I have a 512mb version of the SanDisk Cruzer Mini keychain drive. ProductId = 0x5150 (VendorID=0x0781). I am unable to correctly get it to stop crashing the system when using cp(1) to copy large files to it. I patched /usr/src/sys/dev/usb/umass.c as: if (UGETW(dd->idVendor) == USB_VENDOR_SANDISK && (UGETW(dd->idProduct) == 0x5150) { sc->proto = UMASS_PROTO_SCSI | UMASS_PROTO_BBB; sc->quirks |= IGNORE_RESIDUE; } which is the same quirks patch that USB_PRODUCT_SANDISK_SDCZ2_256 (the cruzer mini 256mb) uses. However, this fails to rectify the problem. Notably dd(1) transfers files fine. This is on a RELENG_4 system, cvsup yesterday. Any ideas? thanks, pete -- Peter C. Lai University of Connecticut Dept. of Molecular and Cell Biology Yale University School of Medicine SenseLab | Research Assistant http://cowbert.2y.net/