OS X :: Power Loss And Hard Drives Always Mounted
Mar 30, 2009
I am using an external hard drive with Airport Extreme for Time Machine. Should I be worried about my data in an event of power loss because the drive is always mounted? Has anyone loss a drive due to power loss and what have you done to fix it or prevent it? What are you using as backup power and why? I know I can go with Drobo, but are there other lower cost options?
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Sep 8, 2009
I have two USB hard drives connected to my iMac. Since installing SL, I have experienced data loss on both. Example: I open a folder in the Finder. I then CMD-UP to move to the next level up, only to find that the folder I was just viewing is no longer in the list.
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Mar 28, 2012
This is an intermittent problem. I have a dual processor PowerMacG5 2GHz. The computer won't boot up. Used disc utility to find out that no hard drive was detected. Thought hard drive was bad. Installed new hard drive. Installed Tiger. Rebooted. Computer won't boot, disc utility shows no hard drive. Unplugged computer. Removed hard drive. Started disc utility from disk. Turned off machine. Unplugged. Installed hard drive. Started up machine. Machine runs fine. Now turned machine off and tried to restart again, now no hard drive detected again. Redid unplugging and reinstallation of hard drives. Now both hard drives works fine. This problem can be repeated. I prefer not to ever turn off my machine again. Startup procedure with unplugging, reinstallation of hard drives is just a pain.
Info:
PowerMac, Mac OS X (10.4.11)
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Oct 30, 2007
I have got myself in a very sorry state. I have a G5 powermac with two harddrives, one that the system runs on and the other that i have called STUFF and ....well has all my stuff on it. While on the phone talking i managed somehow( dont ask) to drag the STUFF hard drive into the Trash and it disappeared in a puff of smoke, and well... i need it back.
I cant find the HD within finder, but managed to find it while looking in disc utility but have not been able to drag it to desktop or anything like that.Anyway, if you have any ideas as to how i can go back in time and get my HD i would be seriously grateful.
Information:
g5
Mac OS X (10.4.6)
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Jun 9, 2012
I have a IBM Deskstar ATA/IDE hard drive, model DTLA-305040 that came out of a Power Mac G4 (Quicksilver) whose power supply died. I'm trying to install the hard drive in the open bay of a Power Mac G5 9,1 - A1093 with a 1.8 GHz processor, which (I think/guess) takes a SATA hard drive. Is there a cable I can use to make the hard drive "compatible" inside the G5? Or would it be better to just get a cable to access the hard drive externally, copy the data off it and then be done with the old hard drive? It's pretty old and apparently these IBM Deskstar drives had a lot of issues.
Info:
Mac Pro, Mac OS X (10.7.4), Model 5,1/2.4 GHz/8 core (mid 2010)
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Oct 17, 2008
Is possible to just swap the 500g hard drive into the G5 Power Tower instead of cloning the hard drive - Both PPC ?
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Oct 15, 2009
as topic states, what do you think the difference in power consumption between 5400rpm and 7200 rpm?
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Feb 18, 2009
I run MBP without battery 99% of the time to safe its 300 or so cycles and I occasionally trip the mac safe adapter (which i find gimmicky and annoying) by maneuvering MBP around when sitting down & the cable gets snagged momentarily on corner of coffee table etc and out goes the power !!
Is this causing any damage ?!? I havent noticed any ill effects.
I also understand from reading other threads how the processor speed reduces without battery but thats ok considering most of my use is limited to web browsing..
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Oct 29, 2007
For the past two weeks or so I have been getting a lot of Kernel Panics. Most of them happen when I select Restart or Shutdown. There have also been cases of Final Cut Pro crashing regularly, but I think the Kernel Panics are far more important to diagnose. I have not changes any hardware for at least a year. The machine has 4.5gb of RAM and 40% of the system drive free. I have run Disk Utility to repir the disk as well as the permissions, all coming back with no errors. The only thing that I can think of that changed is that I purchased and ran Disk Warrior 4. It seemed to help tremendously with performance, however, it is the only thing that I can think of that has changed. I am also suffering from some performance loss as well. I get at least one Kernel Panic a day. I have no idea what the KP mean, but they all look similar.
Information:
G5 Dual 2.5ghz
Mac OS X (10.4.10)
4.5gb RAM - Final Cut Studio - Adobe Production Premium
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Jul 15, 2009
I have Seagate FreeAgent Go 250 GB USB Harddrive. I don't know why but I cannot access my drive. When i plug usb cable, nothing appears on desktop. Only Disk utility can see Drive. but it seems in grey font. when i click mount, it gives error that says repair disk. But when i start repair disk, nothing is happening. Progress bar is not moving. Just preparing bar like this
[URL]
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Mar 3, 2008
Hook up a $3K machine to a $1.5K display and have to hard power down your $3K machine to get the picture back.When I boot everything is fine. If I change input to TV or power off the display, when I power back up or switch back to hdmi input screen displays error, can't read signal check output device. I have read on this forum about a issue similar with ATV but not with MacPro. In my google searches I read some issues with Vista, but no resolution... thought to be a ATI driver problem. Does anyone know of a tweak to fix the ATI 2600 XT to remember the tv signal after you change inputs or power off the display?
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Feb 19, 2012
i accidentally hit the power switch on the wall during an upgrade (might even have been a firmware upgrade, I didn't really look at what was going on). Anyway, now it hangs on the silver Apple logo screen with a spinny wheel on reboot. It's only 3 months old, it's the $599 model.
What to do? I see that you can download firmware restoration disks but they appear to be limited to earlier versions of the Mac mini.
Info:
Mac mini, Mac OS X (10.7), I think the OS is OSX 10.7...
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Nov 30, 2014
I recently tried to install OS X Yosemite. unfortunately during the install my laptop was unplugged and the installation failed mid way through. Each time I start my mac I get to login screen and after logging in get an error message and told to restart and try again - which does not resolve the issue. Guest login do work to the safari screen.
The error message reads: You need to restart your computer. Hold down the power button until it turns off, then Press the power button again. Behind system code, including:
panic(CPU 2 caller 0xffffff 80005418bf):
"process 1 exec of /sbin/launchd failed, errno 45"@/sourcecache/xnu/xnu-1699.32.7/bsd/kern/kern_exec.c:3546
Debugger called: <panic>
Backtrace (CPU 2), Frame: Return Address
0Xffffff80e8423e00 : 0xffffff8000220792
7 more lInes like the one above
BSD process name corresponding to current thread: init
Info:
MacBook Pro (15-inch Late 2011)
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Apr 23, 2009
I got this big hard drive and attached it to my Airport Extreme. I can get to it just fine, however, I would ideally like to make it so this drive is ALWAYS mounted on my computer. I've got my iTunes and iPhoto libraries on here, and it seems like every time I wake my computer or reboot, I need to reconnect to the drive, otherwise iTunes/iPhoto freak out because they can't find it. Is there a way I can tell my Mac to stay connected to the drive, and automatically look for it if it's not mounted?
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Jun 9, 2008
I have a Macbook (blackbook) running OS X 10.5.3 and a 160GB Firelite HD that connects via USB. It use to show up and run just find but lately it hasn't been showing up on the desktop or in Finder. However, it shows up in Disk Utility, which shows that nothing is wrong with it. How do I get it to show back up on the desktop/finder?
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Apr 13, 2012
I have recently started working from home on my mac - in the last 2 weeks 30gb of space has dissappeared off my hard drive - i cant find it
Info:
iMac (24-inch Early 2008)
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May 12, 2012
I lost around 6 gigs of hd space after I installed 10.7.4 update. Same thing happens with a clean install.
Info:
Mac mini, Mac OS X (10.7.3)
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Sep 13, 2009
I'm looking at the specs page for the MacBook Pro and it reads this...
Your MacBook Pro comes standard with a 5400-rpm Serial ATA hard drive. Choose a hard drive with a faster speed for greater performance. Or you can choose a solid-state drive that offers enhanced durability.
Basically suggesting that the HDD option has a performance advantage over the SSD, but is this the case? I always thought SSDs could read & write quicker because they use solid-state flash memory as opposed to hard disks.
I want to go with the 256GB SSD but I want to know how it ranks in speed.
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Jan 25, 2009
I have a Imac 20 with a small 3.5 hard drive and I have bought a bigger 360 gig 3.5 hard drive to replace the old one. I have the new one in an external case with USB 2.0 right now. Is there some way I can transfer the entire contents of the old hard drive on to the new one and then swap out the old drive with the new drive and not miss a beat?
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Sep 5, 2010
I have to hard drives in my powermac. And I am running out of space with the one that has the OS on it.
I want to make the 2 internal hard drives i have appear as one so i can still install and use things that say "must have mac OS installed on this drive to use" or whatever.
i've heard of people using RAID to join them, but i want details on how i could do this.
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Jun 5, 2012
Using Macbook Air, get low battery warning. Finish what I'm doing, close screen at 0:00 remaining time. Apparently it didn't sleep in time before battery drained completely, since when opening after plugging a minute or two thereafter it went into cold restart. (Btw, I've had the machine just shut down instead of going into deep sleep on low battery a few times before, would like to fix this too...)
All my programs reopened, except Mail loaded the "Welcome to Mail" splash screen, with my name and one of my email addresses autofilled, but none of my regular accounts. I canceled and it closed. Repaired permissions, verified disk, no problems. After searching the forums, turned invisible files on, fired up my Time Machine backup, and restored a recent pre-crash version of Mail preferences plist in user/Library/Preferences. Start up Mail again: same "Welcome to Mail" splash screen.
Called Apple Care, they wanted me to do a full restore from Time Machine backup. But my backup is a week old and I will lose data not covered in the meantime--I still want to find a way to get Mail back working without doing this. The only other suggestion was clear caches, restart, try again. I fired up Onyx, executed maintenance scripts, rebuilt Mail's envelope index, cleared system and user caches, and still no dice.
how to get Mail to recognize my old preferences plist instead of heading straight to the splash screen? To restore to all my email again without a full restore from week old back up?
Info:
MacBook Air, Mac OS X (10.7.4), 13" 2.13 C2D 4GB ram
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Oct 3, 2007
Except for the drive with the system on it the drives (whether CDs, DVDs, Sata Drives, internal drives, Firewire, network,...) drives only mount randomly. And often after ejecting them they often don't disappear and stay on the desktop. I've got a couple of Raids (one internal and one external Sata II) and one of them is hardly ever recognized on startup and I have to get it in the disk utility. Most recently even toast has started to fail if asked to copy cds or dvds (I presume because they are not mounted proplery).
Information:
G5 Quad
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Nov 13, 2007
I have a PowerMac G5 dual 2.3 ghz w/ 1gb ram and a G4 Quicksilver with 2 internal ATA drives
Internal drive specs : 2 IBM 180GB IDE/ATA-5 Deskstar 8MB 180GXP 7200 rpm
There is also an ATA card that was installed to be able to run these drives in the G4 - don't have specs available right now. Is it physically possible to transfer these drives to the G5? Will I have to transfer the card also? Is it likely to cause any problems -compatibility , speed, etc? The drives are currently full of media - how risky is it to move them from one system to another?
Information:
PB G4, G4, G5
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Dec 27, 2007
Is it possible to install 4 SATA drives into a G5 tower? I didn't open it up yet cause I have to move so much material to get to it. I'm assuming you can purchased a SATA PCI card but is there room in the case for 2 additional drives?
Information:
PowerMac G5
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Nov 12, 2010
I have an aluminum numeric keyboard. and when I plugged in two scandisk Cruzer usbdrives it said that one of them wasn't getting enough power. So I read online and saw that some people said windows can provide enough power for both. So I turn on my virtual windows machine (which automatically mounted the usb drive that was connected) and then my mac was able to mount the second usb drive! But when I let windows try to host both drives in the keyboard windows said it couldn't power both devices either! this may just be because it was a vm.
But my point is at one time I had access to both drives in my keyboard(with one os for each one) but when using just a single one it wont work. Is there any way to change a setting so I can push out more power to my usb keyboard? I'm perfectly fine with terminal and editing files, but is there a setting to change anywhere?(it's only getting 300mA and the usb drives need 200 each and the keyboard itself needs 20 so that all fits in the 500mA range).
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Dec 7, 2007
Thinking of using 500GB and 750GB internal drives for a raid 0 startup disc (software raid obviously)?
Information:
Dual 2.5 G5
Mac OS X (10.4.11)
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Aug 27, 2009
Does anyone have any experience daisy-chaining FW 800 drives on a MBP? I've got one right now, but am thinking of adding another but I don't want to use an AC adapter if I don't need to. Will the MBP give enough juice to run 2 daisy-chained FW 800 drives (2.5")? I've got the late 08 unibody 15".
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Mar 14, 2012
My trusty PPC g5 from 2004 has died, or at least it won't start. It shows the grey apple screen, but no spinner, and after a few minutes the fans kick in and build to a wind-tunnel noise.
I don't have a backup of this machine, or it's other drive, so I am nervous about taking it into Apple where they might just wipe it.
Also, I surprisingly CAN start it up in Firewire disk mode, and both drives seem to be OK when accessed from another computer.
So I've copied off the most important things, and I will probably try to make clones. But before I finally cart it into Apple (where it will probably cost more than its worth to fix it),
Info:
Powermac G5, Intel iMacs, Mac OS X (10.6.2)
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Sep 22, 2010
I'm hoping someone more knowledgeable than myself can help me out. I have a 2006 Intel-based Mac Pro:
Processor: Two 2.66GHz Dual-Core Intel Xeon processors
Ram: 6GB (two 512MB) of 667MHz DDR2 ECC fully buffered DIMM
HDD Bay 1: 250GB Serial ATA 3Gb/s; 7200 rpm; 8MB cache
OSX: Tiger
I need to upgrade to Snow Leopard to be able to use newer Leopard & above only versions of software ie FCP, Aperature, etc.
The issue is that I would like to keep the Tiger OSX as I run Pro Tools LE 7 on it. Upgrading to Snow Leopard would render Pro Tools LE 7 incompatible and I would have to buy it again.
So here's what I'm thinking. I would like to install a secondary HDD in Bay 2 and install Snow Leopard on it.
Is it possible to have OSX Tiger on the HDD in Bay 1 and have OSX Snow Leopard on the HDD Bay 2? Could they each be a different startup to be selected via System Preferences or at bootup? I would only want to run one OS at any given time.
If so what would be a workflow for installing the 2nd HDD and setting it up with OSX Snow Leopard.
Also, compatible hard drives for the 2006 Intel Mac Pros seem to be harder to find now. I called Apple and they no longer sell any compatible internal HDDs.
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