tilllt Posted March 7, 2010 Share Posted March 7, 2010 Hello, after having problems with mounting and or installing software from an external WD Mybook (Pro Edition) Disk, i decided to investigate a bit on the source of the problem. I have a Macbook Pro and a EP45-UD3P based Hackintosh, with 10.5.7 and 10.6 (dualboot) installed. I have a large disk image which mounts fine on the MBP and the software installs fine, using any kind of connection (fw400-400, fw400-800, usb cable). I can copy the file to the external drive and the file is intact, mounts and installs (i also checked md5 checksums, which are fine on any transfer to or from the MBP). When connecting the disk to the Hackintosh, the weirdness starts. When connecting the drive with a 400-800 FW Cable, checksum fails, disk image and install is corrupted. This happens when writing and reading from the external Drive. With a 400-400 FW Cable things are fine. With a USB Cable things are fine. Is this a known problem? Is there a way to solve this? I think it is very weird that the finder never complained about disk corruption or not being able to copy things, but the md5 checksums start getting wrong, the moment the disk is connected with a 400-800 cable... any suggestions? edit: this is not a SL specific problem, it also happens on the 10.5.7 install i have but i didnt know which subforum to post it to as this is more like a general post install problem Link to comment https://www.insanelymac.com/forum/topic/212453-weird-firewire-problem-with-ep45-ud3p-hackintosh/ Share on other sites More sharing options...
tilllt Posted March 8, 2010 Author Share Posted March 8, 2010 Maybe somebody with a EP45-UD3P Setup who can spare the time to check if this is only my system or a general problem, that would be great... i used this md5 gui tool to check the files integrity: http://www.eternalstorms.at/md5/ the rest is simple, calculate checksum of a locally stored file, copy to external disk (if available to a WD Mybook or another disk which has fw400 & 800 connectors) using a 400-800 FW cable calculate md5 checksum copy the same file with usb or fw400-400 cable calculate checksum compare if the checksums are the same... Link to comment https://www.insanelymac.com/forum/topic/212453-weird-firewire-problem-with-ep45-ud3p-hackintosh/#findComment-1425245 Share on other sites More sharing options...
trwoolley Posted March 8, 2010 Share Posted March 8, 2010 Hello, after having problems with mounting and or installing software from an external WD Mybook (Pro Edition) Disk, i decided to investigate a bit on the source of the problem. Is this a known problem? Is there a way to solve this? I think it is very weird that the finder never complained about disk corruption or not being able to copy things, but the md5 checksums start getting wrong, the moment the disk is connected with a 400-800 cable... it to as this is more like a general post install problem tillit - There have been known conflicts between some WD external drives, notably MyBook versions. See here: http://www.macintouch.com/readerreports/ha.../topic3970.html Search the above thread (command-F) for "mybook" at the top right. There are 94 entries. Also, go to the Carbon Copy Cloner forum for a scathing review (stickie at top) of WD drives and the problems they cause for CCC. I have always had great success with WD internal bare drives, but my external 500GB firewire WD MyBook was a giant headache. I tore it down and mounted it internally in my Hackintosh for a backup, but even after reformatting it as a GUID partition it is flakey and now refuses to mount. The "button" technology WD uses in their externals is simply incompatible with Macs, Hackintosh or Apple supplied. Link to comment https://www.insanelymac.com/forum/topic/212453-weird-firewire-problem-with-ep45-ud3p-hackintosh/#findComment-1425286 Share on other sites More sharing options...
tilllt Posted March 8, 2010 Author Share Posted March 8, 2010 Thanks for the reply. I would be convinced of WD Mybooks being a Mac incompatible external drive, if i ever had any problems with them... over the last couple of years i stacked up around 4TB in several different MyBook enclosures and never had any problems with them, at least not with my Macbook Pro. The problems specifically occur when connected to my Hackintosh - and when connected with the 400-800 cable and i really would be interested if this is reproducible on another system... Link to comment https://www.insanelymac.com/forum/topic/212453-weird-firewire-problem-with-ep45-ud3p-hackintosh/#findComment-1425300 Share on other sites More sharing options...
trwoolley Posted March 8, 2010 Share Posted March 8, 2010 Thanks for the reply. I would be convinced of WD Mybooks being a Mac incompatible external drive, if i ever had any problems with them... over the last couple of years i stacked up around 4TB in several different MyBook enclosures and never had any problems with them, at least not with my Macbook Pro. The problems specifically occur when connected to my Hackintosh - and when connected with the 400-800 cable and i really would be interested if this is reproducible on another system... The problems were exacerbated with Snow Leopard, as I understand it. Check Apple Discussions here: http://discussions.apple.com/search.jspa?o...Go&q=mybook or here: http://forums.bombich.com/viewtopic.php?t=11152 Link to comment https://www.insanelymac.com/forum/topic/212453-weird-firewire-problem-with-ep45-ud3p-hackintosh/#findComment-1425304 Share on other sites More sharing options...
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