I want to add some nuance to my SD card recommendation. I suggest specifically getting a 64GB or larger SanDisk (I’m assuming SD2IEC supports above 32GB) and with the A2 marking. A2 indicates a higher IOPS rating (intended for Android device that are running applications from microSD) and in my own testing the 64GB and larger cards have better random write performance than 32GB or smaller. Justin > On Jan 31, 2021, at 18:54, Raj Wurttemberg <rajaw_at_c64.us> wrote: > > Yes, the HD-100 does use a standard 3.5” drive with a 10 cm actual width, but the SCSI2SD is only 9 cm across. Also, the SCSI2SD doesn’t have any side mounting holes. > > It’s been a looooong time since I had my HD-100 assembled but I recall that there was some weird arrangement of spacers to mount the SCSI HD. Unfortunately I don’t have a 3D printer. > I do see that they do sell a 3.5” adapter on the Inertial Computing site… maybe that coupled with some spacers could do the trick. > > /Raj > > From: Justin <shadow_at_darksideresearch.com> > Sent: Sunday, January 31, 2021 6:41 PM > To: cbm-hackers_at_musoftware.de hackers <cbm-hackers@musoftware.de> > Subject: Re: CMD HD mechanism failure? > > There are all kinds of 3d printable brackets you can use to mount them in standard drive bays. Doesn’t the CMD-HD use a standard 3.5” drive? IIRC I mounted mine in a 5.25” slot behind a drive bezel for a Zip drive in my 9600 so that I could access the SD card slot without cracking the case. > > Justin > > > On Jan 31, 2021, at 16:54, Raj Wurttemberg <rajaw_at_c64.us <mailto:rajaw@c64.us>> wrote: > > Now if I could only find a mount for the SCSI2SD card in the CMD HD-100. The CMD HD-100 is only 5 inches (12.5 cm) across. > > /Raj > > From: Justin Cordesman <shadow_at_darksideresearch.com <mailto:shadow@darksideresearch.com>> > Sent: Saturday, January 30, 2021 6:00 PM > To: cbm-hackers_at_musoftware.de <mailto:cbm-hackers@musoftware.de> > Subject: Re: CMD HD mechanism failure? > > Two things: > > 1. Try turning the drive upside down if you need to recover anything from it. Sometimes if they are having trouble getting to target speed switching the load to the top bearing gets you there. > > 2. https://store.inertialcomputing.com/SCSI2SD-s/100.htm <https://store.inertialcomputing.com/SCSI2SD-s/100.htm> > > I use one on my Powermac 9600 since it sits on the edge with the last support for the 400k floppies but has modern Ethernet support. There are newer ones since mine with higher performance. Use good media, genuine sandisk extreme or the like (there are a LOT of forgeries of SD and microSD media so shop carefully). Write endurance and I/O performance, especially random writes, is very different as you go up the quality scale. > > Justin --Apple-Mail=_F61B9FBE-76B9-4247-BD67-273281FA9B31 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=utf-8 <html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">I want to add some nuance to my SD card recommendation. I suggest specifically getting a 64GB or larger SanDisk (I’m assuming SD2IEC supports above 32GB) and with the A2 marking. A2 indicates a higher IOPS rating (intended for Android device that are running applications from microSD) and in my own testing the 64GB and larger cards have better random write performance than 32GB or smaller.<div class=""><br class=""><div class=""> <div>Justin</div> </div> <div><br class=""><blockquote type="cite" class=""><div class="">On Jan 31, 2021, at 18:54, Raj Wurttemberg <<a href="mailto:rajaw_at_c64.us" class="">rajaw_at_c64.us</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta charset="UTF-8" class=""><div class="WordSection1" style="page: WordSection1; caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;"><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Yes, the HD-100 does use a standard 3.5” drive with a 10 cm actual width, but the SCSI2SD is only 9 cm across. Also, the SCSI2SD doesn’t have any side mounting holes.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">It’s been a looooong time since I had my HD-100 assembled but I recall that there was some weird arrangement of spacers to mount the SCSI HD. Unfortunately I don’t have a 3D printer.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">I do see that they do sell a 3.5” adapter on the Inertial Computing site… maybe that coupled with some spacers could do the trick.<o:p class=""></o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">/Raj<o:p class=""></o:p></div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="border-style: none none none solid; border-left-width: 1.5pt; border-left-color: blue; padding: 0in 0in 0in 4pt;" class=""><div class=""><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Justin <<a href="mailto:shadow_at_darksideresearch.com" class="">shadow_at_darksideresearch.com</a>><span class="Apple-converted-space"> </span><br class=""><b class="">Sent:</b><span class="Apple-converted-space"> </span>Sunday, January 31, 2021 6:41 PM<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span><a href="mailto:cbm-hackers@musoftware.de" class="">cbm-hackers@musoftware.de</a> hackers <<a href="mailto:cbm-hackers@musoftware.de" class="">cbm-hackers@musoftware.de</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span>Re: CMD HD mechanism failure?<o:p class=""></o:p></div></div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">There are all kinds of 3d printable brackets you can use to mount them in standard drive bays. Doesn’t the CMD-HD use a standard 3.5” drive? IIRC I mounted mine in a 5.25” slot behind a drive bezel for a Zip drive in my 9600 so that I could access the SD card slot without cracking the case.<o:p class=""></o:p></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Justin<o:p class=""></o:p></div></div></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><br class=""><br class=""><o:p class=""></o:p></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;" class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">On Jan 31, 2021, at 16:54, Raj Wurttemberg <<a href="mailto:rajaw_at_c64.us" style="color: blue; text-decoration: underline;" class="">rajaw_at_c64.us</a>> wrote:<o:p class=""></o:p></div></div><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""> </o:p></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Now if I could only find a mount for the SCSI2SD card in the CMD HD-100. The CMD HD-100 is only 5 inches (12.5 cm) across.<span class="apple-converted-space"> </span><o:p class=""></o:p></div></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">/Raj<o:p class=""></o:p></div></div></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div style="border-style: none none none solid; border-left-width: 1.5pt; border-left-color: blue; padding: 0in 0in 0in 4pt;" class=""><div class=""><div style="border-style: solid none none; border-top-width: 1pt; border-top-color: rgb(225, 225, 225); padding: 3pt 0in 0in;" class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""><b class="">From:</b><span class="apple-converted-space"> </span>Justin Cordesman <<a href="mailto:shadow_at_darksideresearch.com" style="color: blue; text-decoration: underline;" class="">shadow_at_darksideresearch.com</a>><span class="apple-converted-space"> </span><br class=""><b class="">Sent:</b><span class="apple-converted-space"> </span>Saturday, January 30, 2021 6:00 PM<br class=""><b class="">To:</b><span class="apple-converted-space"> </span><a href="mailto:cbm-hackers_at_musoftware.de" style="color: blue; text-decoration: underline;" class="">cbm-hackers@musoftware.de</a><br class=""><b class="">Subject:</b><span class="apple-converted-space"> </span>Re: CMD HD mechanism failure?<o:p class=""></o:p></div></div></div></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Two things:<o:p class=""></o:p></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">1. Try turning the drive upside down if you need to recover anything from it. Sometimes if they are having trouble getting to target speed switching the load to the top bearing gets you there.<o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">2. <a href="https://store.inertialcomputing.com/SCSI2SD-s/100.htm" style="color: blue; text-decoration: underline;" class="">https://store.inertialcomputing.com/SCSI2SD-s/100.htm</a><o:p class=""></o:p></div></div></div><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></div></div></div><div class=""><p class="MsoNormal" style="margin: 0in 0in 12pt; font-size: 11pt; font-family: Calibri, sans-serif;">I use one on my Powermac 9600 since it sits on the edge with the last support for the 400k floppies but has modern Ethernet support. There are newer ones since mine with higher performance. Use good media, genuine sandisk extreme or the like (there are a LOT of forgeries of SD and microSD media so shop carefully). Write endurance and I/O performance, especially random writes, is very different as you go up the quality scale.<o:p class=""></o:p></p><div class=""><div class=""><div style="margin: 0in; font-size: 11pt; font-family: Calibri, sans-serif;" class="">Justin</div></div></div></div></div></div></blockquote></div></div></div></div></div></blockquote></div><br class=""></div></body></html> --Apple-Mail=_F61B9FBE-76B9-4247-BD67-273281FA9B31--Received on 2021-02-01 04:00:03
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