOTE: if you want to zero the HD (which I always think is a good idea, but does take time), click on Security Options, click the button for Zero Out Data, click OK. The larger the HD, the longer this will take, in some cases several hours.
6. Click on Erase and wait for the entire process to finish.
7. Click the Partition tab.
8. Click on Volume Scheme: and choose the number of partitions (just one in this situation).
9. Click on the Options button (located underneath the Volume Scheme pane) and select GUID.
10. Click Apply.
11. Quit Disk Utility.
Backup your internal to the external. What application are you using to backup with? I highly recommend both SuperDuper! and CarbonCopyCloner. -
When my old PC died I had the tech guy place my iTunes library on an external hard drive. I just set up my iMac and I cannot get my library on the external hard drive to import to iTunes. I authorized my computer and had the "purchased" songs downloaded from iTunes directly, but I have 3,000+ songs from other sources that I cannot seem to get to. Help! What's the trick?!
maggiedoodle wrote:
When my old PC died I had the tech guy place my iTunes library on an external hard drive. I just set up my iMac and I cannot get my library on the external hard drive to import to iTunes.
Don't import anythiong.
Simply copy the entire /Music/iTunes/ folder from the external to /Music/ on the internal.
Launch iTunes.
That is all you need to do.
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