On Mon, Mar 9, 2020 at 7:55 AM Andrew Lunn <andrew at lunn.ch> wrote: > Yes i had this problem. And a BIOS update did help. > good to know. but this bios iso seems pretty mysterious to me, i downloaded it a second time, they compare equal, neither memdisk nor the bios boot it, and ls doesn't even show anything, tho dir and type did (see OP). $ wget https://download.lenovo.com/pccbbs/mobiles/j9uj28wd.iso --2020-03-09 10:38:05-- https://download.lenovo.com/pccbbs/mobiles/j9uj28wd.iso Resolving download.lenovo.com (download.lenovo.com)... 23.13.226.129 Connecting to download.lenovo.com (download.lenovo.com)|23.13.226.129|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 17149952 (16M) [application/octet-stream] Saving to: ?j9uj28wd.iso? j9uj28wd.iso 100%[=======...=======>] 16.36M 2.94MB/s in 5.2s 2020-03-09 10:38:12 (3.15 MB/s) - ?j9uj28wd.iso? saved [17149952/17149952] $ l *so -rw-rw-r-- 1 g greg 17149952 2018-06-26 Tue 01:52:45 e540firmwarej9uj28wd.iso -rw-rw-r-- 1 g greg 17149952 2018-06-26 Tue 01:52:45 j9uj28wd.iso * 0$ cmp *so 0$ dd if=e540firmwarej9uj28wd.iso of=/dev/sdb > seems to have written properly. both the iso itself, and /dev/sdb, appear to be an iso9660 filesystem, both mount without error, but ls shows no contents: # dd if=e540firmwarej9uj28wd.iso of=/dev/sdb 33496+0 records in 33496+0 records out 17149952 bytes (17 MB, 16 MiB) copied, 5.95615 s, 2.9 MB/s 0# mkdir /mnt/{i,j} 0# mount j9uj28wd.iso /mnt/i mount: /mnt/i: WARNING: device write-protected, mounted read-only. 0# mount /dev/sdb /mnt/j mount: /mnt/j: WARNING: device write-protected, mounted read-only. 0# dfm Filesystem Type 1M-blocks Used Available Use% Mounted on /dev/sda1 ext4 937872 8855 881308 1% / /dev/loop18 iso9660 17 17 0 100% /mnt/i /dev/sdb iso9660 17 17 0 100% /mnt/j 0# ls -la /mnt/? /mnt/i: total 6 dr-xr-xr-x 1 root root 2048 Jun 19 2018 . drwxr-xr-x 4 root root 4096 Mar 9 10:53 .. /mnt/j: total 6 dr-xr-xr-x 1 root root 2048 Jun 19 2018 . drwxr-xr-x 4 root root 4096 Mar 9 10:53 .. 0# and then see if it will boot. > > FYI: This laptop has a small M2 slot you can insert an SSD into. The > official Lenovo documentation says an SSD placed into this slot should > only be used for Microsofts way of caching the spinning rust HD, not > as an independent disk. But it works fine as a standalone disk. I've > had my root filesystem on it all the time i've had the machine. And it > gives a significant performance boost. when i select USB HDD and hit enter, the screen goes blank for a half second, shows no message, and simply shows the boot menu again: Boot Menu ========= ATAPI CD0: MATSHITADVD-RAM UJ8E2 ATA HDD0: SAMSUNG HN-M101MBB USB HDD: Generic Flash Disk PCI LAN: Realtek PXE B03 D00 i'm clueless... -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20200309/4c526152/attachment-0001.htm>