12-17-2008 05:09 PM
Hi every body,
After using SATA 160 GB for 1.5 year, recently i exprienced that my windows start up very slow. I used two different HDD speed test programs that show me the max read speed only 3.5 MB/s. I also tested on my another seagate SATA 250 GB that i have just bought, the max read speed about 80-90 MB/sec. So what is problem with my 160 GB HDD? I did test this HDD with Seatool, all tests are passed. So will seagate fix my HDD if I send them?.
Anybody got this problem before, please give me an idea.
08-19-2009 06:10 AM
08-19-2009 06:10 AM
I have the same problem : 2 Maxtor HD Sata in my PC:
1/ one Maxtor DiamondMax 10 (ATA/133 and SATA/150) with a benchmark of +- 63 MB/s (Sata 1) . This is OK
2/ one Seagate Maxtor DiamondMax 21 MAXTOR STM3320820AS (Sata 2, but I had to place the jumper to downgrade it to Sata 1 due to motherboard limitation) with a bench mark of +- 3,5 MB/s This is NOT OK.
Motherbord : ASUS A8V-E SE
Don't you think the 2nd slow HD might have poor performance due to its donwngrade to Sata 1 ? Have you any other idea or hint ?
Thank you for any suggestion
08-19-2009 06:58 AM
Yes, I figured you were on holiday, since it's August.
I hope you had a very restful and enjoyable time.
I have a suggestion also for judging drive speed -
1) Copy several GB of data, in smaller files, to a new folder and time it.
2) Copy a few large files, also in the GB range, to a new folder and time it.
Try that type of thing in various different drive configs.
08-19-2009 04:57 PM
You guys suffering slow boot times should do this
1 - Scan for virus
2 - Scan for Spyware
3 - Scan for Malware
4 - Check interface cable, i.e IDE/Sata lead, any kinks or tight turns in the cable can cause problems
5 - Reseat memory and PCi cards.
this should be your 1st fix attempts, if these don't sort it you could have a virus in your bios if you've not protected it, highly unlikely but should you suspect it a bios flash should remove anything unwanted (remember to follow MB manufactures instruction if you do this) failing that a full format of the drive, and if that fails it looks like RMA time or new drive time if it's an old drive out of warranty, personally I suspect a corrupt O/S boot file myself.
08-21-2009 02:56 AM
I'm afraid that the bad transfer time I'm experiencing is not related to my boot time.
Indeed, my boot time is quite correct and moreover my PC boots on the "old" HD, the one that is working correctly and not on the slow one.
It's just copying big files on the slow HD that takes an unusual and unacceptable long time for such a HD !
Benchmarking this HD shows that the use of the CPU is +- 90% opposite to +- 10% for the old HD when copying, reading, etc....
Must know that I check regularly for viruses, malware, spyware etc ... nothing found to date .
I can check the Sata cable, but don't you think that if there was something wrong with it, the HD would not work at all ?
My feeling (but it's only a feeling) is that it might come either from the downgrade from Sata2 to Sata1 (to comply motherboard ASUS a8v-e se) or from the motherboard itself ?
Have you ever heard anything in this direction ?
08-21-2009 09:44 AM
90% CPU usage suggests something is going on that should not be. At 90%, the CPU is very likely the bottleneck (note: 90% and 100% are probably not different in this case).
One thing that it might be: your virus scanning software might get in the middle of any transfer.
Another is that your HD driver may be using PIO mode instead of some DMA mode. In Linux, I've seen that happen if the driver gets certain kinds of errors: it tries to use the drive in successively more basic modes. PIO will take way more CPU. I don't know how you tell if this has happened in MS Windows; in Linux you can use hdparm.
Modes are partly described here and places it links to: http://en.wikipedia.org/wiki/Parallel_ATA#ATA_stan
Perhaps there are a lot of error messages being logged and that takes time. Have you seen any logging like that?