The told me that it's a controller problem with the computer. solved HD Enclosure eSATA solved Slow Transfer Speed of external HD in Powered Esata case 3TB HD inaccessible externally via eSATA or USB ConRoeXFire-eSATA2 compatible with ATI HD 6000 / 7000 I was experiencing slow performance and random disconnects with one of them. External HD w/ 500gb+, eSATA, and 16mb+ cache? check over here
It has me totally confused and I couldn't even ‘find' the device even though I disconnected it from the Mac and mains then reconnected it. At this point I need to physically disconnect the cable and reconnect it for the drive to appear again. What's really weird is that... I just can't get through!I got a LaCie d2 Quandra 1TB external HD, with USB, Firewire and eSATA interfaces.
If I use USB2 there are no problems.I have power management set to never turn off the HDDs and I have a brand new cable on it. I might reconnect the backup HD again to the hub (a different port maybe) and see what happens. UNTIL I started using Windows 7. Each time Carbon Copy Cloner runs, the target drive dismounts after five minutes.
I can still see the mounted drive in Finder but when I click on it it appears empty. I also work remotely and my VM's are on that drive, so suddenly, I'm pretty much unable to do my work. I don't have any power-down settings or anything. All my WD drives began to have problems after about 2 years. NTFS | Default Allocation | FormatPart 1: Insuring you have proper power settings in effect:1.
When connected via eSATA they randomly disconnect themselves. Usb Selective Suspend Blake Sue October 5, 2016 at 5:09 am Just been reading through these posts because I'm trying to find out if other Mac users experience the spontaneous ejection of an external well so far so good i have installed a program that write a smal data file to the drive at a user set time interval.the program is free its called xsleep I also have a NewerTech USB 3 Universal Drive Adaptor that can handle ATA/IDE/ATAPI drives in addition to SATA drives.
My external harddrive from Transcend worked flawless before, but suddenly gets ejected randomly. Since my PowerSpec G208 also has a seemingly undefeatable 3-4 min pre-BIOS cursor delay, a reboot's total round trip is a painful 5+ minutes to final disk quietude. External Hard Drive Randomly Disconnects Ive read numerous threads about this topic and I'm not seeing anyone mention temperature as the problem. Sata Hard Drive Disconnects This usually occurs when the system is idling, such as when it is asleep, but at times may happen in the middle of file transfers or when browsing the drive for
When I first noticed the problem I was running XP sp3 and using a sata 400gb WD. check my blog bungeeMar 1, 2010, 9:16 PM Exact same problem: WD My Book 1TB with Win7 64bit on an AMD 780G board. Actually, when I encountered the spontaneous ejection problem, I had TWO RS-M4T enclosures connected (via two separate Thunderbolt ports on the Mac Pro) -- i.e., not daisy-chained. JiimC August 28, 2015 at 8:18 pm Wow -- I had the "spontaneous disk ejection" problem several times yesterday, after never having had it before. Hdd Disconnecting Itself
So from my perspective, its problem was, I purchased a defective drive (Sorry it might not help you guys in your specific cases.) Just let you guys know my situation here.BTW Sorry, guys, but it's doubtful that you will see a response without me escalating this. This forum is not a support forum. I will escalate this thread and see if I Never hangs or falls offline. this content The HD immediately connected and the Time Machine started running again and I'm thankfully all backup up once more.
Unfortunately simply reading and writing to the drive is not the root cause of the problem, but doing what you can to reduce access to the drive will help prevent spurring Western Digital BTW I had an Nvidia graphics card and everyone was saying that it may be the issue. First things first, make sure you modify your Operating Systems power settings. Especially disabling anything like hibernation or suspend to disk.
Reply With Quote 11-12-10,10:29 AM #13 c627627 View Profile View Forum Posts c(π*199780) Senior Member Join Date Feb 2002 Location Kansas Marvell 88SE6111 Attached Images Reply With Quote 11-14-10,05:37 Create BKU Tasks >2011_2012_2013 2A. Unplugging and re-plugging USB doesn't do it; have to unplug the drive's power AND USB to remount. Sharath Raju November 3, 2016 at 10:45 am I faced the same issue on a Toshiba v63700 external hard disk drive.
I have had nothing but problems with moving files around, drives constantly falling offline, a few other annoying things. These are the steps I took to resolve:1. Email check failed, please try again Sorry, your blog cannot share posts by email. %d bloggers like this: have a peek at these guys JDS August 2, 2016 at 8:48 am I suggest taking it back to the Geniuses, then tell us what they do about it.
But tonight I watched the Hard Drive constantly mount and eject and it moved from mere annoyance to nearly unusable. I mean, some devices generate such issue but others do not on the very same Mac. The external HD won't be disconnected until I try to copy files from VAIO to LaCie or the other way around, it would start the copying process and I can feel Then use the Verify Disk option in the First Aid tab to check the drive for errors.
Same problem. So, last night I updated the video driver to the most recent version (July 2010). nine − seven = Recent CommentsRobert C on Tackle external hard drives randomly ejecting in OS XRajesh on Will your Mac run Microsoft Office 2016?Joe on How to fix deep formatting semschMay 31, 2009, 3:41 AM I was able to fix my problem of the external eSATA HD disconnecting.
I set it to never and have not had a problem since. Device Manager then instead just sees the Virtual Drive.. But twice, drive M has disappeared from sight without my rebooting or anything.What could be the problem?