Hello friends ,

hope you are doing fine .

i have this external samsung drive HM100UX, which spins just fine ( no odd clicks ) but not detected at all by Linux .

log is like this

***********************************************
[ 60.928274] usb 1-1: new full-speed USB device number 2 using uhci_hcd
[ 61.052284] usb 1-1: device descriptor read/64, error -71
[ 61.280236] usb 1-1: device descriptor read/64, error -71
[ 61.500212] usb 1-1: new full-speed USB device number 3 using uhci_hcd
[ 61.620188] usb 1-1: device descriptor read/64, error -71
[ 61.848180] usb 1-1: device descriptor read/64, error -71
[ 62.068194] usb 1-1: new full-speed USB device number 4 using uhci_hcd
[ 62.476158] usb 1-1: device not accepting address 4, error -71
[ 62.592179] usb 1-1: new full-speed USB device number 5 using uhci_hcd
[ 63.000155] usb 1-1: device not accepting address 5, error -71
[ 63.004212] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 79.104278] usb 1-1: new full-speed USB device number 6 using uhci_hcd
[ 79.224213] usb 1-1: device descriptor read/64, error -71
[ 79.452237] usb 1-1: device descriptor read/64, error -71
[ 79.672218] usb 1-1: new full-speed USB device number 7 using uhci_hcd
[ 80.200247] usb 1-1: device descriptor read/64, error -71
[ 80.428215] usb 1-1: device descriptor read/64, error -71
[ 80.644237] usb 1-1: new full-speed USB device number 8 using uhci_hcd
[ 81.056210] usb 1-1: device not accepting address 8, error -71
[ 81.172247] usb 1-1: new full-speed USB device number 9 using uhci_hcd
[ 81.580210] usb 1-1: device not accepting address 9, error -71
[ 81.583879] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 129.856274] usb 1-1: new full-speed USB device number 10 using uhci_hcd
[ 129.976278] usb 1-1: device descriptor read/64, error -71
[ 130.200240] usb 1-1: device descriptor read/64, error -71
[ 130.824217] usb 1-1: new full-speed USB device number 11 using uhci_hcd
[ 130.944245] usb 1-1: device descriptor read/64, error -71
[ 131.168239] usb 1-1: device descriptor read/64, error -71
[ 131.384241] usb 1-1: new full-speed USB device number 12 using uhci_hcd
[ 131.796207] usb 1-1: device not accepting address 12, error -71
[ 131.908240] usb 1-1: new full-speed USB device number 13 using uhci_hcd
[ 132.316213] usb 1-1: device not accepting address 13, error -71
[ 132.319436] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 159.036283] usb 1-1: new full-speed USB device number 14 using uhci_hcd
[ 159.156283] usb 1-1: device descriptor read/64, error -71
[ 159.788241] usb 1-1: device descriptor read/64, error -71
[ 160.004250] usb 1-1: new full-speed USB device number 15 using uhci_hcd
[ 160.124234] usb 1-1: device descriptor read/64, error -71
[ 160.348241] usb 1-1: device descriptor read/64, error -71
[ 160.564242] usb 1-1: new full-speed USB device number 16 using uhci_hcd
[ 160.976214] usb 1-1: device not accepting address 16, error -71
[ 161.088243] usb 1-1: new full-speed USB device number 17 using uhci_hcd
[ 161.496211] usb 1-1: device not accepting address 17, error -71
[ 161.499441] hub 1-0:1.0: unable to enumerate USB device on port 1
[ 292.816254] usb 1-1: new full-speed USB device number 18 using uhci_hcd
[ 292.936338] usb 1-1: device descriptor read/64, error -71
[ 293.160201] usb 1-1: device descriptor read/64, error -71
[ 293.376106] usb 1-1: new full-speed USB device number 19 using uhci_hcd
[ 293.496211] usb 1-1: device descriptor read/64, error -71
[ 293.720162] usb 1-1: device descriptor read/64, error -71
[ 293.936270] usb 1-1: new full-speed USB device number 20 using uhci_hcd
[ 294.352072] usb 1-1: device not accepting address 20, error -71
[ 294.464167] usb 1-1: new full-speed USB device number 21 using uhci_hcd
[ 294.872065] usb 1-1: device not accepting address 21, error -71
[ 294.872159] hub 1-0:1.0: unable to enumerate USB device on port 1

***********************************************

any hints ?

well appreciated

Send to a data recovery professional with the tools and experience to safely and properly diagnose.

_________________
Luke
Recovery Force Data Recovery

Send it to an electronics professional (eg your local TV repairman), or check the following threads:

viewtopic.php?f=1&t=25581&p=174993
viewtopic.php?f=7&t=26304&p=179559

_________________
A backup a day keeps DR away.

This thread may be of interest, too:

viewtopic.php?f=1&t=30079

_________________
A backup a day keeps DR away.

Many thanks Frank .

charming as usual .

working on'em now .