MacBook :: Usb Drive Not Recognized In Single User Mode

Sep 14, 2009

The title pretty much says it all: When booted in single user mode, I can't get my machine to recognize the USB drive. Here's what I did:

1. inserted usb stick (memorex 4GB traveldrive, msdos filesystem)
2. booted in single user mode (cmd+s after powering on)
3. mount -uw /
3. looked for usb device in /dev
4. ...it's not there! The USB drive shows up as /dev/disk1s1 after an ordinary boot, but in single user mode it's nowhere to be found. It's not just a name issue either: the list of devices that appear in /dev in single user mode is the same whether or not the USB stick is plugged in.

Even more confusingly, out of the 10(?) times I tried this it worked twice: /dev/disk1s1 actually appeared. mkdir /mydirectory; mount -w -t msdos /dev/disk1s1 /mydirectory worked fine, and I was able to read/write from the stick as usual. I have no idea what I did differently those two times. Does anybody know what's going on? I've got a MacBook2,1 running vanilla Leopard.

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Hardware :: External USB Drive Not Detected In Single User Mode

Dec 30, 2009

I have a Macbook Air somehow has lost/ damaged the user DB as none of the none of the user accounts are available. In single user mode, I have checked the users in the password file and my username is not listed. I tried changing the root password but I was unable to logon. I tried deleting the .AppleSetupDone file, but it always hangs on trying to configure computer. I tried adding a user but im getting errors using dscl. My last resort is to just copy the user files using SUM and then reinstall. My problem is that I am unable to detect my usb drive in SUM. It does not show up when I do ls /dev/disk* but I do get a message when I disconnect the usb drive. I do not have an OS disk, nor do I have a superdrive with me. I just want to mount the USB drive and copy the files in SUM.

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[code]...

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L2 Cache (per core): 256 KB
L3 Cache: 6 MB
Memory: 4 GB
Boot ROM Version: MBP81.0047.B27
SMC Version (system): 1.69f4
OS X 10.6.8 

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Feb 22, 2009

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