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Slow Restore via USB
I have two external firewire/USB drives that I use for my regular SuperDuper backups (using firewire): both are partitioned and I use one 500GB partition on each to backup my iMAC internal 500GB drive.
Since my iMac won't boot from these drives when connected via firewire, I have to use USB when I want to boot from the backup. I am now doing a restore: I've booted from one of these backup drive partitions, connected using USB, and I am using smart update to "backup" (restore) to my internal iMac hard drive (which I first erased). However as I speak it has been 6.5 hours and only 6700 files out of 708k files (25GB out of 263GB) have been copied, for an effective copy rate of 0.98MB/s. At this rate it will be several days to complete the restore!! What could the issue be? -Strathglass PS: I am using a 2008 24" iMAC (4GB, 3.06GHz) w/ 10.6.3 No other USB drive is connected at this point. |
#2
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Would it be any quicker to do it via erase, then copy? (Will that be bootable?)
-strathglass |
#3
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That sounds like your USB drive is running in USB 1.0 'mode'. Plugged directly into the Mac?
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--Dave Nanian |
#4
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Dave - Yes, it is plugged DIRECTLY into an iMAC USB port.
But operations seem normal otherwise, not excessively slow to start apps etc. Any ideas? Any way to test your hypothesis? -strathglass |
#5
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Perhaps an AntiVirus program? We don't access the hardware at all, so any low speed problems are going to be due to generally slow I/O to the source/destination (hardware, ports, cables, etc), or 3rd party interference (e.g. AntiVirus)...
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--Dave Nanian |
#6
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I don't have any antivirus program, so that is not it.
Maybe the drives I have just aren't very good for a Mac?!?!? I will try next time using one of my name-brand WD external drives. (The slow one is a Seagate drive in a 3rd party firewire/USB enclosure.) At least the restore is working. Based on progress to date it looks like it will indeed take 3 full days (i.e. 1 more day)! Regards, Strathglass. |
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