Hello, when attaching an external USB disk I get the following traceback and the kernel does not see the partitions [0]. sgdisk however is able to access the partition table [1] Plugging it in again, makes the kernel see the partition table (full dmesg attached) Hardware this time is Lenovo X1 carbon - no more Apple stuff coming from my side for a while. Cheers, Nico p.s.: please cc on reply [0] [52536.209629] ehci-pci 0000:00:1a.0: power state changed by ACPI to D0 [52536.311108] ehci-pci 0000:00:1a.0: setting latency timer to 64 [52536.311475] ehci-pci 0000:00:1d.0: power state changed by ACPI to D0 [52536.414356] ehci-pci 0000:00:1d.0: setting latency timer to 64 [52536.414561] xhci_hcd 0000:00:14.0: power state changed by ACPI to D0 [52536.427470] ehci-pci 0000:00:1d.0: power state changed by ACPI to D3cold [52536.517536] xhci_hcd 0000:00:14.0: setting latency timer to 64 [52536.524237] usb 3-1.2: new high-speed USB device number 7 using ehci-pci [52536.723735] xhci_hcd 0000:00:14.0: power state changed by ACPI to D3cold [52536.770034] Initializing USB Mass Storage driver... [52536.770549] scsi6 : usb-storage 3-1.2:1.0 [52536.770758] usbcore: registered new interface driver usb-storage [52536.770762] USB Mass Storage support registered. [52544.272683] scsi 6:0:0:0: Direct-Access Samsung STORY Station 3 1AJ1 PQ: 0 ANSI: 0 [52544.274383] sd 6:0:0:0: [sdb] 1953525168 512-byte logical blocks: (1.00 TB/931 GiB) [52544.275988] sd 6:0:0:0: [sdb] Write Protect is off [52544.276002] sd 6:0:0:0: [sdb] Mode Sense: 23 00 00 00 [52544.277876] sd 6:0:0:0: [sdb] No Caching mode page present [52544.277889] sd 6:0:0:0: [sdb] Assuming drive cache: write through [52544.282306] sd 6:0:0:0: [sdb] No Caching mode page present [52544.282315] sd 6:0:0:0: [sdb] Assuming drive cache: write through [52544.284699] kworker/u:1: page allocation failure: order:4, mode:0x10c0d0 [52544.284711] Pid: 12117, comm: kworker/u:1 Tainted: G W 3.8.3-2-ARCH #1 [52544.284716] Call Trace: [52544.284739] [] warn_alloc_failed+0xe9/0x140 [52544.284753] [] ? drain_local_pages+0x16/0x20 [52544.284766] [] __alloc_pages_nodemask+0x7b8/0xa40 [52544.284782] [] alloc_pages_current+0xb8/0x180 [52544.284793] [] __get_free_pages+0xe/0x50 [52544.284803] [] kmalloc_order_trace+0x39/0xf0 [52544.284818] [] check_partition+0x30/0x210 [52544.284829] [] rescan_partitions+0xad/0x290 [52544.284843] [] __blkdev_get+0x306/0x4d0 [52544.284854] [] ? find_inode+0x38/0xb0 [52544.284865] [] blkdev_get+0x195/0x2f0 [52544.284873] [] ? unlock_new_inode+0x59/0x80 [52544.284884] [] ? bdget+0x130/0x150 [52544.284895] [] add_disk+0x3a4/0x490 [52544.284932] [] sd_probe_async+0x129/0x1e0 [sd_mod] [52544.284954] [] async_run_entry_fn+0xaa/0x1c0 [52544.284966] [] process_one_work+0x15a/0x4e0 [52544.284976] [] worker_thread+0x15d/0x400 [52544.284986] [] ? rescuer_thread+0x240/0x240 [52544.284998] [] kthread+0xc0/0xd0 [52544.285011] [] ? perf_trace_xen_mmu_set_pte_at+0x10/0x100 [52544.285023] [] ? kthread_freezable_should_stop+0x70/0x70 [52544.285035] [] ret_from_fork+0x7c/0xb0 [52544.285046] [] ? kthread_freezable_should_stop+0x70/0x70 [52544.285052] Mem-Info: [52544.285057] Node 0 DMA per-cpu: [52544.285065] CPU 0: hi: 0, btch: 1 usd: 0 [52544.285071] CPU 1: hi: 0, btch: 1 usd: 0 [52544.285076] CPU 2: hi: 0, btch: 1 usd: 0 [52544.285080] CPU 3: hi: 0, btch: 1 usd: 0 [52544.285084] Node 0 DMA32 per-cpu: [52544.285091] CPU 0: hi: 186, btch: 31 usd: 0 [52544.285097] CPU 1: hi: 186, btch: 31 usd: 0 [52544.285102] CPU 2: hi: 186, btch: 31 usd: 0 [52544.285107] CPU 3: hi: 186, btch: 31 usd: 0 [52544.285110] Node 0 Normal per-cpu: [52544.285117] CPU 0: hi: 186, btch: 31 usd: 0 [52544.285122] CPU 1: hi: 186, btch: 31 usd: 0 [52544.285127] CPU 2: hi: 186, btch: 31 usd: 0 [52544.285132] CPU 3: hi: 186, btch: 31 usd: 0 [52544.285146] active_anon:325339 inactive_anon:53539 isolated_anon:0 active_file:396016 inactive_file:376501 isolated_file:0 unevictable:2261 dirty:142 writeback:0 unstable:0 free:142486 slab_reclaimable:661015 slab_unreclaimable:10370 mapped:21500 shmem:54173 pagetables:8360 bounce:0 free_cma:0 [52544.285160] Node 0 DMA free:15844kB min:128kB low:160kB high:192kB active_anon:0kB inactive_anon:0kB active_file:0kB inactive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:15308kB managed:15844kB mlocked:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? yes [52544.285177] lowmem_reserve[]: 0 3359 7870 7870 [52544.285188] Node 0 DMA32 free:502696kB min:28796kB low:35992kB high:43192kB active_anon:110992kB inactive_anon:2412kB active_file:541116kB inactive_file:436276kB unevictable:1340kB isolated(anon):0kB isolated(file):0kB present:3440584kB managed:3413984kB mlocked:1340kB dirty:36kB writeback:0kB mapped:10388kB shmem:2640kB slab_reclaimable:1818528kB slab_unreclaimable:1892kB kernel_stack:352kB pagetables:1988kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimable? no [52544.285207] lowmem_reserve[]: 0 0 4510 4510 [52544.285217] Node 0 Normal free:51404kB min:38656kB low:48320kB high:57984kB active_anon:1190364kB inactive_anon:211744kB active_file:1042948kB inactive_file:1069728kB unevictable:7704kB isolated(anon):0kB isolated(file):0kB present:4618656kB managed:4559244kB mlocked:7704kB dirty:532kB writeback:0kB mapped:75612kB shmem:214052kB slab_reclaimable:825532kB slab_unreclaimable:39588kB kernel_stack:2600kB pagetables:31452kB unstable:0kB bounce:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:32 all_unreclaimable? no [52544.285234] lowmem_reserve[]: 0 0 0 0 [52544.285244] Node 0 DMA: 1*4kB (U) 0*8kB 0*16kB 1*32kB (U) 3*64kB (U) 2*128kB (U) 0*256kB 0*512kB 1*1024kB (U) 1*2048kB (R) 3*4096kB (M) = 15844kB [52544.285283] Node 0 DMA32: 29021*4kB (UEMR) 22970*8kB (UEMR) 12419*16kB (UEMR) 102*32kB (UEMR) 18*64kB (UEM) 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 502964kB [52544.285317] Node 0 Normal: 12354*4kB (UEM) 275*8kB (UEM) 5*16kB (UEM) 4*32kB (UEM) 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 51824kB [52544.285350] 827517 total pagecache pages [52544.285355] 0 pages in swap cache [52544.285361] Swap cache stats: add 0, delete 0, find 0/0 [52544.285365] Free swap = 0kB [52544.285369] Total swap = 0kB [52544.367333] 2090480 pages RAM [52544.367340] 91490 pages reserved [52544.367345] 2452953 pages shared [52544.367350] 1171799 pages non-shared [52544.371026] sd 6:0:0:0: [sdb] No Caching mode page present [52544.371036] sd 6:0:0:0: [sdb] Assuming drive cache: write through [52544.371042] sd 6:0:0:0: [sdb] Attached SCSI disk [1] [root@bento cups]# gdisk -l /dev/sdb GPT fdisk (gdisk) version 0.8.6 Partition table scan: MBR: protective BSD: not present APM: not present GPT: present Found valid GPT with protective MBR; using GPT. Disk /dev/sdb: 1953525168 sectors, 931.5 GiB Logical sector size: 512 bytes Disk identifier (GUID): 2E559C3A-84AE-4A21-B658-0B286B9A72AF Partition table holds up to 128 entries First usable sector is 34, last usable sector is 1953525134 Partitions will be aligned on 8-sector boundaries Total free space is 262157 sectors (128.0 MiB) Number Start (sector) End (sector) Size Code Name 1 40 409639 200.0 MiB EF00 EFI System Partition 2 409640 977172223 465.8 GiB AF05 mac 3 977172224 977434367 128.0 MiB AB00 Booter 0x43773a38 4 977434368 1953262983 465.3 GiB AF00 linux [root@bento cups]# -- PGP key: 7ED9 F7D3 6B10 81D7 0EC5 5C09 D7DC C8E4 3187 7DF0