PROBLEM: (80541) (PATCH ID: OSF510-058) ******** Compaq has determined in laboratory testing that there is a theoretical possibility that during read and write operations to the floppy disk on DS10, DS10L and ES40 AlphaServers and XP900 AlphaStations, a single byte of data may be inaccurately read or written without notice to the user or system. The potential for this anomaly exists only if floppy data read and write operations are attempted while there is extremely heavy traffic on these Alpha systems' internal input/output busses. Although Compaq has observed the anomaly only in laboratory tests designed to create atypical system stresses, including almost constant use of the floppy disk drive, we are supplying this patch to address this potential issue. PROBLEM: (83298) (PATCH ID: OSF510-128) ******** The system may core dump when accessing the FDI floppy. A typical stack trace is below: 1 panic(s = (unallocated - symbol optimized away)) ["../../../../src/kernel/ bsd/subr_prf.c":1401, 0xfffffc0000898b10] i = 0 mycpu = 0 saved_spl = 4 pcpu = 0x3e9 sync_mode = 2 2 biodone(bp = (unallocated - symbol optimized away)) ["../../../../src/kernel/ vfs/vfs_bio.c":1560, 0xfffffc0000bb5070] vp = 0xfffffc00335d0300 s = (unallocated - symbol optimized away) wakeup = (unallocated - symbol optimized away) flags = 861733632 mp = (nil) error = (unallocated - symbol optimized away) n = 669767936 wake_sync = 0 3 fd_strategy_done(0xfffffc00010ded60, 0xfffffe0400f02378, 0xfffffc00010de5d8, 0xfffffc0327ebd900, 0xfffffc03de4f5c00) ["../../../../src/kernel/io/dec/fdi/ fd.c":3045, 0xfffffc0000d75864]