The internal hard drive was visible to Grub, as was the other external USB hard drive, a Western Digital drive. Having an external hard drive connected with USB is not the problem. Grub was on /dev/sda and used to boot the Western Digital drive just fine, until Grub was reconfigured to boot the Toshiba hard drive instead.
name=Matthew%20Campbell&email=trenix25%40pm.me -------- Original Message -------- On Jun 13, 2020, 4:00 PM, The Wanderer wrote: > On 2020-06-13 at 18:44, David Christensen wrote: [that on 2020-06-13 at > 15:38, Matthew Campbell wrote:] >> /dev/sda: Toshiba MK1234GS, 111.8 GiB > (Internal) >> /dev/sr0: MATSHITADVD-RAM UJ-850S , DVD R/W (Internal IDE) >> > /dev/sdb: Toshiba External USB 3.0 3.7 TiB >> /dev/sdc: PNY 32 USB 2.0 FD > 28.9 GiB If I'm reading things correctly, this "Toshiba External USB 3.0" - > labeled here as /dev/sdb - is the drive which is at the core of the reported > problem. I'm wondering whether the fact that it's an external hard drive, > connected over USB3, might be relevant to the fact that GRUB and the BIOS are > not detecting it. There are systems out there which have some of their USB > ports hanging off of an internal USB hub chip, such that in order for the > ports to be visible to the rest of the system, a driver for that hub is > needed. If GRUB etc. doesn't have a compatible driver for that hub, the USB > port to which this external drive is connected might not even be detected in > the first place. >> All USB ports are USB 2.0. That's *probably* not a > problem relative to the fact that this is a USB3 external hard drive, but it > certainly can't be helping. > I like to use the manufacturer diagnostic > utility to wipe and test > hard drives: > > > https://storage.toshiba.com/consumer-hdd/support/product > > Entering > "MK1234GS" and "MK1234GSXIDE" into the edit box makes me > think your HDD is > no longer supported. But, there are many FOSS > tools that you can use > instead. Unless I'm mixing up my reading of the information posted thus far, > this is the internal hard drive, /dev/sda, which has Windows - not the > /dev/sdb which has Linux. As such, I don't see how it's relevant to the fact > that the latter is not visible to GRUB. -- The Wanderer The reasonable man > adapts himself to the world; the unreasonable one persists in trying to adapt > the world to himself. Therefore all progress depends on the unreasonable man. > -- George Bernard Shaw
