External Hard Drives not recognized now by 10.5.7

I updated without the drives plugged in like previously suggested. I use an external usb dock I plug my 500g Seagate sata drive into. It is called BlacX by Thermaltake purchased from a best buy. Now no drive is recognized that I plug into the blacX. They worked with no problems before the update. I use the drive as my time machine backup. I checked Thermaltake's website but did not see any new driver or firmware updates. Is this something that can be fixed on apple's end since the external drive bay worked fine in 10.5.6 or am I screwed now?

Macbook 2ghz core 2 duo, Mac OS X (10.5.7), 2 gigs ram

Posted on May 18, 2009 4:47 AM

19 replies

deggie

Level 10

167,525 points

May 24, 2009 8:39 AM in response to shimatron

Contact Buffalo directly, according to a post in another thread by someone in Japan they offered to replace the chipset in his enclosure to solve the issue.

ekrock

Level 1

0 points

Jun 15, 2009 6:47 PM in response to deggie

Buffalo has posted a patch. They say: "This update patches Mac OS 10.5.7 to correct Apple's USB MSC driver misbehavior with older Buffalo Drivestation models."

See here: http://forums.buffalotech.com/buffalo/board/message?board.id=0101&thread.id=9986 &view=bydateascending&page=4

Ginny C.

Level 1

11 points

Jun 17, 2009 4:50 PM in response to George Matthews

I have a Maxtor Personal Storage external hard drive which was working fine with my new iMac which is running Mac OS X (10.5.7). I bought it a few weeks ago. I recall doing an update using SU. Wasn't paying any attention as things were working okay. Then noticed that the Maxtor was making clicking sounds. It was connected and showing up on the desktop but I was concerned about the sounds so disconnected it and turned it off. Left it unconnected for maybe a week. Then reconnected it. Discovered that it wasn't showing on the desktop. In Disk Utility one icon shows for the Maxtor but it doesn't show an option to verify or repair it. I checked System Profiler and it does show up there. I connected the Maxtor to my old Powerbook which has an earlier OS. I think it is the last version of Leopard. The Maxtor's hard drive shows up fine on that desktop. I'm relieved that my external drive is still functional but not happy that now it can't be seen by my iMac. I've been looking through the discussions for a solution.

Ginny C.

Level 1

11 points

Jun 18, 2009 8:26 AM in response to Ginny C.

Today I switched the cable connecting the iMac to the Maxtor from one Firewire port on the back of the Maxtor to the other. Then turned everything back on and the Maxtor was back on the iMac's desktop! Files and folders were accessible. There was a new folder titled "lostfound that was on the Maxtor that had not been on there before and is 583.2 MB in size. Inside it are 844 files with names that begin with "dir_" followed by a 7 digit number. I would like to delete that folder but haven't yet just in case deleting it will cause some other problem. I turned off Time Machine yesterday so am not attempting to back up anything to the Maxtor right now. Does anyone know where the lost+found folder came from and if I can delete it with no negative consequence?

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External Hard Drives not recognized now by 10.5.7